Everyday Calculators

Use these calculators for daily life. Date & Time covers age, days between dates, time zone, countdown, and stopwatch. Cooking includes recipe scaling, kitchen converter, and coffee ratio. Random & Generators offers random number, coin flip, dice, password, and more. Quick & Handy has tip calculator, tally counter, shoe size, GPA, and grade. Search or pick a category below to start.

Tools by category

Tally Counter

Count people, score, or clicks. Use ＋ to add, － to subtract. Keyboard: space or ＋ key to add, － to subtract. Value is saved in your browser.

0

Tip Calculator

Split bills and calculate tips

Bill Amount ($)

Tip (%)

Number of People

Bill vs Tip

GPA Calculator

Weighted GPA from course grades and credit hours

Course	Grade	Credits

Grade Calculator

Weighted final grade from assignments

Assignment	Score	Max Score	Weight (%)

BMI & BMR Calculator

Body Mass Index and Basal Metabolic Rate: one form, both results. Choose metric or imperial for weight and height below.

MetricImperial

Gender

Age (years)

Weight (lb)

Height (in)

Body fat % (optional)

BMR (Mifflin-St Jeor)

Body composition

Formulas: BMI = weight(kg)/height(m)²; BMR (Mifflin-St Jeor): male 10×wt+6.25×ht−5×age+5, female …−161

Body Surface Area (BSA)

Height & weight → body surface area using Mosteller, Du Bois, and Haycock formulas.

MetricImperial

Weight (lb)

Height (in)

Calorie / TDEE Calculator

Total Daily Energy Expenditure and calories burned per activity

MetricImperial

Gender

Age (years)

Weight (lb)

Height (in)

Activity Level

Calories burned (single activity)

Activity (MET)

Duration (min)

Weight (lb)

Ideal Weight Calculator

Four established formulas (Devine, Robinson, Miller, Hamwi)

MetricImperial

Gender

Height (in)

Height Calculator (Adult Height Predictor)

Estimate child's adult height from current height and age (Khamis-Roche method or mid‑parental)

MetricImperial

Child's current height (in)

Child's age (years)

Sex

Mother's height (in, optional)

Father's height (in, optional)

Body Fat % Calculator

Tape-method body fat using Navy / Army formulas with fitness and branch categories.

MetricImperial

Gender

Age (years, for Army)

Method

Height (in)

Waist (in)

Neck (in)

Macro Calculator (Ideal Macros for Goal)

Protein, carbs & fat targets from your TDEE and diet goal

MetricImperial

Daily Calories / TDEE (kcal)

Body weight (lb), optional

Goal

Diet Type

Protein Calculator

Daily protein target from bodyweight and goal (rough guideline only)

MetricImperial

Body weight (lb)

Goal

Meals per day (optional)

Water Intake

Daily water recommendation by weight and activity

MetricImperial

Weight (lb)

Activity

Waist-to-Hip

Waist / hip → ratio and category

MetricImperial

Waist (in)

Hip (in)

Sex

Waist-to-Height

Waist / height → ratio and cardio‑metabolic risk band

MetricImperial

Height (in)

Waist (in)

Sex

GFR Calculator (Kidney Function)

Estimated glomerular filtration rate (eGFR): CKD-EPI formula. For reference only; not a diagnosis.

Creatinine (mg/dL)

Age (years)

Sex

Formula: CKD-EPI: eGFR = 141 × min(SCr/κ,1)^α × max(SCr/κ,1)^(−1.209) × 0.993^age

Calories Burned Calculator

MET × weight × time → calories (approximate)

MetricImperial

Activity (MET)

Weight (lb)

Duration (minutes)

Pace Calculator

Running pace, distance & time. Enter any two to find the third

MetricImperial

Kilometers Miles

Distance (km)

Time: Hours

Time: Minutes

Time: Seconds

Pace (min/km): Min

Pace: Sec

Race Time Predictor

Predict marathon / half-marathon time from a recent race (Riegel formula)

Known race

Time (H:MM:SS)

Predict

VO₂ Max Calculator

Estimate aerobic capacity from max and resting heart rate

Age

Max HR (bpm)

Resting HR (bpm)

Target Heart Rate

Age-based zones (e.g. 50–85% max)

Age

Resting HR (optional)

Training Pace Calculator

From a recent race time: easy, tempo, interval, long run

Reference race

Race time (H:MM:SS)

One Rep Max (1RM)

Estimate 1RM from weight and reps (Epley formula)

Weight Lifted (lb or kg)

Reps

Unit

Formula: Epley: 1RM ≈ weight × (1 + reps/30)

Strength Standards Calculator

Compare your lifts to beginner / intermediate / advanced (ratio to bodyweight)

MetricImperial

Bodyweight (lb)

Squat (kg)

Bench (kg)

Deadlift (kg)

Wilks / Powerlifting Score

Total (squat + bench + deadlift) adjusted for bodyweight

MetricImperial

Bodyweight (lb)

Sex

Squat (kg)

Bench (kg)

Deadlift (kg)

Training Volume Calculator

Total weight lifted = sum of (weight × reps) per set

Sets (weight × reps, one per line)

Example: 100×5 means 100 kg × 5 reps. Use space or × between weight and reps.

Cycling Speed Calculator

Distance + time → average speed

Distance (km)

Time (H:MM or minutes)

Cycling Power (Watts)

Estimate power from weight, speed, and gradient

Total mass (rider+bike, kg)

Speed (km/h)

Gradient (%)

Bike Gear Ratio

Chainring × cassette → ratio and speed at cadence

Chainring (teeth)

Cassette (teeth)

Wheel diameter (mm)

Cadence (rpm)

Swimming Pace Calculator

Time and distance → pace per 100 m or 100 yd

Unit

Distance (m or yd)

Time (MM:SS)

Rowing Split Calculator

Time for 500 m from total time and distance, or enter 500 m time

Distance (m)

Time (MM:SS)

Steps to Calories Calculator

Steps, step length, and weight → distance and approximate calories burned (walking)

MetricImperial

Steps

Step length

Step length unit

Body weight (lb)

Vertical Jump Calculator

Jump height → standing reach needed to touch rim / dunk

Vertical jump (in)

Rim height (ft)

40-Yard Dash Speed Calculator

Time for 40 yards → speed in mph and km/h

40 yd time (seconds)

Ideal Marathon Time Predictor

Enter a recent race to predict marathon time (Riegel)

Known race

Race time (H:MM:SS)

Sleep Cycle

Wake time → suggested bedtimes (90‑min cycles)

Wake at (time)

Cycles (4–6)

Caffeine Intake Calculator

Estimate daily caffeine intake and compare with common guidance limits.

MetricImperial

Coffee cups (95 mg each)

Espresso shots (63 mg each)

Tea cups (47 mg each)

Energy drinks (80 mg each)

Soda cans (35 mg each)

Body weight (lb), optional

Blood Alcohol (BAC)

Weight, sex, drinks, time → rough BAC estimate

MetricImperial

Weight (lb)

Sex

Standard drinks

Hours since first drink

Blood Pressure

Systolic / diastolic → category based on ACC/AHA guidelines.

Systolic (mmHg)

Diastolic (mmHg)

A1c & Average Glucose

Convert between A1c (%) and estimated average glucose (eAG).

A1c (%)

Average glucose (mg/dL)

Cholesterol Ratios

Total, HDL, LDL, triglycerides → common lipid ratios and rough interpretation.

Total cholesterol (mg/dL)

HDL (mg/dL)

LDL (mg/dL)

Triglycerides (mg/dL)

Dosage

mg/kg, weight → dose (mg); optional unit

MetricImperial

Dose (mg per kg)

Body weight (lb)

Life Expectancy

Very rough estimate of remaining years based on age, sex, smoking, and lifestyle (for fun only, not medical advice)

Age (years)

Sex at birth

Smoking status

Activity level

Diet / weight

Due Date Calculator

Naegele's rule (LMP) and IVF Day-3 / Day-5 transfer methods

Last Menstrual Period IVF Day-3 Transfer IVF Day-5 Transfer

LMP Date

As of Date (optional)

Pregnancy Tracker

Gestational age, trimester, EDD, and week-by-week milestones

Last Menstrual Period (LMP) Conception Date

LMP Date

As of Date

Conception Window & Ovulation

From due date → fertile window; or from last period → ovulation & next period

From due date (EDD) From last period (LMP)

Due Date (EDD)

Cycle Length (days)

Pregnancy Weight Gain

IOM 2009 guidelines by pre-pregnancy BMI: single and twin pregnancies

Pre-Pregnancy Weight (lbs)

Height (ft)

Height (in)

Pregnancy Type

Current Week (optional)

Age Calculator

Exact age, workdays lived, next milestone birthday, and more

Date of Birth

As of Date

Days Between Dates

Days, weeks, months, and years between two dates

Start Date

End Date

Compare Using

End DateDays Until

Time Zone Converter (Meeting Planner)

Convert a date/time between UTC offsets. Use Meeting Planner to see one time in multiple zones side‑by‑side.

Date & Time (local)

From UTC offset (hours)

To UTC offset (hours)

Result

—

World Time: current time

Your time—

New York—

London—

Paris—

Tokyo—

Sydney—

Meeting Planner: same time in multiple zones

Meeting date & time

Meeting time is in (UTC offset)

Countdown Timer

Set a target date and time; see time remaining (updates every second)

Target Date & Time

—

Stopwatch

Elapsed time with Start, Pause, Reset. Name a session and log it to track productivity.

Session name (optional)

00:00:00.0

Business Days Calculator

Count business days between two dates or compute end date from business days (excludes weekends and optional holidays).

Start Date

Mode

Calculate # Business DaysCalculate End Date from Business Days

End Date

Holidays to skip (optional)

Military Time Converter

Convert between 24‑hour and 12‑hour (AM/PM) time formats.

24‑hour time

12‑hour time

AM / PM

Time Calculator

Add or subtract hours, minutes, and seconds

Time 1 (HH:MM:SS)

Operation

Time 2 (HH:MM:SS)

Hours Calculator

Time card, shift schedule, and break summary. Calculate hours worked and weekly pay.

Day

Shift (optional)

Start Time

End Time

Break (min)

Hourly Rate ($) (optional)

Required break (min after 6h)

Overtime Calculator

Quick answer

Enter daily in/out times and breaks to total hours, then apply your overtime rules to see premium pay — exemptions and state laws differ.

For a related estimate, see After Tax Income Calculator.

Explore further: Hourly To Salary · Income Tax Calculator

Typical structure

Weekly overtime (U.S. common case): hours beyond 40 may be paid at 1.5× regular rate for non-exempt roles — not universal.

Explore further: Net Income Calculator · Overtime Pay Calculator

Overtime is usually straight time beyond a threshold, paid at a premium (often 1.5×). This calculator helps you total hours and approximate gross overtime dollars from your base rate.

How to use this calculator

Track daily hours: Include meal breaks you actually take — rounding policies differ by employer.
Apply the correct multiplier: Some roles use double-time on Sundays or after 12 hours — customize to your policy.
Compare to a pay stub: Use one heavy OT week to validate your assumptions.

Real-world examples

Example: busy week: 44 hours at $30 base with 1.5× after 40 → 40×30 + 4×45 = $1,200 + $180 = $1,380 gross (illustrative).
Sensitivity check: Nudge the rate by about +0.5% and the principal by about −5%. If the payment or total interest moves enough to change your decision, you are still on a steep part of the curve where small inputs matter.

Explore further: Paycheck Calculator

What to watch

If effective hourly pay including OT still trails market, you may be trading health and time — benchmark carefully.

FAQ

Is overtime always 1.5× after 40 hours in a week?

That's the common U.S. non-exempt default, but it isn't universal — some roles are exempt, and some jurisdictions add daily overtime or double-time rules. Check your state and employer policy before relying on the 1.5× assumption.

Are results tax or legal advice?

No. They are educational estimates from your inputs. Payroll rules vary by employer, state, and year.

Why does my paycheck differ from a simple annual ÷ pay periods?

Pre-tax deductions, benefits, local taxes, and rounding can change net pay even when gross looks predictable.

Sunrise / Sunset Calculator

Sunrise and sunset times for a date and location (latitude/longitude)

Date

Latitude (°)

Longitude (°)

Timezone

Moon Phase Calculator

Moon phase, illumination %, and age in days for any date

Date

Random Number Generator

Generate random integers or decimals

Min

Max

Count

Type

Integer Decimal (2 places)

No Duplicates

No Yes

Generated Numbers

Password Generator

Generate secure, random passwords

Coin Flip

Flip a virtual coin: Heads or Tails

Flips

Dice Roller

Roll one or more dice (d4, d6, d8, d10, d12, d20)

Dice

Rolls

Random Name Generator

Generate random first names, last names, or full names

Type

Count

Random Card Generator

Draw one or more random playing cards

Count

No duplicates

Yes No

Spin the Wheel

Enter options (one per line), then spin to pick one at random

Options (one per line)

Random Letter Generator

Generate random letters (A–Z or a–z)

Case

Count

Random Color Generator

Generate random colors (HEX, RGB) with optional copy

Count

Random Date Generator

Generate random dates within a range

From

To

Count

Random Country / City

Pick a random country or major city

Type

Count

Recipe Scaling

Scale ingredient amounts when changing servings or pan size

Original servings

New servings

Original pan area (optional)

New pan area (optional)

Use square inches or cm² (e.g. 8×8 in pan → 64 in², 9 in round → ~64 in²).

Ingredients (one per line)

Grocery / Food Budget

% of income on food or set a monthly food budget

Mode

Monthly income ($)

Food % or monthly $

Household size (optional)

Egg Boiling Calculator

How long to boil eggs for soft, medium, or hard yolks. Optional: starting temp, altitude or pressure, or boiling point.

Doneness

Egg size

Starting temp (°C)

Altitude (ft, optional)

Air pressure (kPa, optional)

Boiling point (°C, optional)

Butter Calculator

Convert between sticks, cups, tablespoons, and grams (US butter: 1 stick = ½ cup = 8 tbsp ≈ 113 g).

Amount

From unit

To unit

Cake Pan Converter

Adjust baking for a different pan size: enter dimensions or area of original and new pan to get the scale factor.

Original shape

Original size (in)

New shape

New size (in)

Yeast Converter

Convert between active dry, instant, fresh (cake), compressed, and brewers' yeast. Typical ratio: 1 active dry ≈ 1 instant ≈ 2.5 fresh/compressed.

Amount

From type

To type

Kitchen Converter

Convert between cups, grams, spoons, and more, using ingredient-specific densities.

Ingredient

Amount

From unit

To unit

Coffee Ratio Calculator

Coffee : water ratio (e.g. 1:15, 1:17). Enter one of coffee or water to get the other

Ratio (coffee : water)

Coffee (g)

Water (g or ml)

Steak Cook Time

Grilling or pan-searing time by thickness and doneness. Internal temp targets included.

Method

Doneness

Thickness

Healthy Coffee

See how your coffee habits stack up: cups, bean/roast, brewing, and add-ons.

Cups per day

Bean / roast

Brewing

Milk/creamer?

Sugar/syrup?

Coffee Kick

Rough caffeine and timing: sleep, wake time, and planned drinks.

Sleep last night

Planned cups today

Mg per cup (approx)

Coffee Footprint

Estimate CO₂ and water impact of your coffee consumption.

Cups per day

Type

Per

Sourdough Calculator

Baker's percentage: flour 100%, water, starter, and salt. Get ingredient weights.

Flour (g)

Hydration (%)

Starter (%)

Salt (%)

How Much Rice per Person

Estimate dry rice and water needed based on servings, meal type, and appetite.

Number of people

Serving style

Appetite

Rice type

Rice & Pasta Planner

How much dry rice or pasta and water do you need for a crowd?

Mode

Rice type

Servings

Turkey Cooking Time

Estimate roast duration and thawing time from turkey weight.

Turkey weight

Weight unit

Turkey type

Party Food & Drink Planner

Estimate how much food and drink to buy for your event.

Adults

Kids

Event length (hours)

Drinking level

Food style

Wedding Alcohol Calculator

Estimate bottles of wine, beer, champagne, and vodka for your reception.

Wine drinkers

Beer drinkers

Reception hours

Champagne (toast) guests

Champagne type

Vodka drinkers

Salad Calories

Estimate calories from common salad ingredients and servings.

Lettuce (cups)

Tomatoes (medium)

Cucumber (cups)

Chicken (oz)

Cheese (oz)

Dressing

Pizza Dough Calculator

Scale pizza dough ingredients by dough ball count, weight, and baker's percentages.

Dough balls

Weight per ball (g)

Hydration (%)

Salt (%)

Instant yeast (%)

Sourdough Hydration Calculator

Calculate flour and water from target hydration, starter amount, and starter hydration.

Total flour target (g)

Target hydration (%)

Salt (%)

Starter amount (g)

Starter hydration (%)

Shoe Size Converter

Convert between US Men, EU, and UK sizes

Size

From

To

Result

—

Clothing Size Converter

Convert between US, EU, and UK clothing sizes

Size

From

To

Result

—

Dress Size from Measurements

Bust, waist, hips (in or cm) → US / EU / UK dress size

Unit

Bust (in or cm)

Waist (in or cm)

Hips (in or cm)

Ring Size Converter

Convert between US ring size and inner diameter (mm)

Value

From

US Inner diameter (mm)

To

Inner diameter (mm) US

Result

—

Bra Size Calculator

Band + bust measurement → US / UK cup and band size

Under bust / band (in)

Bust at fullest (in)

Baby Name Generator

Generate random baby names by style

Style

Count

Business Name Generator

Random business or brand name ideas

Count

Fantasy Name Generator

Generate names for characters, places, or creatures

Type

Count

Pet Name Generator

Cute and catchy names for dogs, cats, and other pets

Count

Random Username Generator

Generate unique usernames (adjective + noun + numbers)

Count

Include numbers

Yes No

Fake Credit Card Generator

Generate Luhn-valid test card numbers. For development/testing only; do not use for real payments.

Brand

Count

Trip Cost Calculator

Trip cost, fuel needed, or MPG from distance and fuel used. Use for drive planning and travel budgets.

Distance

Unit

Fuel used (optional)

Fuel used unit

Fuel efficiency (if no fuel used)

Efficiency unit

Fuel price ($/gal or $/L)

Commute Calculator

Compare monthly cost of driving vs public transport. Enter one or both to see which is cheaper.

Round-trip distance (mi/day)

Work days per week

Car: MPG

Gas price ($/gal)

Parking ($/month)

Tolls ($/month)

Transit: monthly pass ($)

Or single-trip cost ($) × trips/month

Trips per month (if single-trip)

Flight Time Calculator

Estimate flight duration from distance, cruise speed, and taxi/buffer time.

Distance

Distance unit

Cruise speed

Speed unit

Taxi / delay buffer (minutes)

Jet Lag Calculator

Estimate adaptation days from timezone shift and direction of travel.

Origin UTC offset

Destination UTC offset

Direction

Travel Packing Checklist

Generate a printable packing list by trip type and duration. Add your own items, then copy or print.

Trip type

Nights

Moving Checklist

Tasks and reminders for your move. Generate the list, add your own items, then copy or print.

Wedding Checklist

Plan your wedding with a step-by-step checklist. Add your own items, then copy or print.

Startup Launch Checklist

Launch your startup with a clear checklist. Add your own items, then copy or print.

Restaurant Opening Checklist

Open your restaurant with nothing missed. Generate the list, add items, then copy or print.

Home Buying Checklist

From pre-approval to closing. Generate the list, add your own items, then copy or print.

Distance Calculator

Distance between two points (2D, 3D, or latitude/longitude on Earth)

Mode

2D 3D Lat/Long

Point 1:

x₁

y₁

Point 2:

x₂

y₂

Distance

—

Formula: d = √((x₂−x₁)² + (y₂−y₁)²) [add +(z₂−z₁)² for 3D]

Alcohol Dilution Calculator

Dilute spirit to target ABV: how much water (or diluent) to add

Spirit volume (ml)

Spirit ABV (%)

Target ABV (%)

Hiking Time Estimator

Estimate hiking time using Naismith’s rule with options for pace and conditions

Distance

Unit

Total ascent

Ascent unit

Base pace (flat)

Pace unit

Terrain / conditions

Calories Burned Hiking

Estimate calories burned on a hike from distance, elevation, and body weight

MetricImperial

Distance

Unit

Total ascent

Ascent unit

Body weight (lb)

Trail difficulty

Water Requirement Calculator

Day‑hike or backpacking: estimate water needed from hours, heat, and exertion level

Hours active

Temperature

Temp unit

Intensity

People

Survival Water Calculator

Minimum daily water per person for survival scenarios (estimate only, not medical advice)

Days

People

Climate

Camp Cooking Calculator

Estimate food weight and stove fuel for camping trips

Days

People

Meals per day

Food per person per day (oz)

Stove fuel per person per day (oz)

Firewood Requirement Calculator

Estimate bundles or cubic feet of firewood needed for camping

Nights

Hours of fire per night

Burn rate (bundles per hour)

Backpack Weight Calculator

Total pack weight and % of body weight for backpacking or thru‑hikes

MetricImperial

Body weight (lb)

Base weight (gear, kg)

Food weight per day (kg)

Days of food

Water carried (L)

Elevation Gain Calculator

Convert between feet and meters and summarize total elevation gain per mile or km

Total ascent

Ascent unit

Distance

Distance unit

Pace Count Calculator

Estimate how many double‑steps (paces) you take per 100 m or 100 yd and convert distance ↔ pace count

Paces per 100 m

Distance to walk (km)

Observed paces

Hypothermia Risk Calculator

Approximate outdoor hypothermia risk category from air temp, wind, clothing, and wetness (informational only)

Air temperature (°F)

Wind speed (mph)

Clothing insulation

Wet?

Frost Risk Calculator

Garden / crop frost risk from forecast low, dew point, and exposure (simplified)

Forecast low (°F)

Dew point (°F)

Site exposure

Garden Soil Calculator

Estimate soil volume for raised beds and convert to cubic yards and bags.

Length (ft)

Width (ft)

Depth (in)

Bag size (cu ft)

Pool Volume Calculator

Calculate pool volume in gallons and liters for rectangular or round pools.

Shape

Average depth (ft)

Length (ft)

Width (ft)

Estimated Time of Arrival (ETA)

Distance and speed → travel time and arrival clock time

Distance

Distance unit

Speed

Speed unit

Departure time (optional)

Horizon Distance Calculator

Estimate distance to the horizon from eye height (spherical Earth approximation)

Observer height

Height unit

Hull Speed Calculator

Displacement hull speed from waterline length

Waterline length (ft)

Boat Speed Calculator

Speed made good from distance and elapsed time (nautical or statute)

Distance

Distance unit

Hours

True vs Apparent Wind Calculator

Boat speed and true wind → apparent wind speed and angle (simplified)

True wind speed (knots)

True wind angle (° relative to bow)

Boat speed (knots)

Course & Bearing Calculator

Compute course and distance between two coordinates (great‑circle approximation)

Start lat (°)

Start lon (°)

End lat (°)

End lon (°)

Distance unit

Signal Visibility Distance

Estimate how far away a light or signal can be seen from given heights

Observer height (m)

Signal height (m)

Coordinate Converter

Latitude/longitude: decimal degrees ↔ degrees / minutes / seconds (DMS).

Latitude (decimal °)

Longitude (decimal °)

Latitude (DMS)

Longitude (DMS)

Nautical Unit Converter

Quick conversions between nautical miles, knots, km, and mph

Value

From

Cocktail Finder

What drinks can you make with what you already have? Match your cabinet in seconds.

Select what you have on hand and instantly see cocktails you can make now or with one extra bottle/ingredient.

Select common sets:

Base Spirits

Liqueurs

Mixers / Juices

Sweeteners / Syrups

Bitters / Seasoning

Bubbles / Soda

Garnish / Herbs

Filter by tag:

0 drinks you can make now

0 one-ingredient away

You can make now

No full matches yet. Add a few more ingredients to unlock recipes.

1 ingredient away

No one-away cocktails with current filters.

Back to Cooking

0 selected

Cocktail Ratio Calculator

Scale cocktails by ratio parts for one drink or a full batch.

Servings

Drink size

Unit

Strong spirit parts

Sweet parts

Sour parts

Pomodoro Calculator & Timer

Plan sessions or run a live timer: work → short break → long break every N pomodoros.

Work (min per pomodoro)

Short break (min)

Long break (min)

Long break every N pomodoros

Number of pomodoros

Or: time available (hours)

Live timer

25:00

Work: start the timer

Audiobook Calculator

How many audiobooks in your commute or listening time

Listening time per day (min)

Days per week

Avg audiobook length (hours)

TV Series Duration Calculator

How long to watch a full show (episodes × length)

Number of episodes

Avg episode length (min)

Hours per day (optional)

Bath vs Shower Calculator

Compare water use and cost: shower (flow × minutes) vs bath (tub volume).

Shower flow rate (GPM)

Shower duration (min)

Bath tub volume (gal)

Water cost ($/1000 gal, optional)

Appliance Wattage Calculator

Estimate daily and monthly electricity use and cost from appliance watts and hours per day.

Appliance 1: watts

Hours/day

Appliance 2: watts

Hours/day

Appliance 3: watts

Hours/day

Electricity rate ($/kWh)

Carbon Footprint

Miles flown and car miles → rough CO₂ estimate

Miles flown (annual)

Car miles (annual)

Car efficiency (optional)

Love Calculator

Fun compatibility score based on two names (for entertainment only)

Your name

Their name

Golf Handicap Calculator

Course handicap from handicap index and slope rating (USGA-style)

Handicap Index

Slope Rating

Course Rating

Formula: Course Handicap = Index × (Slope/113) + (Course Rating − 72)

Wind Chill Calculator

Feels-like temperature from air temperature and wind speed (NWS formula)

Air temperature (°F)

Wind speed (mph)

Formula: NWS: 35.74 + 0.6215×T − 35.75×V^0.16 + 0.4275×T×V^0.16 (°F, mph)

Heat Index Calculator

Feels-like temperature from air temp and relative humidity (NWS)

Air temperature (°F)

Relative humidity (%)

Formula: Rothfusz regression (polynomial in temp °F and humidity %)

Dew Point Calculator

Dew point from temperature and relative humidity (Magnus formula)

Temperature (°F)

Relative humidity (%)

Formula: Magnus: γ = ln(RH/100) + (a×T)/(b+T); T_dp = (b×γ)/(a−γ); a=17.27, b=237.7

Tire Size Calculator

Sidewall height, revs per mile, and diameter from tire dimensions (e.g. 225/45R17)

Width (mm)

Aspect ratio (%)

Rim diameter (in)

Weird Units Converter

Turn everyday values into fun equivalents: distances, weights, areas, volumes, speeds, and temperatures.

Quantity

Value

Unit

Meeting Cost Calculator

Estimate the cost of a meeting from attendees, average hourly rate, and duration.

Number of attendees

Average hourly rate ($)

Duration (minutes)

Unit Price

Compare price per unit (e.g. $/oz, $/kg)

Price ($)

Quantity

Unit

Engine Horsepower Calculator

Estimate vehicle HP from weight and 1/4‑mile trap speed (elapsed time optional)

MetricImperial

Vehicle weight (lb)

Trap speed (mph, 1/4 mi)

Elapsed time (sec, optional)

Instagram Font Generator

Convert text to fancy Unicode styles, then copy and paste into Instagram, bios, and social posts

Your text

Style

Result

—

Hashtag Generator

Generate hashtags from topics or keywords (comma-separated)

Topics or keywords

—

Click to copy all

Bio Generator

Short Instagram-style bios. Pick a style and generate

Style

Optional: your name or keyword

—

Emoji Picker

Click an emoji to copy it

Tools by category

Overtime Calculator

Quick answer

Typical structure

How to use this calculator

Real-world examples

What to watch

FAQ

Base Spirits

Liqueurs

Mixers / Juices

Sweeteners / Syrups

Bitters / Seasoning

Bubbles / Soda

Garnish / Herbs

You can make now

1 ingredient away

A universe of useful calculators and tools

Free to use

Clean by design

Broad coverage

Always growing