Free online everyday tools calculators and tools. Browse and use all Everyday Tools tools on Calciverse.
Convert A1C to average glucose and understand diabetes targets.
Estimate blood alcohol content from drinks, weight, and time for safety.
Compute gear inches and ratio for cadence and climbing.
Categorize blood pressure readings and track over time.
Calculate BMI (body mass index) and BMR (basal metabolic rate). Health calculator on Calciverse.
Estimate body fat percentage from measurements or calipers for fitness tracking.
Estimate body surface area from height and weight for dosing and clinical use.
Track caffeine intake and half-life for sleep and energy timing.
Estimate daily calories and TDEE for weight loss, gain, or maintenance.
Estimate calories burned by activity and duration with METs.
Interpret total cholesterol, LDL, HDL, and ratios for heart health.
Estimate conception window and fertile days from cycle dates.
Estimate power from speed and slope or use for training zones.
Convert speed, cadence, and gear for cycling and indoor training.
Calculate medication dose by weight or body surface area when prescribed.
Estimate due date from LMP or conception for pregnancy planning.
Convert 40-yard time to speed and compare to benchmarks.
Estimate kidney function (eGFR) from creatinine, age, and sex. CKD-EPI equation. Screening only.
Find target heart rate zones by age for cardio and fat burn.
Predict adult height from current height and age for kids and teens.
See healthy weight ranges by height, frame, and formula for goal setting.
Explore life expectancy by age, gender, and lifestyle factors.
Split daily calories into carbs, protein, and fat for diet and muscle goals.
Predict marathon time from a half or 10K for pacing.
Estimate 1RM from a submax lift for programming and strength tracking.
Convert pace and speed for running: min/mile, min/km, and finish time.
Track pregnancy week and trimester with key milestones.
Healthy pregnancy weight gain by pre-pregnancy BMI and trimester.
Hit daily protein targets by weight and activity level for muscle and recovery.
Predict race times from a recent result or target pace.
Convert split time and pace for erg and on-water rowing.
Plan wake times around sleep cycles for feeling rested.
Convert steps to miles/km and estimated calories burned.
See how your lifts compare by bodyweight and experience.
Pace per 100 m/yd and split times for pool and open water.
Get easy, tempo, and interval paces from a recent race or goal.
Track sets, reps, and volume load for progressive overload.
Estimate power and compare vertical jump to norms.
Estimate VO2 max from a run test or resting heart rate for fitness level.
Check waist-to-height ratio for metabolic and heart health insight.
Compute waist-to-hip ratio and health category from measurements.
Daily water recommendation by weight and activity for hydration.
Compare powerlifting totals across bodyweights with Wilks and IPF points.