Weight / Mass Converter
Quick answer
Convert mass by multiplying by the ratio between units (e.g., lb to kg uses the same factor everywhere).
For a related estimate, see Length Converter.
Explore further: Temperature Converter · Time Unit Converter
Core logic
kg = lb × 0.45359237 · g = oz × 28.349523125 (avoirdupois). Stick to one ounce definition when comparing.
Explore further: Area Unit Converter · Volume Unit Converter
Mass conversions use fixed ratios between kilograms, pounds, ounces, and related units. Use it for shipping weights, recipes scaled by mass, and gym or lab measurements.
How to use this calculator
- Set inputs: Enter mass in the unit you have.
- Pick units: Switch display to the unit you need.
- Verify: Round only at the end for reporting.
Real-world examples
- Example: 5 lb × 0.453592 ≈ 2.268 kg.
- Round-trip check: Convert the result back to the starting unit—if you do not land near your original value within rounding, confirm you picked the right direction (e.g., A→B vs B→A).
Explore further: Speed Unit Converter
Short explanation
Distinguish mass from “weight” in everyday language; the tool follows standard conversion factors.
FAQ
Are these conversions exact?
Fixed definitions (e.g., inches to cm) are exact. Values that depend on standards or rounding may differ slightly by display precision.
Why pick this hub instead of a single pair page?
Pair pages target one direction and one jump; this hub page matches the multi-unit converter card where you can switch units freely.
How accurate is this calculator?
It applies standard math to the inputs you enter. Real lenders, payroll rules, and rounding can differ—use results for planning and comparison, not as binding quotes.