kg to lbs Converter — Kilograms to Pounds
Convert any mass between kilograms (kg) and pounds (lbs) — and get grams, ounces, stone and tonnes as a bonus. Switch direction with one click.
Conversion direction
kg
1 kg = 2.2046 lbs exactly • 1 lb = 0.453 592 37 kg
- 1
Conversion factor
2.204622621 lb = 0.45359237 kg exactly (1959 international definition). - 2
Pounds
70 × 2.20462262 = 154.3236
How does this calculator work?
1 kg = 2.2046 lbs (exact definition: 1 lb = 0.45359237 kg). To convert kg to lbs, multiply by 2.2046; to convert lbs to kg, multiply by 0.4536. 70 kg = 154.3 lbs; 100 lbs = 45.36 kg. Also gives ounces, stone and tonnes.
Formula
How this is calculated
The international pound was defined in 1959 as exactly 0.453 592 37 kilograms, making the conversion factor exact. One kilogram equals 1 / 0.453 592 37 = 2.204 622 621 848 8… pounds. To go the other way, multiply pounds by 0.453 592 37 to get kilograms.
Derived units follow directly: one pound = 16 ounces, so ounces = pounds × 16. The British stone = 14 pounds, so stones = pounds / 14; the whole-stone part is the integer quotient and the remainder converts back to pounds. The metric tonne = 1 000 kg, the US short ton = 2 000 lbs = 907.185 kg, and the UK long ton = 2 240 lbs = 1 016.047 kg.
All calculations use the exact 1959 definition. Any apparent rounding is only in the display, not in the underlying arithmetic.
Frequently asked questions
1 kg = 2.204 622 621 84… lbs exactly. For everyday purposes, multiply kilograms by 2.205 — so 10 kg ≈ 22.05 lbs, 70 kg ≈ 154.3 lbs.
1 lb = 0.453 592 37 kg exactly (this is the legal definition). Multiply pounds by 0.4536 for a quick approximation.
The 1959 International Yard and Pound Agreement redefined the pound as exactly 0.453 592 37 kg to harmonise measurements across the US, UK, Canada, Australia and other Commonwealth nations. Before that date, the US and UK pound differed slightly.
TG we-Calculate Editorial Team. (2026). kg to lbs Converter — Kilograms to Pounds [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/kg-to-lbs-converter
TG we-Calculate Editorial Team. "kg to lbs Converter — Kilograms to Pounds." TG we-Calculate. 2026. https://we-calculate.com/calculator/kg-to-lbs-converter.
TG we-Calculate Editorial Team, "kg to lbs Converter — Kilograms to Pounds," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/kg-to-lbs-converter
@misc{wecalculate_kg_to_lbs_converter, title = {kg to lbs Converter — Kilograms to Pounds}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/kg-to-lbs-converter}}, year = {2026}, note = {TG we-Calculate} }
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