80 pounds to kilograms
36.29 kg
80 lb = 36.29 kg, or 5 st 10 lb.
kilograms
36.29kg
80 lb = 36.29 kg
The short answer
How many kilograms is 80 pounds?
80 lb = 36.29 kg, which reads as 5 st 10 lb. 1 pound = 0.453592 kilograms, so the working is 80 × 0.453592 = 36.29.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 pound = 0.453592 kilograms 80 × 0.453592 = 36.29
80 pounds as 5 st 10 lb
A decimal is the right form for a spreadsheet and the wrong one for almost everything else. Split into whole units, 80 lb is 5 st 10 lb — the reading you would actually give someone, and the one a tape measure, a scale, or a timetable is marked in.
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (kg) | Off by |
|---|---|---|
| Whole number | 36 | −0.28739 |
| 1 decimal | 36.3 | +0.01261 |
| 2 decimals | 36.29 | +0.00261 |
Round trip: take 36.29 kg back the other way and you land on 80.0058 lb — a drift of 0.0058 lb. That gap is the rounding, not the conversion.
What 80 lb looks like
80 lb
Quikrete's Concrete Mix is bagged at 40, 50, 60 and 80 lb, the 80 lb sack being the largest it offers.
Frequently asked questions
What is 80 pounds in kilograms?
80 pounds is 36.29 kilograms. 1 pound = 0.453592 kilograms, so the working is 80 × 0.453592 = 36.29.
What is 80 pounds written out in whole units?
5 st 10 lb. A decimal answer such as 36.29 kg is the right shape for a form field or a spreadsheet, but the compound form is what a tape measure, a scale, or a schedule actually reads.
How accurate is 36.29 kg?
Rounding to 36.29 kg and converting straight back gives 80.0058 lb, a drift of 0.0058 lb from the 80 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
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