How to use Pounds to Kilograms
- Enter the mass in decimal pounds. For example, ten pounds eight ounces is 10.5 pounds.
- Choose the displayed significant digits and read the kilogram result.
- For a standalone ounce or stone conversion, use Mass and Weight Unit Converter.
Example: Pounds to Kilograms
Convert 10 pounds to kilograms.
Options
- Significant digits
- Choose 4, 6, 10 or 12 significant digits. Ten pounds is 4.5359237 kg before display rounding; the selected precision controls how much of that number is shown.
Supported inputs and limits
- One decimal-pound value, using decimal or scientific notation, with entered magnitude at most 10^15.
- Nonfinite or underflowing entries are refused.
- This uses the international avoirdupois pound.
- Mixed units must be converted to decimal pounds first; other pound definitions and gravitational-force calculations are not offered.
Where your input is processed
This tool does not upload your inputs. See the limits for anything saved on your device.
Multiply decimal pounds by 0.45359237
A 10 lb mass is 4.5359237 kg before rounding. Use the mass printed on the source label or measured by your scale, keeping the same gross or net basis when comparing values. Conversion changes the unit; any packaging included in the original measurement remains part of that amount.
Questions about Pounds to Kilograms
How many kilograms are in one pound?
One avoirdupois pound is exactly 0.45359237 kilograms. Multiply the pound amount by this factor before rounding the displayed answer.
Can I type pounds and ounces together?
Enter one decimal number of pounds. There are 16 avoirdupois ounces in a pound, so 8 ounces is 0.5 pounds. Enter 10.5 for ten pounds eight ounces, or use the full mass converter for an amount stated only in ounces.
Why does ten pounds show 4.53592 kilograms?
Ten multiplied by 0.45359237 is 4.5359237. The six-significant-digit display rounds that number to 4.53592; choose ten or twelve digits for a longer result.