Lbs to Kg Converter

How to convert lbs to kg

Kilograms = pounds × 0.45359237. One international avoirdupois pound equals exactly 0.45359237 kilograms.

Multiply the number of pounds by 0.45359237. For example, 150 lb × 0.45359237 = 68.0388555 kg. The calculator keeps that exact factor and rounds only the displayed result to your chosen number of decimal places.

Paste lb, lbs, pound, pounds, kg, kilogram, or kilograms after a number. A unit suffix sets the matching direction automatically. A bare number starts as pounds on this page. Swap carries the unrounded result into the reverse calculation instead of converting rounded display text.

For a quick estimate, divide pounds by about 2.2. That shortcut is less precise than multiplying by 0.45359237, so use the exact result when the difference matters. The useful number of displayed decimals still depends on how precisely the original weight was measured.

This page converts international avoirdupois pound mass. It does not convert pound-force, estimate a healthy body weight, or improve the accuracy of a scale or shipping measurement.

Pounds (lb) to Kilograms (kg) chart

Values use the same exact factor as the calculator and are displayed to six decimal places where needed.

Input and rounding

Use a decimal point, a fraction such as 1/2, or a mixed number such as 1 1/2. Properly grouped thousands commas are accepted. Negative measurements, unrecognized units and incomplete numbers need to be corrected before copying. Clearing the input also clears the previous answer.

Decimal places controls display rounding, not the accuracy of your original measurement. Swap uses the underlying result rather than the rounded text. Inputs and outputs must be finite, nonnegative and no larger than one trillion. Very small positive values use scientific notation instead of being displayed as zero.