# How do I convert kg to lbs and oz?

Converts kilograms (kg) to pounds and ounces and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/kg-to-lbs-and-oz
- JSON spec: https://www.acalculator.org/convert/kg-to-lbs-and-oz.json
- Version: c8e7d39fab2c

## Default answer

Example with the default inputs (Kilograms (kg) 1): 1 kg = 2 lb 3.27 oz (2.204623 lb).

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Kilograms (kg) | The amount in kilograms to convert. |
| result | Pounds (lb) | The same amount in pounds. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Kilograms (kg) | The amount in kilograms to convert. |
| result | Pounds (lb) | The amount in pounds. |
| lbsOz | Pounds and ounces | The weight in whole pounds and the ounces left over, to 0.01 oz. |
| pounds | Whole pounds | The whole pounds. |
| ounces | Ounces left over | The ounces after the whole pounds, rounded to 0.01 oz. |

## Method

lb = kg × 2.20462262185 (the same as kg ÷ 0.45359237); then the whole pounds, and the rest × 16 in ounces

## Assumptions

- 1 kilogram = 2.20462262185 pounds, from the exact definitions in NIST SP 811.
- Ounces are rounded to 0.01 oz; a rest that rounds to 16 oz counts as one more pound (1 lb = 16 oz).
- The answer shows at most 6 decimal places; the calculation keeps full precision.

## Worked examples

1. value = 1 gives result = 2.204623, pounds = 2, ounces = 3.27. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 3.5 gives result = 7.716179, pounds = 7, ounces = 11.46. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 7.716179 gives value = 3.5. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### How many pounds and ounces are in a kilogram?

1 kilogram is 2 lb 3.27 oz, or 2.204623 pounds, from the exact unit definitions (NIST SP 811).

### How do I convert kg to lbs and oz?

Multiply by 2.204623: lb = kg × 2.20462262185 (the same as kg ÷ 0.45359237); then the whole pounds, and the rest × 16 in ounces. For example, 1 kg × 2.204623 = 2.204623 lb.

### How do I convert pounds back to kg?

Multiply by 0.453592, or type the pounds into the second box and the converter works it out. 1 pound is 0.453592 kilograms.

### How many ounces are in a pound?

16. So 0.5 lb is 8 oz, and 7.716179 lb is 7 lb plus 0.716179 × 16 = 11.46 oz.

## Sources

- NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811