# Kilograms to stone converter

> Convert kilograms to stone (kg to stone) with the exact factor, a conversion chart and worked steps.

Interactive version: https://www.calcopenly.com/conversion/kg-to-stones
Subject: Unit converters

Kilogram labels are used for luggage allowances, bulk ingredients and body mass. Converting a whole or fractional kilogram into smaller units is useful when a scale or recipe expects a finer denomination. Keep the measurement's original precision instead of assuming every displayed digit was measured.

One kilogram is about 0.1574730444 stone, so 70 kg is 11.023113 st. To convert kg to stone, multiply by 0.1574730444; to convert back, multiply by 6.35029318.

The stone is 14 pounds, exactly 6.35029318 kg. The factor has no exact decimal form, so results are computed with 50 significant digits and rounded only for display.

## Inputs

- **Kilograms (kg)**

## Results

- Stone (st) — main result
- Conversion
- 1 st in kilograms (kg)

## Formula

$$
\text{stone} = \text{kilograms} \times 0.157473044418
$$

## Worked examples

### 70 kg to st

- Kilograms (kg): 70 kg
- **Stone: 11.0231131092 st**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 10 kg to st

- Kilograms (kg): 10 kg
- **Stone: 1.5747304442 st**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 80 kg to st

- Kilograms (kg): 80 kg
- **Stone: 12.5978435534 st**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

## Questions

### When would I convert kg to stone?

Kilogram labels are used for luggage allowances, bulk ingredients and body mass. Converting a whole or fractional kilogram into smaller units is useful when a scale or recipe expects a finer denomination. Keep the measurement's original precision instead of assuming every displayed digit was measured.

### How many stone are in a kilogram?

One kilogram is about 0.1574730444 stone. The stone is 14 pounds, exactly 6.35029318 kg.

### How do you convert kg to stone?

Multiply the number of kilograms by 0.1574730444. For example, 70 kg × 0.1574730444 = 11.023113 st. To go the other way, divide by 0.1574730444.

### How can I estimate kg to stone without a calculator?

Multiply by 0.16. That is 1.6% high of the exact factor 0.1574730444, so 70 kg comes out as 11.2 st instead of 11.0231.

### How accurate is the kilograms to stone converter?

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “70 kg to st” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

### Where does the method come from?

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.

## Sources

- [NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C: General tables of units of measurement](https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/handbook-44)
- [BIPM, The International System of Units (SI Brochure), 9th edition](https://www.bipm.org/en/publications/si-brochure)