Stone to KG Calculator
To convert stones to kilograms, multiply the number of stones by 6.35029. For stones and pounds, convert the stones and pounds into their kilogram values and add them together.
The Stone to KG Calculator converts body weight or other weights from stones (st) and pounds (lb) into kilograms (kg), grams (g), total pounds, decimal stones, and stones-and-pounds format. The calculator supports both stone to kg conversion and kg to stone conversion, so you can enter the unit you already know and instantly see the equivalent weight.
To convert a whole number of stones to kilograms, multiply the stone value by 6.35029318 kg. For example, 10 stone × 6.35029318 = 63.5029318 kg, which is 63.50 kg when rounded to two decimal places. One stone contains exactly 14 pounds, while 1 pound = 0.45359237 kg.
When your weight is written as stones and pounds, such as 11 stone 5 lb, enter the stone value in the Stones field and the additional pounds in the Pounds field. The calculator combines both measurements and gives the equivalent result in kilograms, grams, pounds, decimal stones, and stones and pounds.
Stone to KG Calculator
Convert stones (or stones & pounds) to kilograms, grams & pounds.
How the Stone to KG Calculator Works
Convert weight between stones, pounds, kilograms, grams, and decimal stones.
Enter Your Weight
Enter a value in stones and optional pounds, or switch to kilograms and enter the weight directly.
Choose the Unit
Select From stones for stone and pound values or From kilograms for a kilogram-to-stone conversion.
Read the Results
The calculator instantly displays kilograms, grams, stones, pounds, and the combined stones-and-pounds result.
Stone to KG Conversion Formula
Use these standard weight conversion formulas for accurate results.
Stone to KG Calculator Example
See how a stone and pound weight is converted into multiple measurement units.
Important: Displayed values are rounded for readability. The calculator uses the full conversion constants before rounding the results shown on screen.
Helpful Information Before Using the Calculator
Check these measurement details before entering a weight.
Know the Stone Measurement
A stone is a unit of weight equal to exactly 14 pounds. The abbreviation is st, and the unit is commonly used for body weight in the United Kingdom and Ireland.
Understand Stones and Pounds
Weight can be written as a combination of stones and pounds, such as 10 st 8 lb. Enter the stone value in the stones field and the additional pound value in the pounds field.
Use Decimal Stones Correctly
Decimal stones are different from stones-and-pounds notation. For example, 10.5 st means 10.5 stones, which equals 10 st 7 lb because half of 14 pounds is 7 pounds.
Check the Kilogram Result
Kilograms are part of the International System of Units (SI). One stone equals 6.35029318 kg, while one kilogram equals approximately 2.20462 pounds.
Use Pounds With Stones
The pounds field is optional when converting from stones. Enter additional pounds when the weight includes a value such as 12 st 4 lb.
Review Rounding
Conversion calculations can produce several decimal places. Results displayed by the calculator are rounded for readability, while the underlying conversion uses the standard conversion constants.
Useful Stone, Pound and Kilogram Facts
- 1 stone = 14 pounds
- 1 stone = 6.35029318 kilograms
- 1 pound = 0.45359237 kilograms
- 1 kilogram = 2.2046226218 pounds
- 1 kilogram = approximately 0.157473 stone
- 1 kilogram = 1,000 grams
Frequently Asked Questions
Common questions about converting stones, pounds and kilograms.
How many kilograms are in 1 stone? +
1 stone equals exactly 6.35029318 kilograms. For everyday calculations, 1 stone is commonly rounded to 6.35 kg.
How do I convert stones to kilograms? +
Multiply the number of stones by 6.35029318. For example, 12 stone × 6.35029318 = 76.2035 kg, which is approximately 76.20 kg.
How many pounds are in a stone? +
1 stone contains exactly 14 pounds. A weight of 8 stone therefore contains 112 pounds before any additional pound value is added.
How do I convert stones and pounds to kilograms? +
Convert the stones to kilograms using stones × 6.35029318, convert the pounds using pounds × 0.45359237, then add both results. For example, 10 st 5 lb is calculated from both the 10-st component and the additional 5-lb component.
What is 10 stone in kilograms? +
10 stone equals 63.5029318 kg, which is approximately 63.50 kg when rounded to two decimal places.
What is 100 kg in stones and pounds? +
100 kg is approximately 15 stone 10.6 pounds. The exact decimal-stone value is approximately 15.7473 stone.
Can I convert kilograms to stones with this calculator? +
Yes. Select From kilograms, enter the kilogram value, and the calculator will display the equivalent weight in stones, pounds, and stones and pounds.
What is the difference between decimal stones and stones and pounds? +
Decimal stones express the complete weight as a decimal number, such as 11.5 st. Stones and pounds separate the same weight into whole stones and remaining pounds, so 11.5 st = 11 st 7 lb.