Convert Stones to Kilograms

To convert stones to kilograms, use this fixed conversion:

• 1 stone (st) = 6.35029318 kilograms (kg)
• Formula: kg = stones × 6.35029318

Example:

• 10 st × 6.35029318 = 63.5029 kg (about 63.5 kg)

For quick estimates, you can round the factor:

• 1 st ≈ 6.35 kg

This stone to kg conversion works for body weight and other everyday weights, since a stone is a set unit equal to 14 pounds.

How many kilograms are in a stone?

1 stone equals 6.35029318 kilograms.
To convert stones to kilograms, multiply the number of stones by 6.35029318.

How do you convert stones to kilograms?

Use this formula: kg = stones × 6.35029318.
Example: 10 st × 6.35029318 = 63.5029 kg.

How many stones are in a kilogram?

1 kilogram equals 0.157473 st.
To convert kilograms to stones, multiply kilograms by 0.157473.

What’s the easiest way to convert stones and pounds to kilograms?

First convert everything to pounds, then convert pounds to kilograms.

• 1 stone = 14 pounds
• kg = pounds × 0.45359237

Example: 11 st 3 lb = (11 × 14) + 3 = 157 lb; 157 × 0.45359237 = 71.214 kg.

How do you convert kilograms to stones and pounds?

Convert kilograms to total pounds, then split into stones and pounds.

• pounds = kg ÷ 0.45359237
• stones = floor(pounds ÷ 14)
• remaining pounds = pounds − (stones × 14)

Example: 70 kg ÷ 0.45359237 = 154.324 lb
154.324 ÷ 14 = 11 st with 0.324 lb left, so 11 st 0.3 lb (rounded).

Why do stones convert to a number with decimals in kilograms?

Stones and kilograms use different base units. A stone is fixed at 14 pounds, and a pound is not a clean fraction of a kilogram. That’s why the result often has decimals.

Is “stone” the same as “stones” or “st”?

Yes. Stone is the unit name, stones is the plural, and st is the common abbreviation.
Example: 9 stone = 9 stones = 9 st.

Where is the stone unit used?

Stone is most common in the UK and Ireland for measuring body weight. Many other countries use kilograms, especially in health and sports settings.

How accurate is the stones to kilograms conversion?

The exact conversion uses 1 st = 6.35029318 kg.
For everyday use, rounding to 6.35 kg per stone is often close enough, but exact values help for medical or fitness records.

How do you round stones to kilograms the right way?

Round based on how you plan to use the number.

• For body weight tracking, rounding to 1 decimal place is common (example: 72.6 kg).
• For medical notes, 2 decimals may be better (example: 72.56 kg).

What’s a quick mental estimate for stones to kilograms?

A simple rule is 1 stone is about 6.35 kg.
You can also estimate with 6.5 kg per stone for faster math, but it will be a bit high.

How many kilograms are in 1 stone 1 pound?

1 st 1 lb = 15 lb.
15 × 0.45359237 = 6.8039 kg.

How many kilograms are in 8 stone, 10 stone, and 12 stone?

• 8 st = 8 × 6.35029318 = 50.8023 kg
• 10 st = 10 × 6.35029318 = 63.5029 kg
• 12 st = 12 × 6.35029318 = 76.2035 kg

What is the formula to convert stones to kilograms in a table or spreadsheet?

Use: =stones*6.35029318
If you have stones in cell A1, use: =A1*6.35029318.

Can stones be used for things other than body weight?

Yes, but it’s uncommon today. Stone was once used for trade goods, but the value could vary by item and region. For modern use, a stone is treated as exactly 14 pounds.