Stones to Hectograms
Type a value in either box to convert between stones and hectograms. The factor is 63.5029.
| Stones | Hectograms |
|---|---|
| 1 st | 63.502932 hg |
| 2 st | 127.005864 hg |
| 3 st | 190.508795 hg |
| 5 st | 317.514659 hg |
| 10 st | 635.029318 hg |
| 25 st | 1587.573295 hg |
| 50 st | 3175.14659 hg |
| 100 st | 6350.29318 hg |
How to use
- Enter a value in the Stones field.
- The Hectograms figure appears immediately — no button to press.
- Typing in the Hectograms field converts back to Stones the same way.
- Use the reference table for the values that come up most often.
Stones to Hectograms formula
Converting stones to hectograms is a single multiplication by 63.5029318.
hg = st × 63.5029318
Why this factor: the stone and the hectogram are both defined against the kilogram, so dividing one definition by the other gives 63.5029318 directly. Both definitions are set out in full below.
To go the other way, divide by 63.5029318 — or use the Hectograms to Stones converter, which is the same calculation reversed.
Worked example
Given 150 st, multiplying by 63.5029318 yields 9525.43977 hg.
150 st × 63.5029318 = 9525.43977 hg
The converter above does this for any value you type, in either direction.
What is a stone?
A stone is fourteen pounds, still the customary unit for body weight in Britain and Ireland.
Definition: Fourteen avoirdupois pounds, so exactly 6.35029318 kilograms.
Where it is used: Personal body weight in the UK and Ireland, where weight is usually given as stones and pounds.
Worth knowing: Effectively unused in the United States, where body weight is quoted in pounds alone.
What is a hectogram?
A hectogram is 100 grams — one tenth of a kilogram.
Definition: Exactly 0.1 kilogram by SI prefix definition.
Where it is used: Seen on Italian and some other European food labels and deli scales, where prices are quoted per 'etto'.
Stones vs Hectograms
The stone is an imperial unit while the hectogram is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many hectograms are in a stone?
One stone equals 63.5029318 hectograms.
What is the formula to convert stones to hectograms?
Multiply the number of stones by 63.5029318. To reverse it, divide by 63.5029318 instead.
How do I convert hectograms back to stones?
Divide by 63.5029318, which is the same as multiplying by 0.0157473044.
How many hectograms are in 10 stones?
10 st works out to 635.029318 hg.
Is there anything to watch out for with stones?
Effectively unused in the United States, where body weight is quoted in pounds alone.
How is the stone defined?
Fourteen avoirdupois pounds, so exactly 6.35029318 kilograms.