Stone to Pounds Converter

The converter above is already set to stone and pounds, so you only need to enter your number. The result updates as you type, and nothing is sent anywhere.

1. Type your value in the Value box, for example 12. Decimals and negative numbers are accepted.
2. Check that From shows stone and To shows pounds. Both menus can be changed if you need a different pair.
3. Read the answer in the large result box. The note under it shows the exact factor used for one stone.
4. Press Copy result to put the answer on your clipboard, or Swap units to convert in the opposite direction.
5. Look at In every unit on the right to see the same amount in all the other weight units.

One stone is exactly 14 pounds, so the formula is pounds = stone x 14. Going the other way, one pound is about 0.0714286 stone. A stone is 14 pounds, about 6.35 kilograms, and is still used for body weight in the UK and Ireland. The pound is defined as exactly 0.45359237 kilograms, and the abbreviation lb comes from the Latin word libra.

Worked examples with the same factor:

• 12 stone: 12 x 14 = 168 pounds
• 30 stone: 30 x 14 = 420 pounds
• 120 stone: 120 x 14 = 1,680 pounds

Multiply by 14: 12 stone is 168 pounds.

To check the converter by hand, take 30 stone and apply the rule once: the result should be 420 pounds. If you go back again with the reverse factor 0.0714286 you land on 30 stone, which confirms that the two directions agree. Rounding the factor to fewer digits for mental math gives a result that is close but not identical, so use the tool when the last digits matter.

These reference values come from the same factor the converter uses, so they match what you see above. Use the table for common amounts, and the converter for anything else.

Pounds, ounces and stone belong to the avoirdupois system, while grams and kilograms belong to the metric system. Since 1959 the pound has been defined as exactly 0.45359237 kilograms in the United States and the Commonwealth, so conversions are exact rather than approximate. Shops, gyms, airlines and doctors each pick one system, which is why people switch between them so often.

Use the table as a sanity check rather than a substitute for the converter. The result must scale with the input: double the weight and the converted figure doubles. For anything that matters, such as a medicine dose or a shipping charge, read the unit printed on the scale or label first, because the same number means very different things in each system.

In the UK and Ireland body weight is often given in stone and pounds, while gyms, apps and US sources use pounds only.

Do not mix up the UK stone, the US ton and the metric tonne when reading older sources, and remember that body weight in stone is usually written as stone and pounds, such as 11 stone 6, not as a decimal.

Related pages: Pounds to Stone Converter for the reverse direction, and the kilograms to grams and pounds to kilograms pages. For other weight units use the weight converter.

The page keeps no history, so each visit starts again from the defaults, 12 stone. Your numbers are processed by JavaScript in your own browser and are never sent to a server, which makes the converter safe for private figures such as medical, financial or work measurements.