Convert stone to pounds
Stone to pounds and kilograms. Type 11 st 4 lb, 11.5 or just 11 — all three are understood, and a stone is always exactly 14 pounds.
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Type “11 st 4 lb”, “11.5” or just “11” — all three are understood.
Read as 11 st 4 lb.
pounds = stone × 14 = 11.285714 × 14 = 158.0 lb 1 st = 14 lb
| stone | pounds | Your input, tidied |
|---|---|---|
| 7 st | 98.0 lb | 7 st 0.0 lb |
| 8 st | 112.0 lb | 8 st 0.0 lb |
| 9 st | 126.0 lb | 9 st 0.0 lb |
| 10 st | 140.0 lb | 10 st 0.0 lb |
| 11 st | 154.0 lb | 11 st 0.0 lb |
| 12 st | 168.0 lb | 12 st 0.0 lb |
| 13 st | 182.0 lb | 13 st 0.0 lb |
| 14 st | 196.0 lb | 14 st 0.0 lb |
| 15 st | 210.0 lb | 15 st 0.0 lb |
| 16 st | 224.0 lb | 16 st 0.0 lb |
| 17 st | 238.0 lb | 17 st 0.0 lb |
| 18 st | 252.0 lb | 18 st 0.0 lb |
| 20 st | 280.0 lb | 20 st 0.0 lb |
| 22 st | 308.0 lb | 22 st 0.0 lb |
| 25 st | 350.0 lb | 25 st 0.0 lb |
Fourteen, exactly
A stone is fourteen pounds. Not approximately fourteen — exactly. The conversion is a whole-number multiplication with no decimals introduced at any point, which makes this the cleanest conversion on the whole site.
What people actually need is usually the reverse of that simplicity: turning a two-part "11 stone 4" into a single number an American form or a fitness app will accept. That is 158 pounds, and 71.67 kg.
Three ways to type it
| Entry | Means | Pounds |
|---|---|---|
| 11 st 4 lb | Eleven stone four pounds | 158 |
| 11.5 | Eleven and a half stone | 161 |
| 11 | Eleven stone exactly | 154 |
Note the middle row: half a stone is seven pounds, not five. The decimal and the two-part form are genuinely different notations and cannot be read interchangeably.
The stone ladder
- 7 st = 98 lb = 44.45 kg
- 9 st = 126 lb = 57.15 kg
- 10 st = 140 lb = 63.50 kg
- 11 st = 154 lb = 69.85 kg
- 12 st = 168 lb = 76.20 kg
- 14 st = 196 lb = 88.90 kg
- 16 st = 224 lb = 101.60 kg
- 20 st = 280 lb = 127.01 kg
Filling in an American form
US medical intake forms, gym sign-ups, airline seat-belt-extension requests and driving licences all want plain pounds. There is no "stone" field anywhere in American paperwork, and writing 11.4 in a pounds box is a genuine hazard — it will be read as eleven and a bit pounds, not one hundred and sixty.
Boxing and horse racing
Two sports keep the stone alive in specialist ways. British boxing weight classes are quoted in stone and pounds alongside the official pound figure — middleweight is 11 st 6 lb (160 lb). Horse racing handicaps in the UK and Ireland are given in stone and pounds for the weight carried, where a single pound of difference is considered meaningful, and the two-part notation is used precisely because it makes single pounds visible.
Questions
How many pounds in a stone?
Exactly 14, by definition. The conversion is a whole-number multiplication with no rounding anywhere.
How do I write 11 stone 4 pounds as a decimal?
11 st 4 lb is 158 lb, which is 11.2857 st. Note that it is not 11.4 — the decimal is a fraction of fourteen pounds.
What is 11 stone in kilograms?
69.85 kg. Add four pounds and you are at 71.67 kg. The kilogram figure is shown live as you type.
Is there a "stone" in the US?
Not in everyday use. American scales and medical records use pounds throughout, which is why converting a UK weight for a US form usually means going to plain pounds rather than kilograms.