Convert Stone to Pound
1 stone = 14 pound (lb). For example, 10 stone = 140 pound and 100 stone = 1,400 pound. Type any value below to convert stone to pound both ways — it runs entirely in your browser.
Quick answer: Stone to Pound
1 Stone = 14 Pound (st → lb). To convert stone to pound, multiply by 14. To convert pound to stone, multiply by 0.07142857. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common stone-to-pound questions.
How to convert Stone to Pound
To convert stone to pound, multiply the number of stone by the conversion factor 14, because 1 st = 14 lb. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 lb = 0.07142857 st, so you divide by 14 (or multiply by 0.07142857) to turn pound back into stone.
lb = st × 14 ·
st = lb × 0.07142857
- Write down the value you want to convert, in stone.
- Multiply it by 14.
- The result is the same area/length/quantity expressed in pound.
Stone to Pound — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 stone is 70 pound because 5 st × 14 = 70 lb.
| Stone | Calculation | Pound |
|---|---|---|
| 1 st | 1 st × 14 = 14 lb | 14 lb |
| 2 st | 2 st × 14 = 28 lb | 28 lb |
| 3 st | 3 st × 14 = 42 lb | 42 lb |
| 5 st | 5 st × 14 = 70 lb | 70 lb |
| 7 st | 7 st × 14 = 98 lb | 98 lb |
| 10 st | 10 st × 14 = 140 lb | 140 lb |
| 12 st | 12 st × 14 = 168 lb | 168 lb |
| 15 st | 15 st × 14 = 210 lb | 210 lb |
| 20 st | 20 st × 14 = 280 lb | 280 lb |
| 25 st | 25 st × 14 = 350 lb | 350 lb |
| 50 st | 50 st × 14 = 700 lb | 700 lb |
| 100 st | 100 st × 14 = 1,400 lb | 1,400 lb |
Common Stone to Pound conversions
These are the stone-to-pound values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 stone = 14 pound
- 2 stone = 28 pound
- 2.5 stone = 35 pound
- 3 stone = 42 pound
- 4 stone = 56 pound
- 5 stone = 70 pound
- 6 stone = 84 pound
- 7 stone = 98 pound
- 8 stone = 112 pound
- 9 stone = 126 pound
- 10 stone = 140 pound
- 12 stone = 168 pound
- 15 stone = 210 pound
- 20 stone = 280 pound
- 25 stone = 350 pound
- 30 stone = 420 pound
- 50 stone = 700 pound
- 75 stone = 1,050 pound
- 100 stone = 1,400 pound
- 200 stone = 2,800 pound
- 500 stone = 7,000 pound
- 1000 stone = 14,000 pound
Stone to Pound conversion chart (both directions)
The chart below converts stone to pound and pound to stone side by side, so it works whichever way you need. 1 stone = 14 pound, and 1 pound = 0.07142857 stone.
| Stone → Pound | Pound → Stone |
|---|---|
| 0.25 st = 3.5 lb | 0.25 lb = 0.01785714 st |
| 0.5 st = 7 lb | 0.5 lb = 0.03571429 st |
| 1 st = 14 lb | 1 lb = 0.07142857 st |
| 2 st = 28 lb | 2 lb = 0.1428571 st |
| 3 st = 42 lb | 3 lb = 0.2142857 st |
| 4 st = 56 lb | 4 lb = 0.2857143 st |
| 5 st = 70 lb | 5 lb = 0.3571429 st |
| 6 st = 84 lb | 6 lb = 0.4285714 st |
| 7 st = 98 lb | 7 lb = 0.5 st |
| 8 st = 112 lb | 8 lb = 0.5714286 st |
| 9 st = 126 lb | 9 lb = 0.6428571 st |
| 10 st = 140 lb | 10 lb = 0.7142857 st |
| 12 st = 168 lb | 12 lb = 0.8571429 st |
| 15 st = 210 lb | 15 lb = 1.071429 st |
| 20 st = 280 lb | 20 lb = 1.428571 st |
| 25 st = 350 lb | 25 lb = 1.785714 st |
| 30 st = 420 lb | 30 lb = 2.142857 st |
| 40 st = 560 lb | 40 lb = 2.857143 st |
| 50 st = 700 lb | 50 lb = 3.571429 st |
| 75 st = 1,050 lb | 75 lb = 5.357143 st |
| 100 st = 1,400 lb | 100 lb = 7.142857 st |
| 150 st = 2,100 lb | 150 lb = 10.71429 st |
| 200 st = 2,800 lb | 200 lb = 14.28571 st |
| 250 st = 3,500 lb | 250 lb = 17.85714 st |
| 500 st = 7,000 lb | 500 lb = 35.71429 st |
| 1000 st = 14,000 lb | 1000 lb = 71.42857 st |
Stone vs Pound: which is bigger?
A stone is the larger unit: one stone equals 14 pounds. Put another way, you need 14 pounds to make a single stone.
What is a Stone? History, origin and usage
The stone was exactly what it sounds like: a stone kept at a market and used as a counterweight. Its value depended on what was being traded — wool, meat, cheese and glass all had different stones, ranging from about five pounds to forty. The Weights and Measures Act of 1835 ended the confusion by fixing the stone at fourteen pounds for all purposes.
The stone survives almost entirely for one job: giving a person's body weight in Britain and Ireland, where weights are read as "eleven stone four" rather than in pounds or kilograms. Doctors, gyms and bathroom scales in those countries still routinely show it.
Fourteen is an unusual number to divide by, and it is a leftover from the wool trade, where eight stone made one hundredweight of 112 pounds. The stone is barely used in the United States, where the same body weight would simply be given in pounds.
What is a Pound? History, origin and usage
The pound descends from the Roman libra pondo — "a pound by weight". English kept "pound" from pondo and the abbreviation "lb" from libra, which is why the word and its symbol look unrelated. For centuries the pound differed between countries and even between trades. That ended on 1 July 1959, when the United States, United Kingdom, Canada, Australia, New Zealand and South Africa agreed a single international pound of exactly 0.453 592 37 kilograms.
The pound is the everyday weight unit in the United States and is still widely used in the United Kingdom for body weight, food and parcels. Body weight, groceries, baggage limits and shipping rates in the US are all quoted in pounds.
Because the 1959 agreement fixed the pound as an exact number of kilograms, every pound conversion on this site is exact rather than approximate. The same agreement fixed the yard at exactly 0.9144 metres — which is why it is known as the yard-and-pound agreement.
Convert 1 Stone to other units
It can help to see a stone next to the other units it is commonly compared with. One stone (st) is equal to:
| 1 Stone equals | Unit |
|---|---|
| 6.350293 kg | Kilogram |
| 6,350.293 g | Gram |
| 6,350,293 mg | Milligram |
| 6,350,293,000 µg | Microgram |
| 0.006350293 t | Tonne |
| 0.06350293 q | Quintal |
| 14 lb | Pound |
| 224 oz | Ounce |
| 0.007 ton (US) | Short ton |
| 0.00625 ton (UK) | Long ton |
| 204.1667 oz t | Troy ounce |
| 98,000 gr | Grain |
| 31,751.47 ct | Carat |
Convert 1 Pound to other units
One pound (lb) is equal to:
| 1 Pound equals | Unit |
|---|---|
| 0.4535924 kg | Kilogram |
| 453.5924 g | Gram |
| 453,592.4 mg | Milligram |
| 453,592,400 µg | Microgram |
| 0.0004535924 t | Tonne |
| 0.004535924 q | Quintal |
| 16 oz | Ounce |
| 0.07142857 st | Stone |
| 0.0005 ton (US) | Short ton |
| 0.0004464286 ton (UK) | Long ton |
| 14.58333 oz t | Troy ounce |
| 7,000 gr | Grain |
| 2,267.962 ct | Carat |
Tips for converting Stone to Pound
- To go from stone to pound, multiply by 14; to go back, divide by 14 (or multiply by 0.07142857).
- For a quick mental estimate, remember that 1 stone ≈ 14 pound, so 10 stone ≈ 140 pound.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Stone to Pound converter
Type a number into the Stone field and the equivalent in Pound appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Pound field to convert the other way (pound to stone). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 st = 14 lb), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for stone-to-pound conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary weight units. The 1959 international yard-and-pound agreement fixes the international avoirdupois pound at exactly 0.453 592 37 kilogram, and the ounce, stone, grain and both tons are defined as exact fractions or multiples of that pound — so every imperial weight on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
Weight factors here are exact, anchored to the kilogram: the international pound is exactly 0.45359237 kg, a stone is 14 pounds, a short ton is 2,000 pounds and a long ton is 2,240, a grain is 1/7000 of a pound and a metric carat is exactly 200 mg. So the live tool and every number on this page always agree.
Frequently asked questions
- How many pound are in 1 stone?
- 1 stone = 14 pound (lb). To convert any number of stone to pound, multiply by 14.
- How do I convert stone to pound?
- Multiply the number of stone by 14. For example, 10 stone = 10 × 14 = 140 pound, and 25 stone = 350 pound.
- How many stone are in 1 pound?
- 1 pound = 0.07142857 stone. So to convert pound back to stone, multiply by 0.07142857.
- What is the formula to convert stone to pound?
- pound = stone × 14. The reverse formula is stone = pound × 0.07142857.
- How much is 100 stone in pound?
- 100 stone = 1,400 pound. (And 1000 stone = 14,000 pound.)
- Which is bigger, a stone or a pound?
- A stone is larger: 1 stone = 14 pound.
- Is this stone to pound converter accurate?
- Yes — every value is computed from the exact 14 lb per st factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pound to stone too?
- Yes. The converter works both ways — enter a value in either field. 1 pound = 0.07142857 stone.