Pound to Stone Converter
One Pound equals 0.07142857143 Stone (1 lb = 0.07142857143 st). Multiply a Pound value by 0.07142857143 to get the equivalent in Stone. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
st = lb × 0.07142857143
Multiply the Pound value by 0.07142857143 to get the equivalent value in Stone.
Example Conversions
1 Pound (lb)
0.07142857143 Stone (st)
5 Pound (lb)
0.3571428571 Stone (st)
10 Pound (lb)
0.7142857143 Stone (st)
25 Pound (lb)
1.785714286 Stone (st)
100 Pound (lb)
7.142857143 Stone (st)
Conversion Table
| Pound (lb) | Stone (st) |
|---|---|
| 0.1 | 0.007142857143 |
| 0.5 | 0.03571428571 |
| 1 | 0.07142857143 |
| 2 | 0.1428571429 |
| 5 | 0.3571428571 |
| 10 | 0.7142857143 |
| 25 | 1.785714286 |
| 50 | 3.571428571 |
| 100 | 7.142857143 |
| 250 | 17.85714286 |
| 500 | 35.71428571 |
| 1000 | 71.42857143 |
How to Convert Manually
Use these steps to convert Pound values to Stone without the calculator.
- Write down the value in Pound (lb) that you want to convert.
- Multiply that value by 0.07142857143.
- For example, 10 Pound × 0.07142857143 = 0.7142857143 Stone.
- Label the result as Stone (st).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Pound and one Stone.
About Pound and Stone
The pound (avoirdupois) is defined as exactly 0.45359237 kilograms under the 1959 international agreement. Body weight, groceries, and shipping in the US run on pounds. The stone equals 14 pounds, exactly 6.35029318 kilograms. It survives almost exclusively for stating body weight in the UK and Ireland. One Pound equals 0.07142857143 Stone (1 lb = 0.07142857143 st). Pound to Stone conversion comes up most often in body weight in the US and in US grocery and butcher pricing, typically when figures need restating for body weight in the UK and Ireland.
Precision and Rounding: Metric-imperial mass factors are exact (1 lb = 0.45359237 kg by the 1959 agreement), so precision is purely a display choice. One decimal place is enough for body weight and cooking; nutrition labeling, pharmacy, and lab work need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Pound equals 1.071428571 Stone.
15 lb × 0.07142857143 = 1.071428571 st
FAQ
How do I convert Pound to Stone?
Multiply the Pound value by 0.07142857143 to get the equivalent value in Stone.
What is the formula for Pound to Stone?
The formula is st = lb × 0.07142857143.
How many Stone are in 1 Pound?
1 Pound equals 0.07142857143 Stone.
Can I convert Stone back to Pound?
Yes. 1 Stone equals 14 Pound, and the related converter can reverse the calculation.
What are common names for Pound and Stone?
Pound is shown as lb and may also be searched as pounds, lbs. Stone is shown as st and may also be searched as stones.
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