Pounds to Stones Converter

One Pound equals 0.07142857143 Stones (1 lb = 0.07142857143 st). Multiply a Pound value by 0.07142857143 to get the equivalent in Stones. The calculator is above; the formula and worked examples are below.

Formula

st = lb × 0.07142857143

Multiply the Pound value by 0.07142857143 to get the equivalent value in Stones.

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

Common conversion values from Pound to Stone
Pound (lb)Stone (st)
0.10.007142857143
0.50.03571428571
10.07142857143
20.1428571429
50.3571428571
100.7142857143
251.785714286
503.571428571
1007.142857143
25017.85714286
50035.71428571
100071.42857143

How to Convert Manually

Use these steps to convert Pound values to Stone without the calculator.

  1. Write down the value in Pound (lb) that you want to convert.
  2. Multiply that value by 0.07142857143.
  3. For example, 10 Pounds × 0.07142857143 = 0.7142857143 Stones.
  4. Label the result as Stone (st).

Relative Size Comparison

1 Pound
1 Stone14 Pounds
1 st

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 Stones (1 lb = 0.07142857143 st). Pound is used in body weight in the US and in US grocery and butcher pricing. Stone is used in 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

15Pounds equals1.071428571Stones.

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 Stones.

What is the formula for Pound to Stone?

The formula is st = lb × 0.07142857143.

How many Stones are in 1 Pound?

1 Pound equals 0.07142857143 Stones.

Can I convert Stone back to Pound?

Yes. 1 Stone equals 14 Pounds, 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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