Convert Pounds (lb) to Stones (st)

Q: How many pounds are in a stone?

Exactly 14 pounds. This is a fixed definition, not an approximation. So 10 stone = 140 lb, 12 stone = 168 lb, 15 stone = 210 lb.

Q: What is 200 pounds in stones?

200 ÷ 14 = 14 stone 4 pounds (14.286 st). Quick check: 14 × 14 = 196, remainder = 4.

1 pound equals 0.0714286 stones.

Formula: st = lb × 0.0714286

Pound to Stone Converter

What Is a Pound?

The pound (lb) is a unit of mass used in the US and UK. In the US, body weight is typically given in pounds only. In the UK and Ireland, stones and pounds are preferred.

What Is a Stone?

The stone (st) is a British unit of mass equal to exactly 14 pounds. It is primarily used in the UK and Ireland for expressing body weight (e.g., "11 stone 4 pounds").

Pounds to Stones Formula

The conversion is exact:

stones = pounds ÷ 14 exact

1 stone = 14 pounds exactly, by definition.

Worked Example

Convert 165 lb to stones and pounds:

Divide: 165 ÷ 14 = 11 remainder 11
Result: 11 stone 11 pounds (or 11.786 st)

Quick Estimation

Divide pounds by 14. A useful shortcut: divide by 7 and halve. Example: 165 ÷ 7 ≈ 23.6, then 23.6 ÷ 2 ≈ 11.8 st. Or simply remember common anchors: 140 lb = 10 st, 154 lb = 11 st, 168 lb = 12 st.

Common Use Cases

Body weight: US visitors to the UK need to convert pounds to stones for medical forms, gym equipment, and everyday conversation.
Medical records: UK doctors record weight in stones and pounds; US records use pounds only. Accurate conversion is essential for medication dosing.
Fitness tracking: Apps like MyFitnessPal display both formats. Knowing 1 stone = 14 lb helps interpret progress in either system.

Frequently Asked Questions

How many pounds are in a stone?

Exactly 14 pounds. This is a fixed definition, not an approximation. So 10 stone = 140 lb, 12 stone = 168 lb, 15 stone = 210 lb.

Why does the UK use stones for body weight?

Historical tradition. The stone has been used in the British Isles since the medieval period. While the UK officially metricated, stones remain deeply embedded in everyday language for body weight — similar to how the US retains pounds.

How do I express a decimal stone in stones and pounds?

Multiply the decimal part by 14. Example: 11.786 st → 0.786 × 14 = 11 lb. So 11.786 st = 11 stone 11 pounds. Always round to whole pounds for everyday use.

What is 200 pounds in stones?

200 ÷ 14 = 14 stone 4 pounds (14.286 st). Quick check: 14 × 14 = 196, remainder = 4.

Common Pound to Stone Conversions

Pound to Stone (Part 1)

Pound	Stone	Actions
100 pounds	7.14286 stones
120 pounds	8.57143 stones
130 pounds	9.28571 stones
140 pounds	10 stones
150 pounds	10.7143 stones
160 pounds	11.4286 stones

Pound to Stone (Part 2)

Pound	Stone	Actions
170 pounds	12.1429 stones
180 pounds	12.8571 stones
190 pounds	13.5714 stones
200 pounds	14.2857 stones
220 pounds	15.7143 stones
250 pounds	17.8571 stones

Pounds to stones Conversion Table

Reference table with common pounds to stones conversions. All values calculated with high precision.

Pounds to Stones Table
0.01 to 50

Pounds	Stones	Actions
0.01 lb	0.000714286 st
0.025 lb	0.00178571 st
0.05 lb	0.00357143 st
0.1 lb	0.00714286 st
14 lb	0.0178571 st
12 lb	0.0357143 st
1 lb	114 st
2 12 lb	0.178571 st
5 lb	0.357143 st
10 lb	0.714286 st
25 lb	1.78571 st
50 lb	3.57143 st

Pounds to Stones Table
100 to 10000000

Pounds	Stones	Actions
100 lb	7.14286 st
250 lb	17.8571 st
500 lb	35.7143 st
1000 lb	71.4286 st
2500 lb	178.571 st
5000 lb	357.143 st
10000 lb	714.286 st
25000 lb	1785.71 st
50000 lb	3571.43 st
100000 lb	7142.86 st
250000 lb	17857.1 st
500000 lb	35714.3 st
1000000 lb	71428.6 st
2500000 lb	178571 st
5000000 lb	357143 st
10000000 lb	714286 st

Stones to Pounds Table
0.0001 to 12

Stones	Pounds	Actions
0.0001 st	0.0014 lb
0.00025 st	0.0035 lb
0.0005 st	0.007 lb
0.001 st	0.014 lb
0.0025 st	0.035 lb
0.005 st	0.07 lb
0.01 st	0.14 lb
0.025 st	0.35 lb
0.05 st	0.7 lb
0.1 st	1.4 lb
14 st	3 12 lb
12 st	7 lb

Stones to Pounds Table
1 to 100000

Stones	Pounds	Actions
1 st	14 lb
2 12 st	35 lb
5 st	70 lb
10 st	140 lb
25 st	350 lb
50 st	700 lb
100 st	1400 lb
250 st	3500 lb
500 st	7000 lb
1000 st	14000 lb
2500 st	35000 lb
5000 st	70000 lb
10000 st	140000 lb
25000 st	350000 lb
50000 st	700000 lb
100000 st	1400000 lb

Looking for the reverse? Convert Stone to Pound

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Kg to Stones and Pounds — UK body weight format

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Conversion factors verified against NIST (National Institute of Standards and Technology), BIPM (International Bureau of Weights and Measures) 1 lb = 0.45359237 kg by international agreement (1959). Last reviewed: March 2026

By Adilson Fernandes

Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.