How do I convert pounds to stones?

To convert pounds to stones, enter your value in the converter above. Get instant, accurate results for both metric and imperial weight units.

What is the difference between metric and imperial weight units?

Metric weight uses grams and kilograms based on powers of 10. Imperial uses ounces, pounds, and tons. The metric system is used worldwide for scientific purposes, while imperial is common in the US and UK for everyday use.

How accurate are these weight conversions?

Our conversions use precise mathematical formulas accurate to at least 6 decimal places. This level of precision is suitable for scientific, medical, and commercial applications.

Pound to Stone Converter

Convert Pounds to Stones instantly

From

Result

0st

Stone

Conversion Formula

Stone = Pound × 0.071429

Where:

lb = Pound
st = Stone

What is a Pound?

The pound (lb) is a unit of weight in the imperial system of measurement.

What is a Stone?

The stone (st) is a unit of weight in the imperial system of measurement.

How to Convert Pound to Stone

Convert pounds to stones instantly

Quick Reference:

1 lb = 0.071429 st
1 st = 14.000004 lb

Common Pound to Stone Conversions

1 lb
= 0.07 st

5 lb
= 0.36 st

10 lb
= 0.71 st

25 lb
= 1.79 st

50 lb
= 3.57 st

100 lb
= 7.14 st

Conversion Reference Table

Pound (lb)	Stone (st)
1	0.0714
2	0.1429
3	0.2143
4	0.2857
5	0.3571
10	0.7143
15	1.0714
20	1.4286
25	1.7857
50	3.5714
75	5.3571
100	7.1429
250	17.8571
500	35.7143
1,000	71.4285

Quick reference table showing common pounds to stones conversions.

Real-World Weight Conversions

💪

Fitness and Body Weight

Tracking weight loss or gain. Gym equipment may show weights in pounds or kilograms. Body weight in the UK is often measured in stones.

👨‍🍳

Cooking and Recipes

International recipes use different weight units. Baking especially requires precise measurements (grams vs ounces).

📦

Shipping and Postal Services

Package weight determines shipping costs. Different carriers and countries may use different units for weight limits.

🛒

Grocery Shopping

Food products labeled in grams, kilograms, pounds, or ounces. Price comparisons often require unit conversions.

👶

Newborn Baby Weight

Birth weight is recorded in pounds and ounces in the US, but kilograms and grams in most other countries.

🧳

Luggage Restrictions

Airlines have baggage weight limits in either kilograms or pounds depending on the airline and region.

Weight Conversion FAQs

Common Conversion Mistakes

⚠Confusing the direction of conversion — always check whether you are converting from Pound to Stone or vice versa.
⚠Rounding too early in multi-step calculations. Keep full precision until the final result.
⚠Using outdated or approximate conversion factors. Our converter uses values traceable to international measurement standards.

Sources & Standards

Conversion factors on this page are based on definitions from the International Bureau of Weights and Measures (BIPM) and the National Institute of Standards and Technology (NIST). All factors are accurate to at least 6 decimal places.

Last updated: November 27, 2025