Pounds to Stones Converter
Convert weight between pounds (lb) and stones (st) - popular in UK weight measurements
Convert Weight
Imperial unit of weight
UK unit of body weight (14 pounds)
Conversion Result
Conversion formula: 1 stone = 14 pounds
Calculation: 0 lb ÷ 14 = 0.0000 st
Common Conversions
Pounds to Stones
Stones to Pounds
Quick Reference
Regional Usage
United Kingdom
Stones are commonly used for body weight
Ireland
Popular for personal weight measurements
United States
Pounds only - stones rarely used
Understanding Pounds and Stones
What is a Stone?
A stone is a unit of weight equal to 14 pounds (approximately 6.35 kilograms). It's primarily used in the United Kingdom and Ireland for measuring human body weight. The stone has been used as a unit of measurement for centuries in Britain.
Historical Context
The stone as a unit of measurement dates back to medieval times when trade goods were measured using standardized stone weights. The Imperial Weights and Measures Act of 1824 officially defined the stone at 14 pounds.
Why Use This Converter?
- •Converting body weight for UK/Ireland health records
- •Understanding weight measurements in British media
- •Traveling between US and UK weight systems
- •Fitness tracking with international standards
Conversion Formulas
Pounds to Stones:
stones = pounds ÷ 14
Example: 168 lb ÷ 14 = 12 st
Stones to Pounds:
pounds = stones × 14
Example: 12 st × 14 = 168 lb
Cultural Note: In the UK, people typically express body weight in stones and pounds (e.g., "12 stone 7 pounds" rather than "175 pounds"). This converter helps bridge that cultural gap.
Common Use Cases
🏥 Healthcare
Medical records in the UK use stones for body weight. Converting between pounds and stones helps with international medical documentation.
✈️ Travel
When traveling between the US and UK, understanding both weight systems helps with luggage limits and personal weight tracking.
💪 Fitness
Track weight loss or gain using either system. Many UK fitness programs use stones as the primary measurement unit.
Frequently Asked Questions
What is 128 pounds in stone?
128 pounds equals 9.14 stones. You can calculate this by dividing 128 by 14: 128 ÷ 14 = 9.14 stone. In UK notation, this would typically be written as "9 stone 2 pounds" (9 st 2 lb).
How many pounds are in a stone in the UK?
In the UK, there are exactly 14 pounds in one stone. This has been the standard since the Imperial Weights and Measures Act of 1824. The stone is the preferred unit for expressing body weight in the UK, while the US never adopted the stone and continues to use only pounds.
Why do the British use stones for weight?
The use of stones for weight in Britain is a historical tradition dating back to medieval times when goods were weighed using literal stone weights. The system became standardized over time and remains popular today because it provides a convenient middle ground between pounds and larger units for expressing human body weight.
How do you write weight in stones and pounds?
In the UK, weight is typically written as "X stone Y pounds" or abbreviated as "X st Y lb". For example, 168 pounds would be written as "12 stone 0 pounds" or "12 st 0 lb". Fractional stones can also be expressed: 175 pounds is "12 stone 7 pounds" or "12 st 7 lb".