Stone Formula:
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Definition: This calculator converts weight measurements from pounds to stones.
Purpose: It helps with weight conversions between these two imperial units commonly used in the UK and Ireland.
The calculator uses the formula:
Where:
Explanation: Simply divide the number of pounds by 14 to get the equivalent weight in stones.
Details: Accurate conversions between pounds and stones are important for medical, fitness, and commercial applications where different measurement systems are used.
Tips: Enter the weight in pounds (must be > 0) and click calculate to get the equivalent in stones.
Q1: Why is 1 stone equal to 14 pounds?
A: This is the historical definition of the stone unit in the imperial system, dating back to trade practices in medieval England.
Q2: Where is the stone unit commonly used?
A: Primarily in the UK and Ireland for measuring human body weight and sometimes for commodities.
Q3: How precise is this conversion?
A: The calculator provides results to 3 decimal places, but in practice, stones are often expressed with fractions (e.g., 10 stone 7 pounds).
Q4: Can I convert stones back to pounds?
A: Yes, multiply stones by 14 to get pounds (e.g., 10 stones × 14 = 140 pounds).
Q5: Why doesn't the US use stones for weight?
A: The US customary system never adopted the stone unit, using pounds exclusively for body weight measurements.