Ounces (oz) to Stone (st) Converter
Enter a value to instantly convert between weight units.
1 Ounce = 0.0045 Stone
Key Formulas
Kilogram → Pound
lb = kg × 2.20462Pound → Kilogram
kg = lb × 0.453592Gram → Ounce
oz = g × 0.035274Ounce → Gram
g = oz × 28.3495Formula
st = oz × 0.00446429One stone equals 224 ounces (14 lbs × 16 oz/lb), so an ounce is a small fraction of a stone — about 0.00446. This conversion is essentially never needed in modern contexts since stone is used for body weight and ounces for food/packages. Historical UK documents might require this conversion for genealogical or archival research.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A historical UK record showing 224 oz of grain weight is exactly 1 stone — for the agricultural archive.
224 oz = 1 st
A genealogical document showing 112 oz (7 lbs) of body weight converts to 0.5 stone for the database.
112 oz = 0.5 st
A UK historical recipe calling for 32 oz of flour (2 lbs) is 0.143 stone for the cooking historian.
32 oz = 0.143 st
A historical medical record showing 16 oz (1 lb) of patient weight converts to 0.0714 stone.
16 oz = 0.0714 st