shipping and freightbody and fitness measurementsfood and grocery quantitiesproduct specifications
Sources and Accuracy
Weight and mass conversions use kilogram as the reference unit. Common factors include 1 pound = 0.45359237 kilogram and 1 ounce = 0.028349523125 kilogram.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
About These Units
stone [st]
Definition
The stone is an imperial mass unit equal to 14 pounds.
History
Stone weights were historically used for trade and became standardized in the imperial system.
Current use
Stones are mainly used for body weight in the United Kingdom and Ireland.
ounce [oz]
Definition
The ounce is an avoirdupois mass unit equal to 28.349523125 grams.
History
The avoirdupois ounce became the standard ounce for general weight measurement.
Current use
Ounces are used for food packages, recipes, postal weights, consumer goods, and small shipments.
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How to Convert
Enter the value in the “From value” field.
Confirm the source unit is stone [st].
Confirm the target unit is ounce [oz].
Read the instant result and formula.
Where This Conversion Is Used
shipping and freightbody and fitness measurementsfood and grocery quantitiesproduct specifications