ConvBolt — Unit ConverterOunces to Stone Converter
Converting ounces to stone is a multiplication by a fixed factor: 1 oz = 0.004464286 st. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one ounce works out to 0.004464286 st, the stone is the far smaller unit of the two: a figure given in stone always carries a smaller number than the same measurement in ounce. A chart drawn in oz can hide that, so check which label the axis uses before you compare two readings.
Cooking and shipping are the two places this pair appears most: a kitchen scale reads in ounces while a recipe or label is written in stone, and a courier tariff built on stone still has to be checked against a scale showing ounces.
The conversion factor used here is 0.004464286 st per ounce (9 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 oz a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 224 oz per st, the exact reciprocal, so a round trip through both pages returns your original number.
Ounces to Stone formula
Use this formula to convert any ounce value to stone:
Worked example: 100 oz × 0.004464286 = 0.4464286 st.
Ounces to Stone conversion table
| Ounces (oz) | Stone (st) |
|---|---|
| 0.5 oz | 0.002232143 st |
| 1 oz | 0.004464286 st |
| 2 oz | 0.008928571 st |
| 5 oz | 0.02232143 st |
| 10 oz | 0.04464286 st |
| 20 oz | 0.08928571 st |
| 50 oz | 0.2232143 st |
| 100 oz | 0.4464286 st |
| 500 oz | 2.232143 st |
| 1000 oz | 4.464286 st |
How to convert ounces to stone
Multiply the ounce value by 0.004464286 to get the equivalent in stone. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Stone to Ounces converter instead of dividing by hand; both pages use the same source factors. For every other oz conversion in one place, see the oz conversion hub.
Frequently asked questions
How many stone are in 1 ounce?
1 ounce = 0.004464286 st.
What is 100 ounces in stone?
100 oz = 0.4464286 st.
Is converting ounces to stone the same as stone to ounces?
No — the direction changes the multiplier. The reverse conversion (1 st = 224 oz) is on the Stone to Ounces page.
Related conversions
Try the ConvBolt Unit Converter for any other weight unit, browse the Weight conversions, or read our conversion guides.