Weight & Mass converter
Converting ounces to stones is a small, specific task, but getting it wrong by even a rounding error can throw off a recipe, a shipping quote, a construction cut list, or a homework answer. This page runs a live Ounces to Stones converter — type a number in oz and get the exact st equivalent instantly, calculated with the standard conversion factor rather than an approximation. One oz equals 0.00446428 st, and the calculator below scales that ratio to any amount you enter.
To convert a value from ounces to stones, multiply the number of oz by 0.00446428. That figure comes from expressing both units against the same reference — in this case, weight & mass are compared through a common weight & mass base unit — so the ratio holds no matter how large or small the input is.
Common oz amounts and their st equivalents, rounded to six decimal places for accuracy:
Weight & Mass conversions come up constantly outside of a classroom. Recipes written for a US audience use ounces and pounds while international ones use metric measurements; travel and navigation mix miles, kilometers, and nautical units depending on the country and mode of transport; and technical fields like engineering, medicine, and manufacturing often require converting between systems to match a spec sheet, a prescription, or a purchase order.
Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger. Because this converter applies the exact multiplier every time, the result for ounces to stones is consistent whether you're converting a single small number or a large batch of values one at a time.
1 oz equals 0.00446428 st. Multiply any oz value by this factor to get st.
It uses the standard defined conversion factor for ounces and stones, so results are precise to the rounding shown, not a rough estimate.
Yes — use the swap control in the calculator to reverse the direction and convert stones into ounces instead.
No. The calculation runs locally in your browser using JavaScript, so nothing you type is sent anywhere.
ToolBench runs this tool entirely in your browser. Your file or text is processed on your own device using JavaScript — nothing is uploaded to a server, nothing is stored, and there's no sign-up wall between you and the result. That's true of every one of the 500+ tools on this site, from PDF utilities to unit converters.
| Ounces | Stones |
|---|---|
| 1 oz | 0.004464 st |
| 5 oz | 0.022321 st |
| 10 oz | 0.044643 st |
| 25 oz | 0.111607 st |
| 50 oz | 0.223214 st |
| 100 oz | 0.446428 st |
| 500 oz | 2.232142 st |
| 1000 oz | 4.464284 st |