Weight & Mass converter
Converting pounds 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 Pounds to Stones converter — type a number in lb and get the exact st equivalent instantly, calculated with the standard conversion factor rather than an approximation. One lb equals 0.07142855 st, and the calculator below scales that ratio to any amount you enter.
To convert a value from pounds to stones, multiply the number of lb by 0.07142855. 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 lb 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Manual conversion is where mistakes creep in — misplacing a decimal, using an outdated or rounded factor, or mixing up which unit is larger.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 pounds to stones is consistent whether you're converting a single small number or a large batch of values one at a time.
1 lb equals 0.07142855 st. Multiply any lb value by this factor to get st.
It uses the standard defined conversion factor for pounds 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 pounds 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.
| Pounds | Stones |
|---|---|
| 1 lb | 0.071429 st |
| 5 lb | 0.357143 st |
| 10 lb | 0.714285 st |
| 25 lb | 1.785714 st |
| 50 lb | 3.571427 st |
| 100 lb | 7.142855 st |
| 500 lb | 35.714274 st |
| 1000 lb | 71.428549 st |