Choose a Measurement
Select a measurement and convert between different units
Single conversion
To convert from Stone (st) to Pound (lb), use the following formula:
Let's convert 5 Stone (st) to Pound (lb).
Using the formula:
Therefore, 5 Stone (st) is equal to Pound (lb).
Here are some quick reference conversions from Stone (st) to Pound (lb):
| Stones | Pounds |
|---|---|
| 0.000001 st | lb |
| 0.001 st | lb |
| 0.1 st | lb |
| 1 st | lb |
| 2 st | lb |
| 3 st | lb |
| 4 st | lb |
| 5 st | lb |
| 6 st | lb |
| 7 st | lb |
| 8 st | lb |
| 9 st | lb |
| 10 st | lb |
| 20 st | lb |
| 30 st | lb |
| 40 st | lb |
| 50 st | lb |
| 100 st | lb |
| 1000 st | lb |
| 10000 st | lb |
For all Weight converters, choose units using the From/To dropdowns above.
The stone (st) is a unit of measurement equal to 14 pounds (lb).
It's part of the imperial system and is still commonly used in a few countries, especially for weighing people.
For use in international contexts or scientific applications, the stone is often converted to the metric system.
One stone is equal to exactly 6.35029318 kilograms (kg).
This precise conversion is used in international trade and science to ensure everyone is using the exact standard measurement.
Although it's an older unit, the stone remains the primary unit of measurement for body weight in the United Kingdom and Ireland.
It's common to hear someone state their weight as a combination of stone and pounds, like "12 stone 6 pounds."
The stone traces its origins back to the medieval English wool trade, where a "stone of wool" referred to a standard 14-pound measure used for buying and selling.
Stones for other goods could vary in weight—for example, a stone of glass was just 5 pounds—but over time, the 14-pound stone became the official legal standard.
The pound (lb) is a basic unit of mass and weight in the imperial system. It's widely used in the United States and elsewhere to measure things like groceries, body weight, and shipping.
Have you ever wondered why we write "lb" for pound? The abbreviation has ancient Roman roots.
It originates from the Roman unit of mass, the libra, which is Latin for "scales" or "balance."
The whole Roman phrase was libra pondo, meaning "a pound by weight." While English speakers adopted the pondo part, which became the word "pound," the abbreviation "lb" was retained from the phrase "libra."
Not all pounds are created equal. The two most common types are the avoirdupois pound and the troy pound.
To ensure global consistency, the pound is officially defined in relation to the kilogram (kg), the base unit of mass in the metric system.
Since 1959, one pound has been internationally defined as exactly 0.45359237 kilograms.
This agreement ensures that a pound in the US is the same as a pound in the UK. For everyday calculations, you can remember that 1 pound is about 0.45 kg.