An ounce (oz) is a unit of weight commonly used in the United States and a few other countries that follow the imperial system. It plays a vital role in cooking, shopping, postal services, and precious metals measurement. One ounce is approximately equal to 28.35 grams.
There are two main types of ounces:
The word "ounce" comes from the Latin word "uncia," meaning one-twelfth. Historically, it represented 1/12 of a Roman pound. Over time, different standards emerged, with the avoirdupois and troy systems becoming the most widely used.
How Is the Ounce Used: The ounce is used in various industries and everyday tasks. Here's how it shows up in real life:
The ounce may seem like a small unit, but it’s incredibly versatile. From kitchen scales to postal counters to precious metal markets, it helps measure weight where precision matters.
A stone is a unit of weight used primarily in the United Kingdom and Ireland to measure body weight. One stone equals 14 pounds or approx. 6.35 kilograms. It's not part of the official metric or imperial systems, but it remains a widely recognized standard in health, fitness, and everyday conversation in the UK. If someone says they weigh "11 stone," they mean 154 pounds (11 × 14).
The stone has historical roots going back to ancient Europe, where stones of specific weight were used in trade. Over time, England standardized the stone to mean 14 pounds in 1835, and that value is still used today. While most countries have adopted the metric system, the stone remains part of British culture—primarily when referring to personal weight.
How is the Stone Used: The stone is most commonly used to express body weight in the UK and Ireland. You'll often hear weights given in stone and pounds together, like "11 stone 4 pounds" instead of 158 pounds or 71.6 kg. It's rarely used in scientific, industrial, or commercial applications today. The metric system has replaced it in those contexts.
1 oz = 0.004464 st
Let’s say you want to convert 100 oz to st.
Using the formula:
100 × 0.004464 = 0.446 st
So, 100 oz is approximately 0.446 st.
| Ounce (oz) | Stone (st) |
|---|---|
| 1 oz | 0.004 st |
| 2 oz | 0.009 st |
| 3 oz | 0.013 st |
| 4 oz | 0.018 st |
| 5 oz | 0.022 st |
| 6 oz | 0.027 st |
| 7 oz | 0.031 st |
| 8 oz | 0.036 st |
| 9 oz | 0.04 st |
| 10 oz | 0.045 st |
| 11 oz | 0.049 st |
| 12 oz | 0.054 st |
| 13 oz | 0.058 st |
| 14 oz | 0.063 st |
| 15 oz | 0.067 st |