Weight Conversion Calculator | Pounds ↔ Ounces, Kg, Stones, Tons

Need to convert between kilograms, pounds, ounces, or stones - Our Weight Conversion Calculator makes it quick and easy to switch between all major weight units, including pounds ↔ ounces, pounds ↔ kilograms, stones ↔ kilograms, and tons ↔ grams.

In the United States and North America, weight is commonly measured in pounds and ounces, especially for cooking, baking, and shopping. In contrast, most of the world uses the metric system (kilograms and grams) as the standard.

👉 This free online tool saves time and ensures accuracy — bookmark it for easy access whenever you need instant weight conversions.

grams	1000
kg	1
tons	0.000907184
ounce	35.2739619
pounds	2.204
stone	0.1574730

Developed by Medindia Content Team |
Calculator reviewed by The Medindia Medical Review Team Last Updated on Nov 25, 2021

FAQs

1. Why Does the U.S. Use Pounds and Ounces Instead of Kilograms?

Most of the world uses the metric system (kilograms and grams) because it is the international standard (SI units) for science, trade, and healthcare.

However, the United States still relies on the old customary system (pounds and ounces) for everyday use, due to historical practices and the cost of converting industries to metric.

Canada and the UK officially use metric, but pounds and ounces remain common in daily life, especially for body weight and food items.

2. What is the conversion factor between stones and kilograms?

One stone ≈ 6.35029 kilograms.
Multiply stones by 6.35029 to get kilograms.

3. How many stones are there in a kilogram?

1 kilogram ≈ 0.15747 stones (which is 1 ÷ 6.35029).

4. How many pounds are in a stone?

1 stone = 14 pounds.

5. How many grams are in a ton / tonne?

1 metric ton (tonne) = 1,000,000 grams. (Unit Converters)
1 short ton (US) ≈ 907,184.74 grams. (Inch Calculator)
1 long ton (UK) ≈ 1,016,046.9088 grams. (Convert Units)

6. How many kilograms are in a ton / tonne?

1 metric ton (tonne) = 1000 kilograms.

7. How many grams are in a kilogram?

1 kilogram = 1,000 grams.

8. How do I convert stones to grams?

Multiply the number of stones by 6.35029 to get kilograms, then multiply by 1,000 to get grams.

9. How do I convert grams to tons or tonnes?

Divide the number of grams by 1,000,000 to get metric tonnes; alternatively, divide by ~907,184.74 for US short tons.

10. What is the difference between “ton”, “tonne”, “short ton”, and “long ton”?

Tonne refers to metric ton = 1,000 kg.
Short ton (US) = 2,000 pounds ≈ 907,184.74 grams.
Long ton (UK) = 2,240 pounds ≈ 1,016,046.91 grams.

11. Why use grams, kilograms, and tonnes instead of pounds or stones?

Because grams/kilograms/tonnes are metric units (SI units), which are standard used in science, health, most countries globally. Stones and pounds are mostly used in UK, US, etc.