Mass & Weight Converter
Convert between Milligram, Gram, Kilogram and more — step-by-step working shown.
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Common conversions from Kilogram
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Mass and Weight Converter
Our Mass and Weight Converter helps you switch between common units like grams, kilograms, pounds, ounces, and stone. This is useful for many everyday tasks, from following a recipe that uses different units to understanding your body weight in various measurements or calculating shipping costs for parcels.
It's important to remember that mass is the amount of 'stuff' in an object and stays the same everywhere, while weight is the force of gravity acting on that mass. On Earth, we often use the terms interchangeably, but they are technically different. This converter focuses on converting between different units of mass.
How to Convert Kilograms to Stone Manually
Know the Conversion Factor
The key conversion factor is that 1 stone is equal to 6.35029 kilograms. This is the number you'll use to switch between the units.
Divide by the Factor
To convert a value from kilograms to stone, you need to divide the number of kilograms by the conversion factor. The formula is: Stone = Kilograms / 6.35029.
Calculate Your Result
For example, if you have 70 kg, you would calculate 70 / 6.35029. This gives you approximately 11.024 stone. Always double-check your calculation.
Conversions in context
Body Weight
75 kg → 11.811 stone
Baking Ingredients
300 g → 10.582 oz
Parcel Shipping
10 lb → 4.536 kg
Science Experiment
750 mg → 0.75 g
Gym Weights
20 kg → 44.092 lb
Pet Weight
3 stone → 19.051 kg
Common mistakes to avoid
- Someone says: 'I weigh 10 stone, which is about 100 pounds.':They are incorrectly assuming 1 stone equals 10 pounds. In reality, 1 stone is 14 pounds. 10 stone is 140 pounds (10 x 14 = 140). Or, 10 stone is 63.5 kg (10 x 6.35029).
- A recipe calls for 500g of flour, and someone uses 0.5 pounds:They are confusing grams with pounds and making a direct conversion of 1000g to 1kg, then assuming 1kg is 1lb. 500g is not 0.5 pounds. 500g is approximately 1.102 pounds (500 / 453.592). 0.5 pounds is only about 226.8 grams.
- A student converts 250 milligrams to 2.5 grams:They are dividing by 100 instead of 1000. There are 1000 milligrams in 1 gram. To convert milligrams to grams, you divide by 1000. So, 250 mg / 1000 = 0.25 grams.
Questions people ask
What is the difference between mass and weight?
Mass is a measure of the amount of matter in an object and remains constant regardless of location. Weight, on the other hand, is the force of gravity acting on an object's mass. Your mass is the same on Earth and the Moon, but your weight would be much less on the Moon due to its weaker gravity.
How do I convert kg to stone and pounds?
To convert kilograms to stone, divide the kg value by 6.35029 (since 1 stone = 6.35029 kg). To then convert the remaining decimal part of a stone into pounds, multiply it by 14 (since 1 stone = 14 pounds). For example, 70 kg is 11.024 stone, which is 11 stone and 0.024 * 14 = 0.336 pounds.
How many grams in a pound?
There are exactly 453.592 grams in one pound (avoirdupois). This is a standard conversion factor used internationally. You can use this to convert between metric and imperial measurements for things like cooking or shipping.
Why do UK people use stone for body weight?
The 'stone' is an old English unit of mass, historically used for weighing agricultural products. While the UK officially adopted the metric system, the stone remains in common use for expressing human body weight, especially among older generations. It's a cultural legacy rather than a scientific standard.
How do I convert ounces to grams for a recipe?
To convert ounces to grams for a recipe, you multiply the number of ounces by 28.3495. This is because 1 ounce is equal to 28.3495 grams. For example, if a recipe calls for 8 ounces of flour, you would need 8 * 28.3495 = 226.796 grams.