Weight Converter
Convert a weight or mass from one unit to another.
Enter the values required below.
🌍 What Would I Weigh on Other Planets?
Your mass stays the same wherever you go, but your weight changes because gravity is different on each world. Enter your Earth weight and choose a planet or the Moon to see the approximate weight there.
Frequently Asked Questions
How do I use this weight converter?
Use this online weight converter to quickly convert weight and mass measurements from one unit to another. Enter the weight, select the original unit and the unit you want to convert to, and click Convert. You can use this weight conversion calculator to convert kilograms, grams, milligrams, pounds, ounces and tonnes.
Where did the kilogram come from?
The kilogram is the standard metric unit used for measuring mass and is widely used for weight measurement around the world. The kilogram became part of the metric system developed in France and is now one of the most commonly used units in online weight conversion and everyday weight measurement.
Where did the pound come from?
The pound is an old unit of mass used in European measurement systems. Different regions historically used pounds of different sizes. The modern international pound is standardized as exactly 0.45359237 kilograms, making kilograms to pounds and pounds to kilograms common weight conversions.
Why are there 16 ounces in a pound?
In the commonly used avoirdupois system, one pound contains 16 ounces. This traditional division is still used for everyday weight measurement and is why pounds to ounces and ounces to pounds are common weight conversions.
Where did the ounce come from?
The ounce is an old unit of weight that developed from European measurement systems. Today, the ounce is commonly used for measuring smaller weights, particularly in systems that use pounds and ounces. This makes ounces to grams and grams to ounces useful weight conversions.
What is the difference between weight and mass?
Mass describes the amount of matter in an object, while weight is the force caused by gravity acting on that mass. In everyday language, however, kilograms, grams and pounds are commonly referred to as weight units, which is why a weight converter is often also called a mass converter.
Why is the metric system used for weight?
The metric system makes weight conversion easier because its units are based on powers of ten. For example, 1 kilogram equals 1,000 grams and 1 gram equals 1,000 milligrams. This makes kilogram to gram, gram to kilogram and milligram to gram conversions straightforward.
How many pounds are in a kilogram?
One kilogram equals approximately 2.20462 pounds. This is one of the most common weight conversions, especially when converting kilograms to pounds for body weight, fitness, shipping and everyday measurements.
What weight units can this converter convert?
This weight conversion calculator supports common weight and mass units including kilograms, grams, milligrams, pounds, ounces and tonnes. Use the online weight converter to quickly convert between these different weight units.
Can I ask a question?
Yes. If you couldn't find the weight conversion answer you're looking for, you can ask us a question below.
💡 Interesting Facts About Weight
Why do you weigh less in the morning?
You can weigh slightly less in the morning because your body loses water through breathing and perspiration while you sleep. You also haven't eaten or drunk anything for several hours.
How much does the human brain weigh?
An adult human brain weighs about 1.4 kilograms. Although it makes up only around 2% of body weight, the brain uses roughly 20% of the body's energy.
How much does a cloud weigh?
A typical cumulus cloud can contain around 500,000 kilograms of water. That's roughly comparable to the weight of 100 elephants — yet it remains suspended in the atmosphere.
How heavy is the air around us?
Atmospheric pressure means the air above us exerts an enormous force on our bodies. The total weight of the atmosphere above a person can be thought of as roughly 10 metric tons, although the pressure acts in all directions and our bodies are adapted to it.
Does Earth gain weight from space dust?
Yes. Tiny particles from space continually fall onto Earth. Estimates suggest that tens of thousands of tons of cosmic dust reach Earth each year.
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