Mass Unit Converter
The mass unit converter allows you to convert between commonly used mass measurements such as kilograms, pounds, grams, and ounces. This tool is useful for scientists, cooks, shippers, and anyone working with weight measurements. Select a conversion below or choose from popular mass unit conversions.
Supported Mass Units
| Unit | Short Form | Description |
|---|---|---|
| Gram | g | SI base unit of mass (1/1000 of kilogram) |
| Kilogram | kg | SI base unit equal to 1,000 grams |
| Milligram | mg | 1/1,000 of a gram |
| Microgram | ug | 1/1,000,000 of a gram |
| Tonne | tonne | Metric ton equal to 1,000 kilograms |
| Ton | ton | US ton equal to 2,000 pounds |
| Grain | gr | Smallest traditional unit, approximately 64.8 mg |
| Dram | dr | 1/16 of an ounce |
| Ounce | oz | Imperial unit equal to approximately 28.35 grams |
| Pound | lbm | Imperial unit equal to 16 ounces |
| Hundredweight | cwt | US unit equal to 100 pounds |
| Stick | stick | Informal unit, typically for butter (113 grams) |
| Stone | stone | British unit equal to 14 pounds |
| Nanogram | ng | 1/1,000,000,000 of a gram |
| Picogram | pg | 10^-12 grams, used in chemistry |
| Femtogram | fg | 10^-15 grams, used in molecular biology |
| Megagram | Mg | 1,000,000 grams, equal to 1 metric ton |
Popular Mass Conversions
How Mass Unit Conversion Works
Mass units are converted using fixed mathematical ratios based on standard definitions.
For example, 1 kilogram equals 2.20462 pounds, and 1 pound equals approximately 453.592 grams.
Our mass converter uses accurate conversion factors to ensure precise results for cooking, shipping, and scientific applications.
Common Use Cases
- Cooking and recipe conversion
- Shipping and postal weight calculation
- Scientific laboratory measurements
- Personal fitness and weight tracking
- International commerce and trade
Frequently Asked Questions
How accurate is the mass unit converter?
Our converter uses precise conversion factors maintained by international standards organizations. Results are accurate to multiple decimal places, suitable for professional use in science, commerce, and cooking.
What’s the difference between mass and weight?
Mass is the amount of matter in an object and doesn’t change with location. Weight is the force of gravity on that mass and varies with location. However, in everyday use, the terms are often used interchangeably.
How many pounds are in a kilogram?
1 kilogram equals approximately 2.20462 pounds. This is one of the most commonly used mass conversions.
How many grams are in a pound?
1 pound equals approximately 453.592 grams. For quick estimates, you can use 454 grams.
What is the difference between a ton and a tonne?
A ton (short ton or US ton) equals 2,000 pounds. A tonne (metric ton) equals 1,000 kilograms or approximately 2,204.62 pounds. The tonne is slightly heavier.
How many ounces are in a pound?
1 pound equals exactly 16 ounces. This is a fundamental conversion in the imperial system.
What is a stone in weight measurement?
A stone is a British unit of mass equal to 14 pounds or approximately 6.35 kilograms. It’s commonly used in the UK for measuring body weight.
How do I convert grams to ounces?
To convert grams to ounces, divide by 28.3495 (or multiply by 0.035274). For example, 100 grams equals approximately 3.53 ounces.
Related Unit Converters
All Mass Unit Conversions
Section titled “ All Mass Unit Conversions ” Gram to Kilogram (g
to kg)
Gram to Milligram (g
to mg)
Gram to Microgram (g
to ug)
Gram to Tonne (g
to tonne)
Gram to Ton (g
to ton)
Gram to Grain (g
to gr)
Gram to Dram (g
to dr)
Gram to Ounce (g
to oz)
Gram to Pound (g
to lbm)
Gram to Hundredweight (g
to cwt)
Gram to Stick (g
to stick)
Gram to Stone (g
to stone)
Gram to Nanogram (g
to ng)
Gram to Picogram (g
to pg)
Gram to Femtogram (g
to fg)
Gram to Megagram (g
to Mg)
Kilogram to Gram (kg
to g)
Kilogram to Milligram (kg
to mg)
Kilogram to Microgram (kg
to ug)
Kilogram to Tonne (kg
to tonne)
Kilogram to Ton (kg
to ton)
Kilogram to Grain (kg
to gr)
Kilogram to Dram (kg
to dr)
Kilogram to Ounce (kg
to oz)
Kilogram to Pound (kg
to lbm)
Kilogram to Hundredweight (kg
to cwt)
Kilogram to Stick (kg
to stick)
Kilogram to Stone (kg
to stone)
Kilogram to Nanogram (kg
to ng)
Kilogram to Picogram (kg
to pg)
Kilogram to Femtogram (kg
to fg)
Kilogram to Megagram (kg
to Mg)
Milligram to Gram (mg
to g)
Milligram to Kilogram (mg
to kg)
Milligram to Microgram (mg
to ug)
Milligram to Tonne (mg
to tonne)
Milligram to Ton (mg
to ton)
Milligram to Grain (mg
to gr)
Milligram to Dram (mg
to dr)
Milligram to Ounce (mg
to oz)
Milligram to Pound (mg
to lbm)
Milligram to Hundredweight (mg
to cwt)
Milligram to Stick (mg
to stick)
Milligram to Stone (mg
to stone)
Milligram to Nanogram (mg
to ng)
Milligram to Picogram (mg
to pg)
Milligram to Femtogram (mg
to fg)
Milligram to Megagram (mg
to Mg)
Microgram to Gram (ug
to g)
Microgram to Kilogram (ug
to kg)
Microgram to Milligram (ug
to mg)
Microgram to Tonne (ug
to tonne)
Microgram to Ton (ug
to ton)
Microgram to Grain (ug
to gr)
Microgram to Dram (ug
to dr)
Microgram to Ounce (ug
to oz)
Microgram to Pound (ug
to lbm)
Microgram to Hundredweight (ug
to cwt)
Microgram to Stick (ug
to stick)
Microgram to Stone (ug
to stone)
Microgram to Nanogram (ug
to ng)
Microgram to Picogram (ug
to pg)
Microgram to Femtogram (ug
to fg)
Microgram to Megagram (ug
to Mg)
Tonne to Gram (tonne
to g)
Tonne to Kilogram (tonne
to kg)
Tonne to Milligram (tonne
to mg)
Tonne to Microgram (tonne
to ug)
Tonne to Ton (tonne
to ton)
Tonne to Grain (tonne
to gr)
Tonne to Dram (tonne
to dr)
Tonne to Ounce (tonne
to oz)
Tonne to Pound (tonne
to lbm)
Tonne to Hundredweight (tonne
to cwt)
Tonne to Stick (tonne
to stick)
Tonne to Stone (tonne
to stone)
Tonne to Nanogram (tonne
to ng)
Tonne to Picogram (tonne
to pg)
Tonne to Femtogram (tonne
to fg)
Tonne to Megagram (tonne
to Mg)
Ton to Gram (ton
to g)
Ton to Kilogram (ton
to kg)
Ton to Milligram (ton
to mg)
Ton to Microgram (ton
to ug)
Ton to Tonne (ton
to tonne)
Ton to Grain (ton
to gr)
Ton to Dram (ton
to dr)
Ton to Ounce (ton
to oz)
Ton to Pound (ton
to lbm)
Ton to Hundredweight (ton
to cwt)
Ton to Stick (ton
to stick)
Ton to Stone (ton
to stone)
Ton to Nanogram (ton
to ng)
Ton to Picogram (ton
to pg)
Ton to Femtogram (ton
to fg)
Ton to Megagram (ton
to Mg)
Grain to Gram (gr
to g)
Grain to Kilogram (gr
to kg)
Grain to Milligram (gr
to mg)
Grain to Microgram (gr
to ug)
Grain to Tonne (gr
to tonne)
Grain to Ton (gr
to ton)
Grain to Dram (gr
to dr)
Grain to Ounce (gr
to oz)
Grain to Pound (gr
to lbm)
Grain to Hundredweight (gr
to cwt)
Grain to Stick (gr
to stick)
Grain to Stone (gr
to stone)
Grain to Nanogram (gr
to ng)
Grain to Picogram (gr
to pg)
Grain to Femtogram (gr
to fg)
Grain to Megagram (gr
to Mg)
Dram to Gram (dr
to g)
Dram to Kilogram (dr
to kg)
Dram to Milligram (dr
to mg)
Dram to Microgram (dr
to ug)
Dram to Tonne (dr
to tonne)
Dram to Ton (dr
to ton)
Dram to Grain (dr
to gr)
Dram to Ounce (dr
to oz)
Dram to Pound (dr
to lbm)
Dram to Hundredweight (dr
to cwt)
Dram to Stick (dr
to stick)
Dram to Stone (dr
to stone)
Dram to Nanogram (dr
to ng)
Dram to Picogram (dr
to pg)
Dram to Femtogram (dr
to fg)
Dram to Megagram (dr
to Mg)
Ounce to Gram (oz
to g)
Ounce to Kilogram (oz
to kg)
Ounce to Milligram (oz
to mg)
Ounce to Microgram (oz
to ug)
Ounce to Tonne (oz
to tonne)
Ounce to Ton (oz
to ton)
Ounce to Grain (oz
to gr)
Ounce to Dram (oz
to dr)
Ounce to Pound (oz
to lbm)
Ounce to Hundredweight (oz
to cwt)
Ounce to Stick (oz
to stick)
Ounce to Stone (oz
to stone)
Ounce to Nanogram (oz
to ng)
Ounce to Picogram (oz
to pg)
Ounce to Femtogram (oz
to fg)
Ounce to Megagram (oz
to Mg)
Pound to Gram (lbm
to g)
Pound to Kilogram (lbm
to kg)
Pound to Milligram (lbm
to mg)
Pound to Microgram (lbm
to ug)
Pound to Tonne (lbm
to tonne)
Pound to Ton (lbm
to ton)
Pound to Grain (lbm
to gr)
Pound to Dram (lbm
to dr)
Pound to Ounce (lbm
to oz)
Pound to Hundredweight (lbm
to cwt)
Pound to Stick (lbm
to stick)
Pound to Stone (lbm
to stone)
Pound to Nanogram (lbm
to ng)
Pound to Picogram (lbm
to pg)
Pound to Femtogram (lbm
to fg)
Pound to Megagram (lbm
to Mg)
Hundredweight to Gram (cwt
to g)
Hundredweight to Kilogram (cwt
to kg)
Hundredweight to Milligram (cwt
to mg)
Hundredweight to Microgram (cwt
to ug)
Hundredweight to Tonne (cwt
to tonne)
Hundredweight to Ton (cwt
to ton)
Hundredweight to Grain (cwt
to gr)
Hundredweight to Dram (cwt
to dr)
Hundredweight to Ounce (cwt
to oz)
Hundredweight to Pound (cwt
to lbm)
Hundredweight to Stick (cwt
to stick)
Hundredweight to Stone (cwt
to stone)
Hundredweight to Nanogram (cwt
to ng)
Hundredweight to Picogram (cwt
to pg)
Hundredweight to Femtogram (cwt
to fg)
Hundredweight to Megagram (cwt
to Mg)
Stick to Gram (stick
to g)
Stick to Kilogram (stick
to kg)
Stick to Milligram (stick
to mg)
Stick to Microgram (stick
to ug)
Stick to Tonne (stick
to tonne)
Stick to Ton (stick
to ton)
Stick to Grain (stick
to gr)
Stick to Dram (stick
to dr)
Stick to Ounce (stick
to oz)
Stick to Pound (stick
to lbm)
Stick to Hundredweight (stick
to cwt)
Stick to Stone (stick
to stone)
Stick to Nanogram (stick
to ng)
Stick to Picogram (stick
to pg)
Stick to Femtogram (stick
to fg)
Stick to Megagram (stick
to Mg)
Stone to Gram (stone
to g)
Stone to Kilogram (stone
to kg)
Stone to Milligram (stone
to mg)
Stone to Microgram (stone
to ug)
Stone to Tonne (stone
to tonne)
Stone to Ton (stone
to ton)
Stone to Grain (stone
to gr)
Stone to Dram (stone
to dr)
Stone to Ounce (stone
to oz)
Stone to Pound (stone
to lbm)
Stone to Hundredweight (stone
to cwt)
Stone to Stick (stone
to stick)
Stone to Nanogram (stone
to ng)
Stone to Picogram (stone
to pg)
Stone to Femtogram (stone
to fg)
Stone to Megagram (stone
to Mg)
Nanogram to Gram (ng
to g)
Nanogram to Kilogram (ng
to kg)
Nanogram to Milligram (ng
to mg)
Nanogram to Microgram (ng
to ug)
Nanogram to Tonne (ng
to tonne)
Nanogram to Ton (ng
to ton)
Nanogram to Grain (ng
to gr)
Nanogram to Dram (ng
to dr)
Nanogram to Ounce (ng
to oz)
Nanogram to Pound (ng
to lbm)
Nanogram to Hundredweight (ng
to cwt)
Nanogram to Stick (ng
to stick)
Nanogram to Stone (ng
to stone)
Nanogram to Picogram (ng
to pg)
Nanogram to Femtogram (ng
to fg)
Nanogram to Megagram (ng
to Mg)
Picogram to Gram (pg
to g)
Picogram to Kilogram (pg
to kg)
Picogram to Milligram (pg
to mg)
Picogram to Microgram (pg
to ug)
Picogram to Tonne (pg
to tonne)
Picogram to Ton (pg
to ton)
Picogram to Grain (pg
to gr)
Picogram to Dram (pg
to dr)
Picogram to Ounce (pg
to oz)
Picogram to Pound (pg
to lbm)
Picogram to Hundredweight (pg
to cwt)
Picogram to Stick (pg
to stick)
Picogram to Stone (pg
to stone)
Picogram to Nanogram (pg
to ng)
Picogram to Femtogram (pg
to fg)
Picogram to Megagram (pg
to Mg)
Femtogram to Gram (fg
to g)
Femtogram to Kilogram (fg
to kg)
Femtogram to Milligram (fg
to mg)
Femtogram to Microgram (fg
to ug)
Femtogram to Tonne (fg
to tonne)
Femtogram to Ton (fg
to ton)
Femtogram to Grain (fg
to gr)
Femtogram to Dram (fg
to dr)
Femtogram to Ounce (fg
to oz)
Femtogram to Pound (fg
to lbm)
Femtogram to Hundredweight (fg
to cwt)
Femtogram to Stick (fg
to stick)
Femtogram to Stone (fg
to stone)
Femtogram to Nanogram (fg
to ng)
Femtogram to Picogram (fg
to pg)
Femtogram to Megagram (fg
to Mg)
Megagram to Gram (Mg
to g)
Megagram to Kilogram (Mg
to kg)
Megagram to Milligram (Mg
to mg)
Megagram to Microgram (Mg
to ug)
Megagram to Tonne (Mg
to tonne)
Megagram to Ton (Mg
to ton)
Megagram to Grain (Mg
to gr)
Megagram to Dram (Mg
to dr)
Megagram to Ounce (Mg
to oz)
Megagram to Pound (Mg
to lbm)
Megagram to Hundredweight (Mg
to cwt)
Megagram to Stick (Mg
to stick)
Megagram to Stone (Mg
to stone)
Megagram to Nanogram (Mg
to ng)
Megagram to Picogram (Mg
to pg)
Megagram to Femtogram (Mg
to fg)