Category · 8 units

Mass

Mass converter - convert between milligrams, grams, kilograms, tonnes, ounces, pounds, stone and US tons.

Active unit

kilograms · ≈ 100 kg (base)

All units

7 results
  • kgkilogram100
How we calculated this
Target:
Formula
mg = kg × 1,000,000
Calculation
100 × 1,000,000 = 100,000,000
Factor
× 1,000,000

Good to know

Related articles

A glowing emerald beam balance: the kilogram prototype cylinder under a glass bell jar on one pan, old weights scattering into stars on the other, against a cosmic nebula in violet and magenta
Mass

Not all pounds are equal — how we weighed the world

Three different pounds in one kingdom, a Warsaw pound and a Prussian one, a probe burned up over Mars, a jetliner out of fuel over Canada — and a platinum cylinder near Paris that kept losing weight for a century, even though by definition it weighed exactly one kilogram. This is the history of mass units and its expensive mistakes.

12 min

Popular pairs

Popular categories

Each category has its own color and dedicated converter.

See all categories →
8 units
Length
From millimeters to miles — SI and imperial units.
8 units
Mass
Grams, kilograms, pounds, ounces and tons.
8 units
Volume
Liters, milliliters, gallons and cups.
4 units
Temperature
Celsius, Fahrenheit and Kelvin.
7 units
Area
Square meters, hectares, acres and square feet.
9 units
Time
Seconds, minutes, hours, days and years.
6 units
Data (SI)
Bits and bytes in the decimal system (kB, MB, GB).
6 units
Speed
Meters per second, km/h, miles per hour and knots.