Kilogram (kg)
SI base unit of mass, defined by fixing the Planck constant h = 6.62607015e-34 J·s.
What is a kilogram?
- Symbol
- kg
- Quantity
- Weight & Mass
- Unit system
- SI
- Definition
- SI base unit of mass, defined by fixing the Planck constant h = 6.62607015e-34 J·s.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
The SI base unit of mass. Used for body weight, groceries, luggage limits and most scientific and industrial work.
Kilogram in other weight & mass units
- 1 kg = 1000000000 µgMicrogram
- 1 kg = 1000000 mgMilligram
- 1 kg = 1000 gGram
- 1 kg = 0.001 tTonne (metric ton)
- 1 kg = 5000 ctCarat (metric)
- 1 kg ≈ 15432.35835 grGrain
- 1 kg ≈ 35.27396195 ozKilogram to Ounce converter
- 1 kg ≈ 2.204622622 lbKilogram to Pound converter
- 1 kg ≈ 0.001102311311 short tnShort ton (US ton)
- 1 kg ≈ 0.0009842065276 long tnLong ton (UK ton)
Kilogram quick reference
| Kilogram | Ounce | Pound | Microgram |
|---|---|---|---|
| 1 kg | ≈ 35.27396195 oz | ≈ 2.204622622 lb | = 1000000000 µg |
| 10 kg | ≈ 352.7396195 oz | ≈ 22.04622622 lb | = 10000000000 µg |
| 100 kg | ≈ 3527.396195 oz | ≈ 220.4622622 lb | = 100000000000 µg |
| 1000 kg | ≈ 35273.96195 oz | ≈ 2204.622622 lb | = 1000000000000 µg |
Where the kilogram fits
The next smaller weight & mass unit is the pound (lb). 1 kg ≈ 2.204622622 lb, and 1 lb = 0.45359237 kg.
The next larger weight & mass unit is the short ton (short tn). 1 kg ≈ 0.001102311311 short tn, and 1 short tn = 907.18474 kg.
Frequently asked questions
- How many ounces are in one kilogram?
- One kilogram ≈ 35.27396195 oz (ounces).
- How many pounds are in one kilogram?
- One kilogram ≈ 2.204622622 lb (pounds).
- How many micrograms are in one kilogram?
- One kilogram = 1000000000 µg (micrograms).