How to convert kilograms to grams
To convert a measurement in kilograms to grams, multiply the value by 1,000. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 kg to grams: 5 × 1,000 = 5,000 g.
What is a kilogram?
A kilogram is the SI base unit of mass, equal to 1,000 grams or approximately 2.205 pounds. Originally defined in 1795 as the mass of one liter of water, the kilogram was fixed by a platinum-iridium cylinder from 1889 until 2019, when it was redefined in terms of the Planck constant. It is the only SI base unit whose name carries a prefix.
Common uses of kilograms include: Body weight in most countries; Grocery and produce pricing (price per kg); Shipping and freight weight; Scientific and laboratory mass measurements.
What is a gram?
A gram is a metric unit of mass equal to one thousandth of a kilogram (0.001 kg) or about 0.035 ounces. Defined in 1795 as the mass of one cubic centimeter of water at the temperature of melting ice. The gram is the base for many everyday metric masses and the reference point for nutritional labeling worldwide.
Common uses of grams include: Cooking and recipe ingredient quantities; Nutrition labels and food portions; Postage and small parcel weight; Jewelry and precious metal weighing.
Kilograms to grams worked examples
Here are some common values converted:
1 kg = 1,000 g 5 kg = 5,000 g 10 kg = 10,000 g 50 kg = 50,000 g 100 kg = 100,000 g
Frequently asked questions
How many grams are in one kilogram?
One kilogram (kg) equals 1,000 grams (g). Multiply any value in kilograms by 1,000 to convert to grams.
How do I convert kilograms to grams?
Multiply the value in kilograms by 1,000. For example, 5 kg × 1,000 = 5,000 g.
How do I convert grams to kilograms?
Multiply the value in grams by 0.001, or divide by 1,000. Use the swap button on the converter above to reverse the direction.
Is the kilogram to gram conversion exact?
Yes. Since 1959 the international pound is defined as exactly 0.45359237 kg, so all weight conversions between metric and avoirdupois units use exact factors.
What is the formula for kilograms to grams?
The formula is: g = kg × 1,000. This comes from the definition of both units relative to the kilogram.