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Gram Converters

Convert grams to kilograms, milligrams, micrograms, pounds, ounces, US short tons, metric tons, grains and carats.

What this tool does

Convert grams to kilograms, milligrams, micrograms, pounds, ounces, US short tons, metric tons, grains and carats. Type an amount in grams, choose the units, and the tool converts it to kilograms. It offers 10 mass units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one from 10 options, including Gram, Kilogram, Milligram, Microgram, Pound (avoirdupois), Ounce (avoirdupois). Starts as Gram.
  • To: Choose one of the same 10 units as "From". Starts as Kilogram.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from grams to kilograms:

  • 1 g = 0.001 kg
  • 5 g = 0.005 kg
  • 10 g = 0.01 kg
  • 50 g = 0.05 kg
  • 100 g = 0.1 kg

Multiply the number of grams by 0.001 to get kilograms. Both units are exact definitions, so 0.001 is the exact factor: 1 g = 0.001 kg.

Sources: Gram: SI Brochure, 9th edition (2019). Kilogram: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes).

Limitations

  • Converts mass units only. It does not convert between mass and volume or energy, which needs a density or other second value.

FAQs

Q: How many grams are in a kilogram?
A: One kilogram is exactly 1000 grams.
Q: Which ton does this page use?
A: The list has two: the short ton (US, 2000 pounds) and the metric ton or tonne (1000 kilograms). They are labeled so you can tell them apart.
Q: Which ounce is used?
A: The ounce here is the avoirdupois ounce (the everyday ounce), not the troy ounce.

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