Mass and Weight · Unit Converter

Convert Gigagram to Kilogram

Convert gigagrams to kilograms instantly. 1 gigagram = 1000000 kilogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Kilogram to Gigagram converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Metric / SI

Gigagram

What is a gigagram?

A gigagram (Gg) equals 10^6 kilograms, the same as 1,000 metric tons.

Origin of the gigagram

From the SI prefix 'giga-' (from Greek 'gigas', giant).

Where it is used

Bulk commodity, emissions, and freight accounting.

When and where it was developed

The giga- prefix entered the SI in 1960.

Metric / SI

Kilogram

What is a kilogram?

The kilogram (kg) is the SI base unit of mass, defined by fixing the Planck constant h at 6.62607015E-34 J s.

Origin of the kilogram

From Greek 'khilioi' (thousand) plus 'gramma' (small weight).

Where it is used

The worldwide base unit of mass in science, commerce, and everyday life.

When and where it was developed

Adopted in 1795; redefined through the Planck constant on 20 May 2019.

Gigagram to Kilogram conversion formula

The relationship between gigagrams and kilograms:

1 Gg = 1000000 kg
1 kg = 1e-6 Gg

To convert gigagrams to kilograms, multiply the value in gigagrams by 1000000. To reverse, multiply kilograms by 1e-6.

How to use this converter

Type a value into the calculator. The result in kilograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Kilogram to Gigagram converter for the reverse direction.

Step-by-step: convert gigagrams to kilograms

  1. Write down the value in gigagrams (Gg).
  2. Multiply that value by the factor 1000000.
  3. The product is the equivalent value in kilograms (kg).
  4. To reverse, multiply the kilogram value by 1e-6.

Worked examples

Example 1 — Convert 1 Gg to kg:
1 × 1000000 = 1000000 kg

Example 2 — Convert 100 Gg to kg:
100 × 1000000 = 1e+8 kg

Gigagram to Kilogram conversion table

Standard reference values for converting gigagrams to kilograms:

Gigagram [Gg]Kilogram [kg]
0.0110000
0.1100000
11000000
22000000
33000000
44000000
55000000
101e+7
202e+7
303e+7
404e+7
505e+7
1001e+8
5005e+8
10001e+9

Frequently asked questions

How many kilograms is 1 gigagram?
1 gigagram equals 1000000 kilogram.
How do I convert gigagrams to kilograms?
Multiply the value in gigagrams by 1000000 to get kilograms.
How do I convert kilograms back to gigagrams?
Multiply the value in kilograms by 1e-6, or use the Kilogram to Gigagram converter.
How many kilograms is 100 gigagrams?
100 gigagrams equals 1e+8 kilograms, because 100 × 1000000 = 1e+8.

Convert Gigagram to other weight units

Show all Gigagram conversions
Metric / SI (17 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Force / Engineering (5 units)

Sources & references

Conversion factor (1 Gg = 1000000 kg) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.