Grams to Kilograms
1000 grams = 1 kilogram. Conversion runs in your browser.
Conversion result
Kilograms = grams ÷ 1000; grams = kilograms × 1000.
Primary source: NIST SP 811, Appendix B.8 conversion factors. One kilogram equals exactly 1000 grams.
Worked example: 2500 grams ÷ 1000 = 2.5 kilograms; 750 grams = 0.75 kilogram.
Common conversion values
| grams | kilograms |
|---|---|
| 1 | 0.001 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
| 2500 | 2.5 |
The table shows reference quantities; displayed results are rounded to at most 12 significant digits. Reverse conversions divide by the forward factor.
How to use this tool
Enter a quantity in grams, select the forward or reverse direction, and choose Convert. Decimal, fraction and mixed-fraction inputs are supported.
Frequently asked questions
What factor is used?
One kilogram equals exactly 1000 grams. Kilograms = grams ÷ 1000; grams = kilograms × 1000.
Can I convert in reverse?
Yes. Select the reverse direction; it uses the same exact unit definitions and reverses the factor.
What does this page calculate?
It converts between the named units. Ounces means avoirdupois mass ounces here, not fluid ounces. The result does not imply measurement accuracy.