Grams to Kilograms Converter
Convert grams to kilograms instantly. Free online g to kg calculator with common conversion values and formula.
Formula
kg = grams ÷ 1000
Common Conversions
How to Convert Grams to Kilograms
1000 grams = 1 kilogram. Divide grams by 1000 (or move the decimal point three places left) to get kg. So 2,500 g = 2.5 kg. The cleanest possible conversion - just powers of ten, no decimal factors to remember.
This conversion is more about unit preference than calculation. Most recipes and shopping show one or the other based on quantity: under 1 kg usually shown in grams (250 g flour, 500 g mince), over 1 kg usually in kg (2 kg potatoes, 5 kg dog food). Both are SI-compliant and equivalent.
Common Grams to Kilograms Conversions
| Grams | Kilograms |
|---|---|
| 100 g | 0.1 kg |
| 250 g | 0.25 kg |
| 500 g | 0.5 kg |
| 750 g | 0.75 kg |
| 1000 g | 1 kg |
| 1500 g | 1.5 kg |
| 2500 g | 2.5 kg |
| 5000 g | 5 kg |
Frequently Asked Questions
Why are some weights in grams and others in kg?
Convenience. Sub-1000 weights are cleaner in grams (250 g vs 0.25 kg). Above 1000, kg is cleaner (2.5 kg vs 2,500 g). Both are correct; the choice is just readability for the typical use case.
Can I have decimal grams?
Yes - lab measurements, jewellery (0.5 g of gold) and pharmaceutical doses use decimal grams or smaller units (milligrams, where 1 g = 1000 mg). Everyday cooking and shopping rarely needs sub-gram precision.
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