To convert grams to kilograms, divide by 1000. So 500 g = 0.5 kg and 1500 g = 1.5 kg. This is an exact conversion - just move the decimal point three places to the left.
- Exact: 1 g = 0.001 kg - defined, not approximate.
- Move the decimal point 3 places to the left to go from g to kg.
- 500 g = 0.5 kg. 1000 g = 1 kg. 2500 g = 2.5 kg.
- To convert kg back to grams, multiply by 1000 (move decimal 3 places right).
How to Use This Converter
Type any grams value in the g field and the kg result appears instantly. You can also type in the kg field to convert back to grams. The conversion is exact - divide by 1000.
How Do You Convert Grams to Kilograms?
Divide grams by 1000. The prefix "kilo" means 1000 in the SI system, so 1 kilogram = 1000 grams by definition. There is no rounding involved.
$$\text{kg} = \text{g} \div 1000$$
Worked examples: 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.
Shortcut: move the decimal point three places to the left. For 3750 g: → 3.750 kg.
How Do You Convert Kilograms to Grams?
Multiply kilograms by 1000. See the dedicated kilograms to grams converter for a kg-first reference table.
$$\text{g} = \text{kg} \times 1000$$
Worked examples: 0.5 kg = 500 g. 1.5 kg = 1500 g. 2 kg = 2000 g.
Grams to Kilograms Reference Table
| Grams (g) | Kilograms (kg) | Common context |
|---|---|---|
| 1 g | 0.001 kg | - |
| 10 g | 0.01 kg | - |
| 100 g | 0.1 kg | Standard food serving |
| 250 g | 0.25 kg | Quarter kilogram |
| 500 g | 0.5 kg | Half kilogram |
| 750 g | 0.75 kg | - |
| 1000 g | 1 kg | Standard kitchen unit |
| 1500 g | 1.5 kg | - |
| 2000 g | 2 kg | - |
| 5000 g | 5 kg | Flour / sugar bag |
When Do You Need to Convert Grams to kg?
- Cooking and baking - recipes list ingredients in grams; comparing against bulk purchases sold in kg.
- Nutrition tracking - daily intake is tracked in grams; food packaging shows kg for larger items.
- Science and chemistry - lab measurements in grams need to be reported in kg for some standards.
- Shipping - parcel weight APIs may require kg; you have the weight in grams from a kitchen scale.
Frequently Asked Questions
How many kg is 500 grams?
Exactly 0.5 kg. 500 ÷ 1000 = 0.5. This is half a kilogram - a common quantity for packaged foods.
How do you convert grams to kg?
Divide by 1000, or move the decimal three places left. For 2500 g: 2500 ÷ 1000 = 2.5 kg. No rounding - it is exact.
How many kg is 1000 grams?
Exactly 1 kg. This is the SI definition of the kilogram - it equals 1000 grams.