Liters to Grams Calculator
Convert liters to grams using substance density. Since liters measure volume and grams measure mass, you need the density of the substance to convert. 1 liter of water weighs 1000 grams, but other liquids differ. Also see grams to liters.
How to Convert Liters to Grams
- Find the density of the substance in kg/L (same as g/mL).
- Multiply the volume in liters by the density to get kilograms.
- Multiply by 1000 to convert kilograms to grams.
Formula
Grams = Liters × Density (kg/L) × 1000
Example Calculation
Convert 2 liters of milk to grams:
Density of whole milk = 1.03 kg/L
Mass = 2 L × 1.03 kg/L × 1000 = 2060 grams
Substance Density Reference Table
| Substance | Density (kg/L) | 1 L = grams |
|---|---|---|
| Water | 1 | 1000 g |
| Milk (whole) | 1.03 | 1030 g |
| Cooking Oil | 0.92 | 920 g |
| Honey | 1.42 | 1420 g |
| Gasoline | 0.75 | 750 g |
Frequently Asked Questions
How many grams is 1 liter of water?
1 liter of water weighs approximately 1000 grams (1 kg) at standard temperature and pressure.
Is 1 liter always 1000 grams?
No, only for water. 1 liter of honey weighs about 1420 grams, while 1 liter of gasoline weighs only about 750 grams.
How do I convert liters of oil to grams?
Cooking oil has a density of about 0.92 kg/L. Multiply liters by 0.92 × 1000. For example, 0.5 L of oil = 0.5 × 920 = 460 grams.
Why do I need density to convert liters to grams?
Liters measure volume (space) and grams measure mass (weight). Different substances have different masses per unit volume, so density is required to bridge the two.
How many grams is half a liter of milk?
Whole milk has a density of about 1.03 kg/L. So 0.5 L × 1.03 × 1000 = 515 grams.