Water mL to Grams Converter
Quick Reference Table
| Milliliters (mL) | Grams |
|---|---|
| 5 mL | 5 g |
| 10 mL | 10 g |
| 25 mL | 25 g |
| 50 mL | 50 g |
| 100 mL | 100 g |
| 150 mL | 150 g |
| 200 mL | 200 g |
| 250 mL | 250 g |
| 500 mL | 500 g |
| 1000 mL | 1000 g |
Water has a density of exactly 1 gram per milliliter at 4°C — meaning 1 mL of water weighs 1 gram. This makes water the simplest liquid to convert between volume and weight: the numbers are always identical.
At room temperature (20°C), water's density is approximately 0.998 g/mL — still effectively 1:1 for all practical purposes. For cooking, chemistry, and everyday use, 1 mL of water always equals 1 gram.
This 1:1 relationship is specific to water. Other liquids have different densities: 1 mL of honey weighs about 1.4 g, 1 mL of vegetable oil weighs about 0.92 g, and 1 mL of milk weighs approximately 1.03 g.
Frequently Asked Questions
- Yes — at 4°C, water has a density of exactly 1 g/mL. At room temperature (20°C), it is 0.998 g/mL, which rounds to 1 g for all practical purposes.
- 100 mL of water weighs 100 grams.
- 250 mL of water weighs 250 grams. One US cup is 236 mL, so 1 cup of water ≈ 236 grams.
- Nearly — at 100°C, water's density drops to 0.958 g/mL, so 1 mL weighs 0.958 g. For cooking, this difference is negligible.
- Only for water. Other liquids have different densities: milk ≈ 1.03 g/mL, vegetable oil ≈ 0.92 g/mL, honey ≈ 1.4 g/mL.