The essential rule
Converting grams into milliliters requires the ingredient density. Divide the mass in grams by density in g/mL. A single conversion factor cannot cover all ingredients because their densities vary.
Always use density in g/mL.
Reference density chart
| Volume | Water | Milk | Cooking oil | Flour | Sugar |
|---|---|---|---|---|---|
| 1 mL | 1 g | 1.03 g | 0.88 g | 0.53 g | 0.84 g |
| 5 mL | 5 g | 5.15 g | 4.4 g | 2.65 g | 4.22 g |
| 10 mL | 10 g | 10.3 g | 8.8 g | 5.29 g | 8.45 g |
| 15 mL | 15 g | 15.45 g | 13.2 g | 7.94 g | 12.67 g |
| 25 mL | 25 g | 25.75 g | 22 g | 13.23 g | 21.12 g |
| 50 mL | 50 g | 51.5 g | 44 g | 26.45 g | 42.25 g |
| 100 mL | 100 g | 103 g | 88 g | 52.9 g | 84.5 g |
| 125 mL | 125 g | 128.75 g | 110 g | 66.12 g | 105.62 g |
| 150 mL | 150 g | 154.5 g | 132 g | 79.35 g | 126.75 g |
| 200 mL | 200 g | 206 g | 176 g | 105.8 g | 169 g |
| 240 mL | 240 g | 247.2 g | 211.2 g | 126.96 g | 202.8 g |
| 250 mL | 250 g | 257.5 g | 220 g | 132.25 g | 211.25 g |
| 500 mL | 500 g | 515 g | 440 g | 264.5 g | 422.5 g |
| 1000 mL | 1,000 g | 1,030 g | 880 g | 529 g | 845 g |
Step-by-step method
- Identify the ingredient or substance.
- Find its density in g/mL, taking account of temperature and packing.
- Divide the mass by density to obtain mL.
- Round to the precision justified by the input.
Example with numbers
For the other direction, reverse the operation. The calculator above supports both directions.
Avoid common errors
The reverse conversion is grams ÷ (g/mL). The unit cancellations leave mL, so always use density in the matching units. Do not substitute a nutritional concentration (for example, mg per serving) for a material density. In recipes, dry ingredients can be packed or sifted, which changes their bulk density.
Frequently asked questions
Is density always required?
Yes, unless you explicitly assume water and use a 1:1 cooking approximation.
What if the ingredient is missing?
Choose Custom ingredient and enter an appropriate positive density in g/mL.