Milliliters measure volume and grams measure weight — converting between them depends on the liquid’s density, not a fixed ratio.
How it works
Multiplying milliliters by the liquid’s density (in grams per mL) gives grams. The default density is water’s (1 g/mL), adjustable for any other liquid.
What this does not include
This does not include a built-in density lookup for specific ingredients — check a reliable source for the exact density of whatever liquid you’re measuring if it isn’t water.
How to use this calculator
- Enter the milliliters and the liquid’s density (defaults to water).
Frequently asked questions
Why does water default to exactly 1 g/mL?
Because 1 milliliter of water weighs almost exactly 1 gram at standard conditions — a widely used, convenient reference point.
Is milk about the same density as water?
Close — milk is slightly denser than water (roughly 1.03 g/mL), so using the water default for milk introduces only a small error.
What about oil?
Cooking oils are typically less dense than water (roughly 0.92 g/mL), so a milliliter of oil weighs noticeably less than a milliliter of water.
