ToolCalcu

mL to Grams Converter

Milliliters measure volume and grams measure mass, so the conversion depends on density. Pick an ingredient or enter your own density to convert correctly.

Your amount

Densities are typical approximate values.

Result

Please correct the highlighted fields.
Mass in grams
249.55 g
Density used
0.9982 g/mL
Density source
Water at about 20 °C: 0.9982 g/mL (about 1.000 at 4 °C)
Mass in kilograms
0.25 kg
Mass in ounces
8.8 oz

Why mL and grams are not interchangeable

One milliliter of water weighs very close to one gram, which is why people often treat the units as equal. Other liquids do not: a milliliter of honey weighs about 1.42 g and a milliliter of oil about 0.92 g. The mass of a volume is the volume multiplied by the density.

Water is the default here at about 20 °C (0.9982 g/mL). Near 4 °C its density is almost exactly 1 g/mL. Choose Custom density to use any value, for example one taken from a product label.

Formulas used

Grams = Milliliters × Density (g/mL)
Milliliters = Grams ÷ Density (g/mL)
Ounces = Grams ÷ 28.349523125

Worked example

250 mL of water at about 20 °C (density 0.9982 g/mL):

  1. Grams = 250 × 0.9982 = 249.55
  2. Ounces = 249.55 ÷ 28.3495 = 8.80

250 mL of water ≈ 249.55 g.

Assumptions and limits

  • The liquid is treated as uniform with a single density; mixtures and foams are not modeled.
  • Densities are approximate and temperature-dependent, so results are approximate too.
  • Custom densities must be above 0 and up to 30 g/mL.

Sources and references

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