Grams measure mass while milliliters measure volume. Because different ingredients have different densities, you must know the ingredient's density (g/mL) before converting. Simply divide the mass in grams by the density to get the equivalent volume in milliliters.
Grams to Milliliters Formula
mL = g ÷ density (g/mL)
For Water, the density is 0.998 g/mL, so the formula becomes:
mL = g ÷ 0.998
Example
Convert 100 g of Water to mL:
100 ÷ 0.998 = 100.2004 mL
Gram to Milliliter Conversion Table - Water
Table updates automatically when you change the ingredient above.
Grams (g)
Milliliters (mL)
10
10.02
25
25.0501
50
50.1002
100
100.2004
150
150.3006
200
200.4008
250
250.501
500
501.002
1000
1002.004
When to Convert Grams to Milliliters
You need to convert grams to milliliters when a recipe lists an ingredient by weight but you only have a measuring cup or syringe that reads in volume. This is common when scaling baking recipes or working with liquid ingredients like oils, honey, or milk.