Milliliters to Grams Converter
Convert any volume in milliliters (mL) to mass in grams (g). Select your substance for accurate density-based conversion.
mL ↔ mg Converter
Select a substance, enter your value, and get an instant conversion.
Watch Your Conversion Come Alive
This diagram reacts in real-time to the calculator above. Change the volume, substance, or density and watch the beaker, density wheel, and scale respond instantly.
How to Convert mL to Grams
Converting milliliters to grams requires knowing the density of the substance. Since mL measures volume and grams measure mass, density bridges the two.
The Formula
Step-by-Step Example
Converting 250 mL of honey to grams:
- Identify the density of honey: 1.420 g/mL
- Multiply: 250 × 1.420 = 355 g
So 250 mL of honey = 355 grams.
When Is This Useful?
- Cooking & baking — When a recipe lists ingredients in mL but your scale measures grams.
- Science labs — When preparing solutions that require mass from volumetric data.
- Nutrition — When converting liquid serving sizes to gram-based nutritional data.
- Pharmacy — When calculating drug dosages from liquid volumes.
Conversion Tables
Quick reference tables for common mL to mg conversions by substance.
Water
Density: 1.000 g/mL| mL | mg |
|---|---|
| 1 mL | 1,000 mg |
| 5 mL | 5,000 mg |
| 10 mL | 10,000 mg |
| 25 mL | 25,000 mg |
| 50 mL | 50,000 mg |
| 100 mL | 100,000 mg |
| 250 mL | 250,000 mg |
| 500 mL | 500,000 mg |
Milk (whole)
Density: 1.030 g/mL| mL | mg |
|---|---|
| 1 mL | 1,030 mg |
| 5 mL | 5,150 mg |
| 10 mL | 10,300 mg |
| 25 mL | 25,750 mg |
| 50 mL | 51,500 mg |
| 100 mL | 103,000 mg |
| 250 mL | 257,500 mg |
| 500 mL | 515,000 mg |
Honey
Density: 1.420 g/mL| mL | mg |
|---|---|
| 1 mL | 1,420 mg |
| 5 mL | 7,100 mg |
| 10 mL | 14,200 mg |
| 25 mL | 35,500 mg |
| 50 mL | 71,000 mg |
| 100 mL | 142,000 mg |
| 250 mL | 355,000 mg |
| 500 mL | 710,000 mg |
Olive Oil
Density: 0.918 g/mL| mL | mg |
|---|---|
| 1 mL | 918 mg |
| 5 mL | 4,590 mg |
| 10 mL | 9,180 mg |
| 25 mL | 22,950 mg |
| 50 mL | 45,900 mg |
| 100 mL | 91,800 mg |
| 250 mL | 229,500 mg |
| 500 mL | 459,000 mg |
Flour
Density: 0.593 g/mL| mL | mg |
|---|---|
| 1 mL | 593 mg |
| 5 mL | 2,965 mg |
| 10 mL | 5,930 mg |
| 25 mL | 14,825 mg |
| 50 mL | 29,650 mg |
| 100 mL | 59,300 mg |
| 250 mL | 148,250 mg |
| 500 mL | 296,500 mg |
Sugar
Density: 0.845 g/mL| mL | mg |
|---|---|
| 1 mL | 845 mg |
| 5 mL | 4,225 mg |
| 10 mL | 8,450 mg |
| 25 mL | 21,125 mg |
| 50 mL | 42,250 mg |
| 100 mL | 84,500 mg |
| 250 mL | 211,250 mg |
| 500 mL | 422,500 mg |
Alcohol (Ethanol)
Density: 0.789 g/mL| mL | mg |
|---|---|
| 1 mL | 789 mg |
| 5 mL | 3,945 mg |
| 10 mL | 7,890 mg |
| 25 mL | 19,725 mg |
| 50 mL | 39,450 mg |
| 100 mL | 78,900 mg |
| 250 mL | 197,250 mg |
| 500 mL | 394,500 mg |
Coconut Oil
Density: 0.880 g/mL| mL | mg |
|---|---|
| 1 mL | 880 mg |
| 5 mL | 4,400 mg |
| 10 mL | 8,800 mg |
| 25 mL | 22,000 mg |
| 50 mL | 44,000 mg |
| 100 mL | 88,000 mg |
| 250 mL | 220,000 mg |
| 500 mL | 440,000 mg |
Maple Syrup
Density: 1.330 g/mL| mL | mg |
|---|---|
| 1 mL | 1,330 mg |
| 5 mL | 6,650 mg |
| 10 mL | 13,300 mg |
| 25 mL | 33,250 mg |
| 50 mL | 66,500 mg |
| 100 mL | 133,000 mg |
| 250 mL | 332,500 mg |
| 500 mL | 665,000 mg |
Mercury
Density: 13.534 g/mL| mL | mg |
|---|---|
| 1 mL | 13,534 mg |
| 5 mL | 67,670 mg |
| 10 mL | 135,340 mg |
| 25 mL | 338,350 mg |
| 50 mL | 676,700 mg |
| 100 mL | 1,353,400 mg |
| 250 mL | 3,383,500 mg |
| 500 mL | 6,767,000 mg |
Conversion Tools
Choose the right converter for your needs.
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Liquid Density Lookup
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Normality Calculator
Calculate normality (N) from molarity, equivalent weight, and volume for chemistry.
mL to Grams FAQ
Common questions about converting milliliters to grams.
Only for water at standard conditions (4 °C, 1 atm). For every other substance the ratio depends on its density. For example, 1 mL of honey ≈ 1.42 g, while 1 mL of olive oil ≈ 0.92 g.
The formula is: grams = mL × density (g/mL). Simply multiply the volume in milliliters by the substance's density to get the mass in grams.
Look up the density of your ingredient (e.g., flour is about 0.593 g/mL, sugar is about 0.845 g/mL). Then multiply your mL measurement by that density. For example, 250 mL of flour = 250 × 0.593 ≈ 148 grams.
Because density varies between substances. Density is how much mass is packed into a given volume. Heavier liquids like honey (1.42 g/mL) weigh more per mL than lighter ones like alcohol (0.789 g/mL).
Whole milk has a density of about 1.030 g/mL, so 100 mL of milk = 100 × 1.030 = 103 grams.