Convert milligrams to milliliters in one click. Our 1 Mg To ML Calculator reverses the math for mL to mg too. Built for pharmacists, bakers, chemists, DIY-e-liquid mixers, and home brewers who need a water-density baseline (1 000 mg/mL ≈ 1 g/cm³) but can also lock in custom densities for ethanol, PG, VG, milk, mercury, or any liquid. No sign-up, 100 % accurate, mobile-first, and Core-Web-Vitals fast.
1 Mg to ML Calculator – Mg To Ml Conversion Calculator
The mg to mL Calculator is a simple yet powerful tool that helps you accurately convert weight (in milligrams) into volume (in milliliters) — and vice versa. This is especially useful for liquids with known densities, such as water, milk, cooking oil, and even medicines. By entering just one value and knowing the density of the substance, you can quickly find the equivalent amount in the other unit.
Our Live Mg To Ml Calculator
Enter the weight in milligrams below to calculate the volume in milliliters.
Milligrams (mg) measure mass, while milliliters (mL) measure volume — so they are different physical quantities. To convert between them, you need the density of the substance, usually given in mg/mL or g/mL. For example, water has a density of 1000 mg/mL, meaning 1 milliliter equals 1000 milligrams. With this, the formula for converting mg to mL is:
mL = mg ÷ density
If the density is in g/mL, multiply it by 1000 first to convert it into mg/mL. Reversing the process, the formula for mL to mg conversion is:
mg = mL × density

How The Mg To ML Calculator Works
- Select the liquid or substance (water, milk, oil, medication, or custom density).
- Enter your known value — either in milligrams or milliliters.
- The Calculator instantly displays the converted result in the chosen unit.
This tool is ideal for cooking, baking, chemistry, and liquid medicine dosage calculations. For example:
- 5000 mg of water ÷ 1000 = 5 mL
- 25 mL of cooking oil × 916 mg/mL = 22,900 mg
Why Density Matters
The mg to mL conversion depends entirely on the liquid’s density. While water’s density makes the math easy, other substances differ:
- Water ≈ 1000 mg/mL
- Milk ≈ 1035 mg/mL
- Cooking oil ≈ 916 mg/mL
These variations explain why mg to mL or mL to mg conversions are not always straightforward.Also you can check ml to oz converter here.
Conversion Table for Common Liquids
Weight (mg) | Water (mL) | Milk (mL) | Cooking Oil (mL) |
---|---|---|---|
10 mg | 0.01 mL | 0.0097 mL | 0.0114 mL |
50 mg | 0.05 mL | 0.0485 mL | 0.0568 mL |
100 mg | 0.1 mL | 0.0971 mL | 0.1136 mL |
250 mg | 0.25 mL | 0.2427 mL | 0.2841 mL |
500 mg | 0.5 mL | 0.4854 mL | 0.5682 mL |
Faqs
How Many 100 Mg To Ml?
Divide the number of milligrams by the density in mg/mL. For water, divide by 1000.
How Many Ml Is 20 Mg?
20 mg of water = 0.02 mL.
Because the density of water is 1 000 mg/mL (1 g/cm³), you simply slide the decimal three places left: 20 mg → 0.020 g → 0.02 mL.
1000 Mg To ML Calculator: How much liquid is 1 000 milligrams?
1 000 mg = 1 mL when the liquid is water (density 1 g/cm³).
Our 1000 mg to mL Calculator locks onto that 1:1 water-density ratio, then lets you toggle density for other substances—ethanol, PG, VG, milk, mercury—so you get an exact milliliter reading every time
How Many Mg Are In 1 mL?
1 mL of water = 1 000 mg because water’s density is 1 g/cm³ (1 000 mg/mL).
For any other liquid—medicine, oil, ethanol, PG, VG—plug the exact density into our Mg To ML Calculator to see how many milligrams fit in one milliliter instantly.