Calculation
Convert mg ⇄ mL using concentration
mg
mL
mg/mL
Latest result: —
Note: Conversion requires a known concentration in mg per mL. For pure water approximations are not appropriate for drug dosing or chemistry where density varies.
Results Table
| # | Mode | Mass (mg) | Concentration (mg/mL) | Volume (mL) | Timestamp |
|---|
mg vs mL Scatter Plot
Each point reflects a recorded entry. X-axis is mass in mg, Y-axis is volume in mL.
Formula Used
Conversion between milligrams (mg) and milliliters (mL) requires a concentration (also called strength) expressed in mg/mL.
mg → mL
Given mass m in mg and concentration C in mg/mL:
Volume (mL) = m ÷ C
mL → mg
Given volume V in mL and concentration C in mg/mL:
Mass (mg) = V × C
Important: Do not assume density of water for solutions unless explicitly appropriate. Always verify the correct concentration for your specific liquid or medication.
How to Use This Calculator
- Select mg → mL or mL → mg under Mode.
- Enter the mass or volume and the solution concentration (mg/mL).
- Choose the desired decimal places for rounding.
- Click Calculate and add row. The entry appears in the results table.
- Repeat to build a dataset. Export your entries with CSV or PDF.
- Review the dynamic scatter plot to see the mg to mL relationship across entries.
Example Data
| Mode | Mass (mg) | Concentration (mg/mL) | Volume (mL) | Notes |
|---|---|---|---|---|
| mg → mL | 250 | 50 | 5 | Typical oral solution example |
| mg → mL | 1200 | 100 | 12 | High-strength preparation |
| mg → mL | 37.5 | 12.5 | 3 | Low-dose scenario |
| mL → mg | — | 40 | 2.5 | Reverse direction example (expect 100 mg) |
FAQs
Because mg measures mass while mL measures volume. The link between them is concentration (mg per mL). Without concentration, the conversion is undefined.
Only for pure water near room temperature. Solutions and medications often have different densities and labeled strengths. Always use the specified mg/mL concentration.
Use a decimal setting that matches your measuring equipment and reporting requirements. More decimal places do not imply more accuracy if your inputs are uncertain.
It can assist with calculations, but dosing must be verified by a qualified professional using the official product labeling and institutional protocols.
% w/v means grams per 100 mL. For example, 1% w/v = 1 g per 100 mL = 10 mg/mL. Convert appropriately before using the formulas here.
Convert to mg/mL first. Examples: 1 g/L = 1 mg/mL ÷ 1000 = 0.001 mg/mL. 1 g/mL = 1000 mg/mL. Then apply the formulas provided above.