Units to mL Calculator
On a U-100 insulin syringe, 100 units equals 1 mL, so 1 unit is 0.01 mL. Convert either way below, or turn a dose in mg or mcg into units with the dose calculator underneath.
Convert units to mL
Type in either box. 1 unit = 0.01 mL on 30, 50, and 100-unit insulin syringes alike.
| Units | mL |
|---|---|
| 1 unit | 0.01 mL |
| 5 units | 0.05 mL |
| 10 units | 0.1 mL |
| 20 units | 0.2 mL |
| 25 units | 0.25 mL |
| 30 units | 0.3 mL |
| 40 units | 0.4 mL |
| 50 units | 0.5 mL |
| 60 units | 0.6 mL |
| 70 units | 0.7 mL |
| 75 units | 0.75 mL |
| 80 units | 0.8 mL |
| 90 units | 0.9 mL |
| 100 units | 1 mL |
Units to draw for a mg or mcg dose
Printed on the vial label or the product listing.
How it works
- 1 / 4Type units to see mL, or mL to see units. 1 unit is 0.01 mL on any U-100 insulin syringe.
- 2 / 4For a dose in mg or mcg, enter your vial strength in the dose calculator.
- 3 / 4Enter your target dose and choose a 100-unit (1 mL) or 30-unit (0.3 mL) syringe.
- 4 / 4Read the exact units to draw, marked against your syringe.
Questions
How many units are in 1 mL?
100. Insulin syringes are U-100, meaning 100 units per mL. A 1 mL syringe holds 100 units, a 0.5 mL syringe holds 50, and a 0.3 mL syringe holds 30.
How many mL is one unit?
0.01 mL. So 10 units is 0.1 mL, 25 units is 0.25 mL, 30 units is 0.3 mL, and 50 units is 0.5 mL.
How many units is 1 mg?
It depends on the concentration of what's in the vial. Units = mg divided by concentration (mg/mL), times 100. At 10 mg/mL, 1 mg is 10 units. At 5 mg/mL, 1 mg is 20 units. At 2.5 mg/mL, 1 mg is 40 units. The dose calculator on this page works it out from your vial strength and BAC water.
Do 30-unit and 50-unit syringes use the same conversion?
Yes. All insulin syringes use the same U-100 calibration, so a unit is 0.01 mL on every size. Smaller syringes just hold less and have finer markings, which makes small doses easier to read.
What if my dose is more units than my syringe holds?
The calculator flags it when the draw exceeds your syringe's capacity. You can either add more bacteriostatic water to lower the concentration, or split the dose across two draws. Adding more water means more volume per dose, which puts the draw back within range.
Related calculators & guides
- CalculatorPeptide Dose Calculator: Units & Doses Per VialAlready mixed your vial? Enter the mg, the BAC water you added, your dose, and syringe size to get the units to draw and doses per vial.
- CalculatorPeptide Reconstitution CalculatorHow much BAC water to add and how many units to draw, one step at a time. The full mixing calculator.
- GuideInjection Needle Size Chart: SubQ vs IM by DrugNeedle gauge and length for SubQ vs IM injections — GLP-1, TRT, peptides, and B12. A quick-reference chart for what size needle to use for each medication.
- GuideHow to Reconstitute Peptides: Step-by-Step Mixing GuideHow to reconstitute peptides correctly: choosing your bacteriostatic water volume, working out dosage math, mixing without denaturing, and storing the reconstituted vial.
This calculator is for informational purposes. Consult your prescribing provider for medical advice specific to your protocol.