Calculator / Reference

U-100 syringe conversion chart

A printable reference for U-100 markings and millilitres. Syringe units describe volume on this scale, not a fixed mass.

01

Enter your volume

mL
02 Match your syringe

All three use the U-100 scale: 100 units per mL.

YOUR CALCULATION On your device

A little clarity, in units.

Enter your values and select the markings on your syringe. Your result and the full arithmetic will appear here.

Syringe viewU-100
← Needle endSelect your syringe
Illustration only. Read the plunger edge nearest the needle. Check the markings on your actual syringe.

Measurement, not medical advice. Confirm your prescribed amount and how to measure it with your prescriber or pharmacist. This tool does not calculate an insulin dose or convert biological IU to mg.

No account. No tracking. Just the calculation.

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THE REFERENCE

U-100 markings to volume
MarkingsVolumeFits within capacity
5 units0.05 mL0.3, 0.5 or 1 mL
10 units0.10 mL0.3, 0.5 or 1 mL
15 units0.15 mL0.3, 0.5 or 1 mL
20 units0.20 mL0.3, 0.5 or 1 mL
25 units0.25 mL0.3, 0.5 or 1 mL
30 units0.30 mL0.3, 0.5 or 1 mL
40 units0.40 mL0.5 or 1 mL
50 units0.50 mL0.5 or 1 mL
75 units0.75 mL1 mL
100 units1.00 mL1 mL

Reading this chart

The table uses 100 U-100 markings per millilitre. It does not assign a medicine dose or a mass to any row. Only entries within the capacity of your actual syringe can fit in one barrel.

Print your own calculation

Enter the volume and actual syringe markings in the calculator, then select Print summary. The printed card includes your original entries, the result, any rounding difference, the diagram and the arithmetic. No email address is needed.

A chart cannot check your label

This reference does not apply to a different syringe scale. Check for U-100 on the packaging and barrel. If the prescription, vial and syringe use different units, have a pharmacist reconcile them rather than guessing.