mL to units / Worked example

1 mL to Units on a U-100 Syringe: 100 Units

1 mL x 100 = 100 U-100 markings.

The U-100 scale represents 100 markings per mL. The same conversion applies across barrel capacities. A result can be mathematically valid and still exceed a syringe's capacity. This example does not recommend an amount.

0.3 mL barrel

Exceeds capacity. No fill position is shown; this page does not suggest splitting a dose.

Syringe view0.3 mL: U-100
051015202530
Needle end1-unit marks
Illustration only. Read the plunger edge nearest the needle. Check the markings on your actual syringe.

0.5 mL barrel

Exceeds capacity. No fill position is shown; this page does not suggest splitting a dose.

Syringe view0.5 mL: U-100
05101520253035404550
Needle end1-unit marks
Illustration only. Read the plunger edge nearest the needle. Check the markings on your actual syringe.

1 mL barrel

Within the illustrated barrel capacity. Confirm the actual device markings.

Syringe view1 mL: U-100
0102030405060708090100Front edge
Needle end2-unit marks
Measurement close-up100 units
8486889092949698100Front edge

The pointer follows the exact result. A position between lines is not a marked division.

Illustration only. Read the plunger edge nearest the needle. Check the markings on your actual syringe.

Check the scale and concentration

These are U-100 volume markings. Mass in mg or mcg requires a known concentration. Biological international units require substance-specific information. Use the units and device instructions supplied with the actual product.

Open the volume calculator. For equipment information, see the Australian syringe-size guide.