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Free tool · Tirzepatide

Tirzepatide units calculator by SoftMaxx AI

Units = your prescribed dose in mg ÷ the vial’s mg per mL × 100. Your prescriber sets your dose; this converts it, both ways, and puts dates on the Zepbound label’s escalation table.

Math only · Nothing you type leaves your browser · For adults 18+ · Updated 2026-09-30

Units depend on your vial’s concentration, not on tirzepatide. On a U-100 syringe, 1 unit = 0.01 mL.

units = dose (mg) ÷ concentration (mg per mL) × 100

Arithmetic example: at 2.5 mg per mL, 0.25 mg is 0.1 mL = 10 units; at 10 mg per mL the same 10 units hold 1 mg, four times as much. That is why a unit count from a forum or a different pharmacy means nothing without the concentration.

Brand Zepbound pens and vials state each dose in mg and mL (single-dose 2.5 mg/0.5 mL up to 15 mg/0.5 mL; multi-dose vials give four 0.6 mL doses). The label tells vial users to pick a syringe that can measure a 0.5 mL or 0.6 mL dose. Units come up with compounded vials, so they depend on that vial’s printed concentration.

Units for your prescribed tirzepatide dose

Type the dose your prescriber set and the concentration printed on your vial (mg per mL).

If the label says, for example, “10 mg/4 mL”, that is 10 ÷ 4 = 2.5 mg per mL.
Your syringe
Smallest marking on it

This calculator does math on the numbers you type. It does not know what you have or whether any amount is right for you, and it never suggests a dose. Check the result with your pharmacist or prescriber.

What dose is in a number of units

This calculator does math on the numbers you type. It does not know what you have or whether any amount is right for you, and it never suggests a dose. Check the result with your pharmacist or prescriber.

Zepbound label escalation calendar

Your prescriber sets your dose. This puts dates on the escalation table printed in the FDA label for Zepbound, so you can see when a label step would fall. This calendar is the Zepbound label’s. Mounjaro and compounded products follow other instructions: your prescriber’s.

After 4 weeks, increase the dosage to 5 mg injected subcutaneously once weekly. The dosage may be increased in 2.5 mg increments, after at least 4 weeks on the current dose.Zepbound prescribing information, §2.1, DailyMed

Missed a dose? What the Zepbound label says

For example 30 or 100.

When in doubt, ask your pharmacist or prescriber before your next dose.

Mixing a vial yourself? Use the reconstitution calculator. Want the half-life picture? See the relative-level chart.

About this tool

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