Tirzepatide Dose Calculator — Convert mg to Units

Tirzepatide Dose Calculator — Ondra Health

Quick Dose Calculator

Enter your concentration and dose — get your units instantly.

Your Tirzepatide Details

Vial concentration (mg/mL)

Check your vial label. e.g. 72mg Vial ÷ 4mL = 18 mg/mL

Prescribed dose (mg)

2.5 mg 5 mg 7.5 mg 10 mg 12.5 mg 15 mg

Syringe

Formula

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

Your Injection Amount

Enter concentration and dose to calculate

Enter mg/mL from your vial label

Select or type your prescribed dose

Your units and mL appear here

Reference only. Always follow your provider's exact dosing instructions. Never change your dose without approval.

Quick Reference — Common Concentrations

Dose	5 mg/mL	10 mg/mL	18 mg/mL	20 mg/mL	30 mg/mL	50 mg/mL
2.5 mg	50u / 0.50mL	25u / 0.25mL	14u / 0.14mL	13u / 0.13mL	8u / 0.08mL	5u / 0.05mL
5 mg	100u / 1.0mL	50u / 0.50mL	28u / 0.28mL	25u / 0.25mL	17u / 0.17mL	10u / 0.10mL
7.5 mg	150u / 1.5mL	75u / 0.75mL	42u / 0.42mL	38u / 0.38mL	25u / 0.25mL	15u / 0.15mL
10 mg	200u / 2.0mL	100u / 1.0mL	56u / 0.56mL	50u / 0.50mL	33u / 0.33mL	20u / 0.20mL
12.5 mg	250u / 2.5mL	125u / 1.25mL	69u / 0.69mL	63u / 0.63mL	42u / 0.42mL	25u / 0.25mL
15 mg	300u / 3.0mL	150u / 1.5mL	83u / 0.83mL	75u / 0.75mL	50u / 0.50mL	30u / 0.30mL

Advanced Calculator

Paste your prescription, auto-fill fields, and calculate shipment totals.

For informational purposes only. Not medical advice. Always follow your pharmacy and provider instructions.

Already have dosing instructions?

Auto-fill ↓

Paste your prescription text — we'll fill in the fields for you.

Select which vial to display

Each injection

Strength

mg/mL

Units to inject

units

Dose per injection

Each shipment

Vial volume

Number of vials

vials

Injections per vial

—injections

Total available injections

—injections

For informational use only. Always confirm with your provider.

Tirzepatide Dosing — Common Questions

How do I find the concentration on my vial?

Your label lists it as mg/mL. If it shows total mg (e.g. "72mg Vial, 4mL"), divide: 72 ÷ 4 = 18 mg/mL. Common compounded concentrations are 10, 18, 20, and 30 mg/mL.

What's the standard tirzepatide titration schedule?

Most providers start at 2.5mg weekly, increasing every 4 weeks: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg max. Your provider sets your schedule.

Which section should I use?

Use Section 1 for a quick conversion when you know your mg/mL and dose. Use Section 2 to auto-fill from prescription text or calculate how many doses your vial contains.

Can I adjust my dose based on these results?

No — these tools only help measure a dose already prescribed. Never change your dose without speaking to your provider first.

*For informational purposes only. Not medical advice. All dosing decisions must be made by your licensed healthcare provider. Always verify your vial label. Compounded medications are not FDA-approved.