Tirzepatide Dose Calculator

Quick Dose Calculator

Enter concentration and dose — get 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 mg5 mg7.5 mg10 mg12.5 mg15 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 vial label

Type your prescribed dose

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 ⚠ verify

⚠ Verify your vial size.

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 prescribed dose. Never change your dose without speaking to your provider first.

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