---
title: "GLP-1 mg to Units Calculator — U-100 Syringe | GLPMate"
url: https://glpmate.me/tools/units-calculator
language: en
description: "Convert compounded GLP-1 doses from mg to insulin-syringe units (U-100) and back. Free calculators for semaglutide and tirzepatide vials."
updated: 2026-07-24
---
Free tool · no signup

# GLP-1 mg → units calculator

Draw your GLP-1 from a vial? Convert your mg dose to insulin-syringe units (U-100) — and back again. Pick your medication for a calculator tuned to its typical concentrations.

**Your vial, remembered**

GLPMate stores your concentration and counts doses left — with a magnified syringe read. Free.

[ Download on the **App Store** ](https://glpmate.go.link?adj_t=22klhq12&adj_campaign=tools-units-calculator&adj_redirect_android=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235&adj_redirect_macos=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235&adj_redirect_windows=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235) [ GET IT ON **Google Play** ](https://glpmate.go.link?adj_t=22klhq12&adj_campaign=tools-units-calculator&adj_redirect_ios=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate&adj_redirect_macos=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate&adj_redirect_windows=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate)

Pick your medication

[ **Semaglutide mg → units** For Ozempic, Wegovy. Common strengths 1, 2.5, 5, 10 mg/mL. Open calculator → ](/tools/units-calculator/semaglutide)[ **Tirzepatide mg → units** For Mounjaro, Zepbound. Common strengths 10, 20, 30, 40 mg/mL. Open calculator → ](/tools/units-calculator/tirzepatide) [ **Full dose calculator** The visual syringe + magnifier, with doses-per-vial and unit-error checks. Open tool → ](/tools/dose-calculator)

**The formula:** units = (dose in mg ÷ concentration in mg/mL) × 100. On a U-100 syringe, 100 units = 1 mL — so your units number is just your draw volume, read on a finer scale.

This tool is for general education only. It is not medical advice, not a diagnosis, and not a substitute for your prescriber or pharmacist. Doses and schedules are set by your clinician — never start, stop or change a medication based on a web calculator.

FAQ

## mg ↔ units questions

### How do you convert GLP-1 mg to units?

Units = (dose in mg ÷ vial concentration in mg/mL) × 100. A U-100 syringe marks 100 units per 1 mL, so the units number is just your draw volume in mL on a finer scale. Pick your medication above for a calculator that does it both ways.

### Why do compounded GLP-1 users need this?

Brand pens (Ozempic, Wegovy, Mounjaro, Zepbound pens) are pre-measured. Compounded vials are not — you draw each dose yourself with an insulin syringe, which is marked in units, while your prescription is in mg. This converts between the two.

### What if my label only shows total mg?

Divide total drug by total volume to get concentration. A "10 mg / 0.5 mL" vial is 20 mg/mL. Enter that as your concentration.

### Is this a dosing recommendation?

No — it's arithmetic. Your dose comes from your prescriber, and you should confirm every conversion with your pharmacist, especially when your vial or dose changes.

## Stop redoing the math.

Dose calculator built in. iOS & Android.

[ Download on the **App Store** ](https://glpmate.go.link?adj_t=22klhq12&adj_campaign=tools-units-calculator&adj_redirect_android=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235&adj_redirect_macos=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235&adj_redirect_windows=https%3A%2F%2Fapps.apple.com%2Fapp%2Fid6788548235) [ GET IT ON **Google Play** ](https://glpmate.go.link?adj_t=22klhq12&adj_campaign=tools-units-calculator&adj_redirect_ios=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate&adj_redirect_macos=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate&adj_redirect_windows=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dapp.eleutheromania.glpmate)