Free tools

GLP-1 tools that don't ask for your email

No account, no sign-up, no catch. Made by the team behind Tirzing.

AM I NORMAL? 62nd percentile BEFORE & AFTER -41 lb GOAL DATE Wed 4 Mar from two weigh-ins
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What have I lost?

Turn your weight loss into something you can actually picture, bowling balls, house cats, gold bars, and get a share image for it.

Visualize my loss →
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Before & after maker

Drop in two photos, add your weights and dates, and get a clean before/after, with automatic face blurring if you want it.

Photos never leave your device Build my before/after →
Calculator

When will I hit my goal?

Two weigh-ins is all it takes, no working out your own rate. Get a date, plus the nearer milestones actually worth aiming at.

Find my date →
Calculator

What is each pound costing you?

Vials, visits, labs, the lot. The number is usually a surprise, and it's the one people use to justify the spend to themselves.

Add it up →
Calculator

Medication level chart

Enter your doses and your schedule, and see an estimated level charted over time. Works for semaglutide, tirzepatide, retatrutide or any peptide you enter.

Chart an estimate →
Calculator

How long will my vial last?

Vials, single-dose pens or KwikPens of semaglutide, tirzepatide, retatrutide or any peptide. Get a run-out date and a reorder-by date, with any planned dose changes counted.

Find my run-out date →
Printable

Printable GLP-1 log

A printable shot and weigh-in log, and a spreadsheet version you can open in Google Sheets or Excel, and import into Tirzing later without retyping a thing.

Get the template →
Calculator

BMI calculator

The number, plus what other BMI calculators skip: the weight that moves you a category, and how far your BMI has already come.

Work out my BMI →
Calculator

TDEE & BMR calculator

What you burn at rest, what you burn on a normal day, and the calorie target for the rate you actually want to lose at.

Work out my numbers →

Want the rest of it?

These are the fun bits pulled out of Tirzing, the full app tracks your shots, weight, doses, supply and side effects, estimates your medication level, and tells you when you're stalling and what to do about it.