Clarity. Safety. Confidence.

Take control of TRT & peptide dosing — without confusion.

InjectBuddy turns complex math into simple actions. Accurate mg→mL, clean syringe visuals, and schedules that make sense.

Free. No login needed.

What Users Are Saying

★★★★★

“Finally a calculator that makes sense. Simple, accurate, and fast.”

— Aaron, TRT User
★★★★★

“I used to spend 10 minutes doing math — now it’s done in seconds.”

— Michael, Fitness Coach
★★★★☆

“The syringe visuals make peptide mixing foolproof.”

— Daniel, Peptide User
★★★★★

“Super clean layout, no clutter. You nailed the UX.”

— Laura, Pharmacist
★★★★★

“Best tool I’ve found online for TRT management.”

— Ben, Hormone Therapy User
★★★★★

“Clear outputs, sensible defaults, and it’s fast on mobile.”

— Tessa, Nurse

Why InjectBuddy exists

People managing hormones at home need clarity, not guesswork. InjectBuddy brings clinical accuracy and a calm, modern experience to dosing decisions.

What you can do here

TRT dosage calculator

Exact mL per injection from your mg/week and vial concentration, plus injection frequency.

Use Calculator

Peptide reconstitution

Get target concentration and clear draw volumes for insulin syringes.

Reconstitution Tool

Schedules that stick Coming Soon

“Injections per week” or “every N days”—auto plans that just make sense.

Coming Soon

How it works

1. Enter your dose & concentration.

We convert mg to mL and visualize syringe fill.

2. Choose a schedule.

Injections/week or every N days—both supported.

3. Follow clear outputs.

Exact mL per shot and a simple plan to follow.

Safety & Disclaimer

InjectBuddy is for educational purposes only and is not medical advice. Always follow your clinician’s instructions. Refer to supplier documentation for product-specific guidance.

Ready to make dosing simple?