Pindrop

TRT Dose Calculator

Turn a weekly testosterone dose into a per-injection amount, or work from a per-injection dose back to the weekly total. Get milligrams, milliliters, and syringe units per shot.

mg/mL

From the vial, e.g. 200.

Enter dose as

mg

Injections per week

Per injection

0.38mL

75 mg · 38 units on a U-100 syringe
0102030405060708090100

Inject every 3-4 days (e.g., Monday & Thursday)

mg per injection
75mg
Units
38
Weekly total
150mg

What this calculator does

A testosterone protocol is usually written as a weekly dose, but you inject a few times a week from a vial labeled in milligrams per milliliter. This calculator bridges the two. Give it the concentration and either your weekly total or your per-injection dose, and it returns the milligrams, the volume, and the units to draw for a single shot.

Splitting a weekly dose into smaller, more frequent injections keeps blood levels steadier between shots. Switch the injections-per-week control and watch the per-injection volume drop, so you can see the trade-off before you commit to a schedule.

Reading the result

The main number is the milliliters per injection; the caption adds the milligrams and the equivalent units on a U-100 insulin syringe, which is what many people use for subcutaneous testosterone. The stat row confirms the weekly total so a per-injection entry does not drift from your target. A short schedule note suggests spacing for common frequencies. Doses and frequency belong to you and your provider; this tool only does the conversion.

Common questions

How do I split a weekly testosterone dose into injections?
Divide the weekly milligrams by how many times you inject. 100 mg a week at twice weekly is 50 mg per shot. Enter your weekly dose and frequency and the calculator gives the mg, mL, and syringe units per injection.
How many units is my testosterone dose on an insulin syringe?
Divide the dose by the vial concentration to get the volume, then read it on a U-100 syringe where 1 mL is 100 units. For 50 mg from a 200 mg/mL vial, that is 0.25 mL, or 25 units.
Should I inject testosterone once a week or more often?
More frequent, smaller injections keep blood levels steadier between shots, which some people find smoother. Once weekly is simpler. Both are common, and the right choice is between you and your provider. Try different frequencies to see how the per-injection volume changes.
What concentration is testosterone cypionate or enanthate?
Commonly 200 or 250 mg/mL, but check your vial; it is printed on the label. Enter the exact number for an accurate draw.

Pindrop is a calculation tool, not medical advice. Confirm your dose and protocol with a licensed healthcare provider.