TRT Calculator

Testosterone Replacement Therapy Tools

TRT Dosing Free Testosterone Vermeulen Method

Medical supervision required: Calculate TRT dosing and free testosterone levels using clinically validated methods.

This TRT calculator helps estimate testosterone replacement therapy dosing based on your body weight, current testosterone levels, and target levels. Choose from Testosterone Cypionate, Enanthate, or Propionate esters with various injection frequencies. All calculations are starting points and must be adjusted based on blood work under medical supervision.

Loading Calculator...

Results

Testosterone Esters

Cypionate

Half-life: 8-12 days. Most common in US. Stable levels with weekly injections.

Enanthate

Half-life: 7-10 days. Similar to cypionate. Popular worldwide.

Propionate

Half-life: 2-3 days. Requires frequent injections. Faster onset.

Required Monitoring

Total & Free Testosterone (6-8 weeks)
Hematocrit & Hemoglobin
Estradiol (E2) levels
PSA for prostate health
Lipid panel annually
Medical Supervision Required

TRT must be prescribed and monitored by a qualified healthcare provider. This calculator provides estimates only. Regular blood work is essential for safe therapy.