Hormone Calculator Suite
Hormone Calculator Suite
Precision tools for TRT protocol planning
How to use: Click on the tabs below to access different calculators. Testosterone Dose calculates injection volumes and supply duration. HCG Mixing helps you reconstitute HCG with bacteriostatic water. E2/DHT Predictor estimates estradiol and DHT levels based on your total testosterone. Unit Conversion converts between ng/dL and nmol/L. Free Testosterone calculates free and bioavailable T using the Vermeulen formula.
Testosterone Dosage Calculator
Calculate injection volumes and protocol planning
mg/week
Per Injection
75
mg
Volume Per Injection
0.38
mL
Active Test/Week
103.5
mg
Injections/Week
2
times
Monthly Dose
650
mg
Days Per Vial
93
days
Total Supply
93
days
Visual Syringe Reference
HCG Mixing Protocol Calculator
Calculate bacteriostatic water for desired HCG concentration
IU
IU
mL
Bac Water to Add
2.5
mL
Final Concentration
2000
IU/mL
Doses Per Ampule
10
doses
Volume Per Dose
0.25
mL
Important: HCG should be refrigerated after reconstitution and used within 60 days.
TRT Hormone Predictor
Predict Estradiol, DHT, and Free Testosterone from Total T
ng/dL
Predicted E2
32
pg/mL
Predicted DHT
48
ng/dL
Predicted Free T
12.5
ng/dL
E2:T Ratio
0.053
DHT:T Ratio
0.08
Free T %
2.1
%
Estradiol Reference (20-40 pg/mL optimal on TRT)
LowOptimalHigh
Reference: Lakshman KM et al. J Clin Endocrinol Metab. 2010;95(8):3955-64.
Testosterone Unit Converter
Convert between ng/dL and nmol/L
500
ng/dL
⟷
17.35
nmol/L
ng/dL
500
nmol/L
17.35
ng/mL
5.00
µg/L
5.00
Reference Ranges
| Classification | ng/dL | nmol/L |
|---|---|---|
| Low | <300 | <10.4 |
| Low-Normal | 300-450 | 10.4-15.6 |
| Normal | 450-800 | 15.6-27.7 |
| High-Normal | 800-1000 | 27.7-34.7 |
| Supraphysiological | >1000 | >34.7 |
Free & Bioavailable Testosterone
Vermeulen formula calculation
nmol/L
Free Testosterone
10.2
ng/dL
Free T (pmol/L)
354
pmol/L
Bioavailable T
220
ng/dL
Free T %
2.04
%
SHBG-Bound
54
%
Albumin-Bound
44
%
Free T Reference (Adult Males)
| Age | pg/mL | pmol/L |
|---|---|---|
| 20-29 | 9.3-26.5 | 32-92 |
| 30-39 | 8.7-25.1 | 30-87 |
| 40-49 | 6.8-21.5 | 24-75 |
| 50-59 | 7.2-24.0 | 25-83 |
| 60+ | 6.6-18.1 | 23-63 |
Reference: Vermeulen A et al. J Clin Endocrinol Metab. 1999;84(10):3666-72.
Sponsors
