Disclaimer
Built by Pouroa Frew — developer, not a medical professional. InjectBuddy performs standard volume and ratio calculations based on your inputs. These calculators do not constitute medical advice — always verify dosing with your prescribing doctor or pharmacist.
These calculators perform mathematical calculations only
InjectBuddy is a free tool that performs arithmetic on numbers you provide. The TRT dosage calculator divides a dose by a concentration. The peptide reconstitution calculator divides a vial size by a target concentration. The BMI calculator applies the standard BMI formula. The free testosterone index calculator applies the FAI formula. That is the entirety of what this site does.
No calculation on InjectBuddy should be interpreted as medical advice, a treatment recommendation, a diagnosis, or a substitute for the guidance of a qualified healthcare professional.
Verify all dosing with your prescribing doctor or pharmacist
Prescription medications — including testosterone — must be used in accordance with the instructions of a licensed prescriber. Your prescribed dose, injection frequency, and vial concentration should come from your doctor's prescription. InjectBuddy helps you convert those numbers into a draw volume; it does not determine what those numbers should be.
If there is any discrepancy between a result shown by InjectBuddy and what your doctor or pharmacist has told you, follow your medical professional's instruction and contact them to clarify.
No professional relationship
Use of this site does not create any professional, medical, pharmacist-patient, or advisory relationship between you and Pouroa Frew or InjectBuddy. Pouroa Frew is a software developer, not a licensed medical or pharmaceutical professional.
Accuracy
Reasonable effort has been made to ensure the calculations are mathematically correct. However, InjectBuddy is provided "as is" without warranty of any kind. If you believe you have found a calculation error, please report it via the contact details on the About page and it will be investigated promptly.
Individual variation
Hormone protocols, peptide dosing, and body composition assessments are highly individual. A calculation that is correct for one person may not be appropriate for another. Always apply results in the context of your own medical situation and under the guidance of qualified professionals.