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SELF-TESTS & CALCULATORS

Assess your men’s health – with self-tests and calculators

Short questionnaires systematically categorize symptoms, while our online calculators explain your most important health metrics—quickly, clearly, and based on scientifically sound formulas. Neither replaces a medical diagnosis.

Self-tests

Low Testosterone Self-Test

15 questions about energy, libido, mood, and performance. Takes about 3 minutes; at the end you will see your score.

Cardiovascular Self-Test

15 questions about lifestyle, known health metrics, stress, and family. It does not calculate personal risk, but rather categorizes characteristics.

Erection Self-Test

15 questions about erection, desire and strain, as well as factors such as blood pressure, smoking and exercise.

Prostate self-test

15 questions about urine stream, urgency and daily activities over the past four weeks.

Calculator

BMI Calculator

The body mass index (BMI) relates body weight to height and serves as a simple guideline for assessing body weight.

Dosage Calculator

With our dosage calculator, you can quickly and reliably calculate how many milliliters of a solution you need for a desired active ingredient amount in milligrams, for example for testosterone enanthate. Simply enter the dose and concentration and immediately receive the appropriate volume in ml.

Testosterone Level Unit Converter

Our testosterone converter offers a quick and reliable way to convert your levels from ng/dL to nmol/L and vice versa.

Free Testosterone Calculator

Free testosterone refers to the small proportion of the hormone that is unbound in the blood and biologically active; using the Vermeulen formula, it can be reliably calculated from total testosterone, SHBG, and albumin.

HOMA Index Calculator

Do you want to know whether your body is still sensitive to insulin or is already showing signs of a metabolic disorder? Calculate your HOMA index now with ease! The HOMA index allows fasting glucose and fasting insulin to be converted into a single number that can provide clues about your glucose metabolism.

Calorie and Macro Calculator

Your daily calorie needs for weight loss, maintenance, or muscle gain, and the macronutrient breakdown for protein, carbohydrates, and fat, based on your diet.

eGFR Calculator

Estimates your kidney function (eGFR) from creatinine and optionally cystatin C using the 2021 CKD-EPI formula, which is also used by laboratories.

Note: All these calculators are intended solely for general information and educational purposes. The results are calculated estimates based on a scientific formula and do not constitute a medical diagnosis, assessment, or treatment recommendation.

The calculators are not a substitute for an examination, consultation, or diagnosis by a doctor.

Do not make any health-related decisions based solely on this result, and consult a medical professional if you have any concerns.

Do you have any questions?

Here is an overview of the most frequently asked questions and answers.

View all

Sources:

Vermeulen, A., Verdonck, L., & Kaufman, J. M. (1999). A critical evaluation of simple methods for the estimation of free testosterone in serum. The Journal of Clinical Endocrinology & Metabolism, 84(10), 3666–3672. https://doi.org/10.1210/jcem.84.10.6079

Nuttall, F. Q. (2015). Body mass index: obesity, BMI, and health: a critical review. Nutrition Today, 50(3), 117–128. https://doi.org/10.1097/NT.0000000000000092

Ross, R., Neeland, I. J., Yamashita, S., Shai, I., Seidell, J., Magni, P., ... & Després, J. P. (2020). Waist circumference as a vital sign in clinical practice: a Consensus Statement from the IAS and ICCR Working Group on Visceral Obesity. Nature Reviews Endocrinology, 16(3), 177–189. https://doi.org/10.1038/s41574-019-0310-7

Travison, T. G., et al. (2017). Harmonized Reference Ranges for Circulating Testosterone Levels in Men of Four Cohort Studies. JCEM, 102(4), 1161–1173. https://doi.org/10.1210/jc.2016-2935

Bhasin, S., et al. (2018). Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. JCEM, 103(5), 1715–1744. https://doi.org/10.1210/jc.2018-00229