Free tool for couples trying to conceive

Read your semen analysis in plain language.

Enter the values from your lab report. Each one is compared with the WHO 2021 lower reference limit and explained in a sentence. It runs entirely in your browser: nothing is sent or saved.

Compared with WHO 2021 lower reference limits

Enter values from your report, or use the example, to see how each one compares.

Volume
Not entered
How much semen is in the sample. WHO lower limit: 1.4 mL.
Concentration
Not entered
How many sperm there are in each millilitre. WHO lower limit: 16 million/mL.
Total motility
Not entered
The share of sperm that move at all. WHO lower limit: 42 %.
Progressive motility
Not entered
The share of sperm that swim forward. WHO lower limit: 30 %.
Normal morphology
Not entered
The share of sperm with a typical shape under strict criteria. WHO lower limit: 4 %.

Total sperm count

Enter volume and concentration to calculate it.

Educational, not a diagnosis. Talk to a clinician about your results. Limits from the WHO laboratory manual for the examination and processing of human semen, 6th ed. (2021) ↗

Track repeat analyses over time in the app.

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Before you read too much into one report

One sample is one data point.

Semen parameters vary from one sample to the next, so clinicians usually look at more than one analysis before drawing conclusions. The WHO limits used here describe the low end of results seen in the reference population; a value below one is a reason to talk to a clinician, not a verdict.

Sperm take roughly 90 days to develop and mature, so a change you make today, such as more sleep or less heat exposure, shows up in a sample months from now. That is why TestoTrack spaces retests about 90 days apart.

TestoTrack is a wellness and tracking tool, not a medical device. It does not diagnose, treat or prevent any condition.