Free blood test calculators

Quick, private calculators for the numbers people ask about most. Enter your values and get a plain-English result based on published clinical guidelines. Then, when you want the whole picture, upload your full test.

Cholesterol Ratio Calculator

Your total-to-HDL ratio, one of the clearest single signals of heart risk. See if yours is optimal, moderate, or high.

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Non-HDL Cholesterol Calculator

All your "bad" cholesterol in one number, a marker many guidelines now prefer over LDL alone.

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eGFR Calculator

Estimate kidney function with the race-free CKD-EPI 2021 equation and see your stage.

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One number is never the whole story

BloodMarker reads your entire blood test at once, explains how your markers interact, and tracks them over time so you can watch them improve.

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These calculators are for education only and are not medical advice or a diagnosis. Always discuss your results with a qualified healthcare professional. Provided by the BloodMarker Team · contact@bloodmarker.com