LongevityMate Tools
Free health calculators that explain the answer
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6 reviewed tools in Preventive health
FreePreventive health
Alcohol-free streak calculator
Count completed alcohol-free calendar days between two dates, plus the inclusive streak day and exact weeks-and-days breakdown.
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FreePreventive healthBiological age calculator
Estimate your blood-based PhenoAge with nine biomarkers. Free biological age calculator with clear units, the same LongevityMate formula and honest limits.
Open toolFreePreventive healthCelsius to Fahrenheit converter
Convert one recorded temperature between degrees Celsius and degrees Fahrenheit using the exact scale relationship, without interpreting the reading.
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FreePreventive healthDaily screen time calculator
Turn an average daily screen-time duration into neutral 7-day, 30-day and 365-day totals, without scores, targets or judgement.
Open toolFreePreventive healthSmoking cost and savings calculator
Calculate cigarette spending over 1, 7, 30 and 365 days from your own pack price and pack size. Private, currency-neutral arithmetic.
Open toolFreePreventive healthSmoking pack-years calculator
Calculate cigarette pack-years from average cigarettes per day and years smoked. See the formula, limits and what the result cannot tell you.
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