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LongevityMate Tools

Free health calculators that explain the answer

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3 reviewed tools in Sleep and recovery

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Caffeine intake calculator combining 95 mg twice and 63 mg once into a 253 mg labelled totalFreeSleep and recovery

Caffeine intake calculator

Add the caffeine stated on up to six product labels. Exact local arithmetic in milligrams, with no safe-limit, dose or timing advice.

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Sleep duration calculator

Calculate time in bed from bedtime and wake time. Optionally subtract awake minutes for a clearly labelled sleep estimate, with no cycle claims.

Open toolConceptual bedroom illustration with a shorter highlighted asleep interval inside a longer in-bed interval; no measured values or diagnosis are shown.FreeSleep and recovery

Sleep efficiency calculator

Calculate a descriptive sleep-efficiency percentage from matching asleep and in-bed hours. See the exact formula, impossible-input guard and measurement limits.

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