Time Duration Calculator & Hours Calculator — Elapsed Time, Decimal Hours, Minutes

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Clock Math

Professional Time Calculator

Time Calculator

Calculate the total time between two times. Handles crossing midnight automatically.

When ON, always treat end time as the following day (+1d). When OFF, we still auto-handle crossing midnight if end < start.

Calculation Result

What's shown in the results
HH:MM:SSFormatted hours, minutes, seconds
MinutesTotal whole minutes
Decimal hourse.g., 2:30:00 → 2.5
SecondsTotal seconds

🔒 Your calculations stay private - stored locally on your device only

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