Operator: TimeCalcy, owned by Gagan.
TimeCalcy helps you add and subtract durations, find the time between two clock readings, and total time entries without confusing minutes with decimal hours.
One calculation method
All three calculators use a shared integer-seconds engine. Answers are calculated in your browser, without an account, a database lookup or an AI service.
Limits that stay visible
Next-day handling is an explicit choice. Subtraction can produce a negative duration. Decimal-hour displays are rounded separately from exact seconds. Dates, timezones, daylight-saving transitions and leap seconds are not supported.
Read the calculation method and worked examples. TimeCalcy does not currently offer a direct public support channel.