Add Time Calculator

Add a duration to a 24-hour clock time, wrapping across midnight.

01 / inputs

Start time

HH:MM

Hours to add

hours

Minutes to add

min

02 / result

RESULT TIME

11:30

Result time: 11:30
Clock format: 24-hour

Calculation trace

09:00 + 2 hours + 30 minutes = 11:30
690 minute of day
Time after addition

§

SOURCES

International Organization for Standardization (ISO)
ISO 8601 — Date and time format ↗
24-hour civil time representation with hour/minute/second carry-over
Accessed 2026-08-19