Add Time Calculator

Sum hours, minutes, and seconds with carry into 24-hour clock wrap where applicable.

Enter your values in the input panel on the left. Results update instantly and you can share your scenario with the copy-link button.

Example: 2h 45m 30s + 1h 20m 45s = 4h 6m 15s.

Mixing clock time (3:30 PM) with duration math — use duration fields only, not AM/PM clock values.

Reading and listening speeds vary by person and material. Use estimates for planning, not strict scheduling guarantees.