Online Hours and Minutes Calculator

Use this free calculator to add a series of hours and minutes into one total. It is useful for adding work logs, study sessions, project time, exercise duration, travel segments, or any list of time durations.

How to Add Hours and Minutes

• Add rows: Enter each duration as hours and minutes.
• Use minutes freely: The calculator automatically converts extra minutes into hours.
• Review totals: See the final answer as hours/minutes, decimal hours, and total minutes.
• Optional clock rows: Use the lower section only when you need start and end time calculations.

Hours/Minutes vs Start/End Time

If you already know each duration, use the top hours and minutes calculator. If you only know start and end clock times, use the optional start/end time rows below to calculate each period.