Add time, find duration between hours, or convert units.
If End Time is earlier than Start Time, we assume it's the next day.
Use the Add/Subtract mode to calculate finish times for tasks, cooking, or travel. It automatically handles crossing over midnight.
Use the Time Difference mode to calculate billable hours, shift lengths, or event durations instantly.
Convert seconds into human-readable hours and minutes, or scale days down into hours for project planning.