TimeCubby.

Time Duration Converter

Convert seconds, minutes, hours, days and weeks. Keep the full duration, even when it runs past midnight.

Enter a duration

Enter minutes as a number, such as 90 or 90.5. Use a dot for decimals.

Conversions stay in this browser and are not saved. Copy link shares only the single value and its format.

Your converted duration

Enter a value and choose Convert time.

Convert a list of durations

Paste one value per line, up to 200 values and 16,000 characters. Blank lines are ignored. Each row keeps its original line number, including any rows that need correction.

Use the selected format for every line. H:MM always means hours:minutes. Durations can be negative and can exceed 24 hours.

Your converted list will appear here.

Convert a duration into the units you need

One minute is 60 seconds and one hour is 60 minutes. For example, 90 minutes is 1:30:00, 1.5 hours or 5,400 seconds. Pick the input format and the result shows every supported unit together.

What does H:MM:SS mean?

The fields are hours, minutes and seconds. Two fields, such as 1:30, mean one hour and 30 minutes. For one minute and 30 seconds, enter 0:01:30 or choose Seconds and enter 90. Hours may exceed 24; 27:30 is a duration of 27 hours and 30 minutes.

Are days and weeks always fixed lengths?

This duration converter uses 24 hours per day and seven days per week. It does not count calendar dates or time-zone changes. An actual local day can be shorter or longer when clocks change; use Work Hours for dated, time-zone-aware intervals. Months and years are not fixed-duration units here.

Can durations be negative or fractional?

Yes. Use a leading minus for an adjustment, such as -0:30 or -1.5 hours. Decimal inputs allow up to nine places and are normalized to the nearest millisecond. H:MM:SS allows up to three decimal places on seconds. The limit is 1,000,000 hours in either direction; decimal results display up to six places.