CrateX.app

時間計算機

同じ日の2つの時刻の差、または複数の時間・分の合計を計算します。

Select Calculation

Use this for same-day time spans such as a shift, meeting, or focused work block.

Start time

End time

Result

Select Calculation

Use this for same-day time spans such as a shift, meeting, or focused work block.

時間計算機

かんたんスタート

Choose between calculating a span between two times or adding duration rows.

For a time span, enter start and end times. For totals, enter hours and minutes by row.

The result shows both hours-and-minutes and total minutes for schedules, invoices, or notes.

calculate the same-day span from start to finish.

check how long a scheduled block lasts.

add separate duration rows into one total.

Between-times mode only calculates same-day spans and does not wrap across midnight.

Minutes should be 0 to 59; enter 90 minutes as 1 hour 30 minutes.

Add-duration mode supports up to 20 rows for quick totals, not a full timesheet.

Overnight spans, timezones, daylight saving, and breaks need separate handling or a dedicated timesheet tool.

Payroll, invoicing, or billing may require custom rounding such as 6-minute or 15-minute increments.

Browser time controls may display differently by locale, but the calculation uses HH:mm.

Times and duration rows are calculated locally in your browser and are not uploaded.

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