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Daily Report Time Calculator
Add up tasks + transit, then calculate an end time (forward) or required start time (backward).
Tasks
Add items in minutes.
Transit
Duration
0:30
Totals
Tasks210 min
Transit30 min
Total4:00
Forward
End time: 13:00
Daily Report Time Calculator: Guide
- Intent
- Sum multiple tasks (in minutes) plus transit time, then calculate an end time (forward) or required start time (backward).
- What it does
- Adds task durations and transit minutes to produce a total time, then computes either end time from a start time, or required start time from an end time.
- Key features
- Forward (start -> end), Backward (end -> start), Multiple tasks list, Copy summary
- Privacy
- Runs locally in your browser. No data is uploaded.
- Best for
- Daily reports (日報) when you need total time and start/end times quickly
- Planning when to start to finish by a fixed end time
- Summing multiple work items without a spreadsheet
- Why this tool
- Fast dynamic task list with a clear total
- Forward/backward time calculation in one place
- Copyable summary for pasting into a report
How to use
- 1Add tasks with labels and minutes.
- 2Set transit minutes (optional).
- 3Use Forward to compute an end time from a start time.
- 4Use Backward to compute a required start time from an end time.
- 5Copy the summary if you want to paste it into your report.
Common mistakes
- Invalid times must be in HH:MM (e.g., 09:00).
- Times wrap around midnight (00:00 to 23:59).
Examples
Forward: start -> end
Start: 09:00
Tasks: 90 min, 120 min
Transit: 30 min
End: 12:00
Backward: end -> start
End: 18:00
Tasks: 120 min, 60 min
Transit: 30 min
Start: 14:30