Comparison guide
Deadline calculator vs calendar reminder
A calculator works out the correct date. A calendar reminder helps you remember to act on it.
Quick answer
Use a deadline calculator when the due date depends on a rule, such as 20 working days, 14 calendar days or a notice period. Use Google Calendar, Outlook or another reminder app after you have calculated and checked the date.
Where calendars fall short
- They may not know whether weekends or bank holidays should be excluded.
- They rarely explain whether the start day counts.
- They can remind you about the wrong date if the original rule was misunderstood.
Best workflow
Calculate the deadline first, check the rule, then add the result to your calendar with a reminder a few days before. For regulated or legal deadlines, keep a note of the rule you used.