Deadline Date Calculator
The Deadline Calculator adds a number of days to a start date to find your deadline, and shows how many days remain from today. Enter the start date and number of days.
Formula
Deadline = Start Date + Days
- Days are counted as calendar days.
- Days remaining is measured from today's date.
12 Jul 2026 + 30 days
Inputs
- Start Date: 2026-07-12
- Days Until Deadline: 30
30 days after 12 July 2026 is 11 August 2026.
Frequently asked questions
How do I calculate a deadline?
Add the number of days to your start date. This calculator also shows how many days are left from today.