Court Deadline Calculator
Use this court deadline calculator to count forward or backward from a start date to a legal deadline — for filing a response, serving documents, or meeting a procedural cut-off. Choose calendar days or business days (which skip weekends), and the calculator returns the deadline date and the day of the week.
Last updated:
Calculate your deadline
Enter values above and press Calculate to see your result.
Formula used
For calendar days, the deadline is simply the start date shifted by the number of days:
Deadline = start date ± number of days
For business days, the calculator steps one day at a time and counts only Monday–Friday, skipping Saturdays and Sundays, until it reaches the required number. Note that real court rules may also exclude public/court holidays and have specific conventions for counting the first and last day.
Worked examples
30 calendar days. From 4 June 2026, the deadline is 4 July 2026.
10 business days. From 4 June 2026 (a Thursday), counting weekdays only lands on 18 June 2026.
Counting backward. A hearing on a set date minus 14 days gives the latest filing date.
How to use this calculator
- Enter the start date that triggers the deadline.
- Enter the number of days from the rule or court order.
- Choose whether to count forward or backward.
- Select calendar days or business days.
- Press Calculate for the deadline date — then verify against the court's rules.
Common day-counting conventions
| Rule says… | Usually means |
|---|---|
| “within 30 days” | Calendar days, including weekends |
| “within 10 business days” | Weekdays only, often excluding holidays |
| “not less than X days before” | Count backward from the event |
| Deadline on a weekend/holiday | Often rolls to the next court day |
Conventions differ by jurisdiction — this is general guidance only.
Who should use this calculator
Anyone tracking a legal or procedural deadline — self-represented litigants, paralegals double-checking a date, or anyone responding to a notice with a time limit. It's a planning aid, not a substitute for the official rules.
Calendar days vs business days
Many deadlines are counted in calendar days, including weekends and holidays. Shorter periods are often counted in business (court) days to give a fair amount of working time. Misreading which applies is a common and costly error — always check the exact wording of the rule or order.
Watch-outs that can change the date
- Court holidays. This tool skips weekends for business days but not public holidays — add those manually.
- First-day rules. Some systems exclude the triggering day from the count.
- Weekend roll-over. A deadline that falls on a weekend or holiday often moves to the next working day.
- Service method. Extra days are sometimes added for postal service.
Limitations of this calculator
It counts calendar or weekday gaps only. It does not know your jurisdiction's holidays, first/last-day conventions, service-of-process additions, or roll-over rules. Treat the result as an estimate to be confirmed against the governing rules of court or with a qualified attorney.
Frequently asked questions
How do I calculate a court filing deadline?
Add the number of days in the rule to the start date, counting either calendar or business days. This tool does both and shows the weekday — but always verify against the court's specific rules.
What's the difference between calendar and business days?
Calendar days include weekends and holidays; business (court) days count only weekdays, usually excluding holidays. The rule's wording tells you which applies.
Does this account for public holidays?
No — it skips weekends for business-day counts but not public or court holidays. Add holidays manually, and remember deadlines often roll to the next working day.
Can I count backward from a hearing date?
Yes. Choose “backward” to find the latest date you can act before a fixed event, such as a hearing.
Is this legal advice?
No. It's a general calculation tool. Deadline rules vary by jurisdiction; confirm important dates with the court's rules or your attorney.