Deadline Calculator

Deadline counting looks trivial until you notice how many conventions are in play. Does the trigger day count? Are the days calendar or business days? What happens when the result lands on a Saturday, or on a day the court is closed?

This calculator applies the convention you specify rather than assuming one. It shows both the unadjusted date and the rolled date, so you can see exactly what the rule you selected produced.

Result

Due date

2026-04-01

Days remaining

30

Day of the week: Wednesday
Before rolling: 2026-04-01
Rolled off a weekend or closure?: No
Calendar days from trigger: 30
Business days from trigger: 22
Status: Upcoming
Method applied: 30 calendar day(s) after the trigger date

This tool performs arithmetic on the values you enter. It does not provide legal advice and does not create an attorney-client relationship.

Counting rules differ by court and jurisdiction, including whether the trigger day counts, how weekends and holidays are treated, and how a deadline that lands on a closure day is rolled. Always verify against the governing rule and the court calendar.

Reminder schedule

Milestone	Date
Trigger date	2026-03-02
30 days before due	2026-03-02
14 days before due	2026-03-18
7 days before due	2026-03-25
1 day before due	2026-03-31
Due date	2026-04-01

How to use the deadline calculator

Enter the trigger date - the event the rule counts from.
Enter the number of days and choose calendar or business days.
Choose whether the count runs forward or backward, and whether the trigger day counts.
List any court closures, choose whether to roll forward, then verify against the governing rule.

What people use this for

Working out a response deadline from a date of service.
Counting backwards from a hearing to a filing deadline.
Checking a date a colleague calculated using a different convention.
Building a reminder schedule ahead of a fixed date.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

Thirty calendar days after service

Counting 30 calendar days forward from 2 March 2026, not counting the trigger day, rolling forward off weekends.

Due date: 2026-04-01
Days remaining: 30
Rolled off a weekend or closure?: No

Fourteen business days before a hearing

Counting 14 business days backward from a 20 April 2026 hearing.

Due date: 2026-03-31
Days remaining: 29
Day of the week: Tuesday

The conventions that change the answer

Four choices decide the result. Whether the trigger day is counted shifts everything by one. Calendar days and business days diverge quickly - thirty of each can be more than two weeks apart. Whether a weekend result rolls forward changes the date again. And which days count as closures depends on the court, not on the calendar.

Because the conventions differ between jurisdictions and even between rules within one jurisdiction, this calculator asks rather than assumes. Getting the convention wrong is the most common way a correctly performed count produces the wrong date.

What this tool cannot do

It counts days. It does not know your jurisdiction, it has no court calendar, it does not know which rule applies to your filing, and it cannot tell you whether a rule counts in calendar or business days.

Court holiday schedules are the clearest example: they differ by court and change each year, which is why closures are something you enter rather than something the tool supplies. Always verify the result against the governing rule and the court’s published calendar.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

Calendar counting adds or subtracts days directly. Business counting skips weekends and any closure dates listed.
Including the trigger day removes one day from the count, which is the usual effect of an inclusive rule.
Rolling forward moves a result that lands on a weekend or a listed closure to the next available day.
The tool performs arithmetic or date counting on the values you enter. It does not interpret a rule, a statute or a contract.
Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This website provides general informational and productivity tools and does not provide legal advice or create an attorney-client relationship.

The date and deadline tools count days exactly as you instruct them. They do not interpret court rules, statutes of limitation, filing requirements or any other legal authority, and they do not know the rules of your jurisdiction.

Always verify any date, fee, or calculation against the governing rule, the court calendar and your own professional judgement. If you need legal advice, consult a lawyer licensed in your jurisdiction.

Frequently asked questions

Does the day of the triggering event count?

It depends on the rule. Many procedural rules exclude the day of the act and include the last day; others do the opposite. The option exists because there is no universal answer.

Why do I have to enter court holidays?

Because they differ by court and by year, and no calculator can know which court your matter is in. Entering them explicitly is more reliable than a built-in list that might be wrong.

What happens if a deadline lands on a weekend?

Many rules roll it to the next business day, but not all, and some roll backward instead. The tool shows both the unadjusted and the rolled date so you can apply the correct one.

Can I rely on this for a court filing?

No. It performs arithmetic on the instructions you give it. Verify every date against the governing rule and the court calendar before relying on it.

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