Deadline Calculator - Plan Court, Filing, Due Dates

A deadline calculator adds a fixed duration in days, weeks, months, or years to a chosen start date and, when the result lands on a Saturday, Sunday, or US federal holiday, rolls the deadline to the next business day. Use this deadline calculator for court filings, statute-of-limitations cutoff dates, contract and project due dates, and personal milestones.

• • Court and legal filings: Count the 30, 60, 90, or 365-day response windows used in civil procedure and the multi-year statutes of limitations that govern malpractice, contract, and consumer claims.
• • Contract and project due dates: Track net-30, net-60, and net-90 invoice payment windows, project milestones, lease notice periods, and insurance renewal deadlines.
• • License and permit windows: Calculate visa, professional license, and permit deadlines where missing the date triggers late fees or reapplication.
• • Personal milestone planning: Plan ahead for school enrollment, immigration paperwork, benefit enrollment periods, and any future dated event that needs a clean business-day reading.

The form pairs a start date with a duration and a unit. Days and weeks add a simple number of calendar days. Months and years preserve the day-of-month and roll the month and year, matching how Excel EDATE works. Two toggles add a business-day layer: skip-weekends pushes any Saturday or Sunday result to the next Monday, and skip-federal-holidays pushes any result on a federal holiday past that holiday.

For a generic add-or-subtract date math without the business-day layer, the Date Calculator answers the simpler form of the same calculation.

The deadline calculator resolves a raw deadline by adding or subtracting the duration in the chosen unit, then applies weekend and federal-holiday rollover only when those toggles are on. The result panel shows the raw and corrected deadline side by side.

• startDate: Calendar day the deadline period begins, treated as start-of-day in the local browser time zone.
• durationValue: Positive integer count of the chosen unit, between 1 and 9999.
• durationUnit: days, weeks, months, or years. Months and years preserve the day-of-month while rolling the calendar field.
• direction: after: deadline is start + duration. before: deadline is start - duration.
• skipWeekends: True: Saturday result rolls +2 days to Monday. Sunday result rolls +1 day to Monday.
• skipFederalHolidays: True: any result on a US federal holiday (or its observed date) rolls to the next non-weekend, non-holiday day.

The math is identical for legal, project, and personal deadlines, but the rollover behavior is what changes the result. A 30-day deadline that lands on a Saturday in a court setting is typically considered timely if filed the following Monday. The two toggles in the form let a user pick which convention applies.

According to Federal Rules of Civil Procedure, Rule 6, FRCP Rule 6 continues the period to the next non-weekend, non-holiday day when the last day falls on a Saturday, Sunday, or legal holiday

When the question is how much time remains until a fixed calendar target, the Date Countdown Calculator counts the gap in days, hours, and minutes.

Four ideas keep the deadline count predictable when the result lands on a weekend, a federal holiday, or a leap-year edge case.

Months and years are added with a day-of-month-preserving shift. Adding 1 month to January 31 lands on February 28 in a common year and February 29 in a leap year, not on March 3. The same rule applies to years.

For a clock-time view of the same interval, the Time Until Calculator produces the remaining days, hours, minutes, and seconds breakdown.

The form has six short fields. Pick a start date, type a duration, choose the unit and direction, and decide whether to roll weekends and US federal holidays.

1. 1 Pick a Start Date: Choose the calendar day the deadline period begins. The default is today, and any date between 1900 and 2100 is accepted.
2. 2 Type a Duration: Enter a positive integer count of the chosen unit, between 1 and 9999. A 30-day, 90-day, or 4-year statute all enter the same way.
3. 3 Choose the Unit: Use days or weeks for statute-of-limitations style periods. Use months or years for lease, contract, and license deadlines where the anniversary day matters.
4. 4 Pick the Direction: After start date moves the deadline forward. Before start date moves the deadline backward, useful for counting back from a known event.
5. 5 Decide on Weekend Rollover: Turn on skip-weekends for FRCP-style weekend rollover. Turn it off for pure calendar-day counts where the date itself is binding.
6. 6 Decide on Federal Holiday Rollover: Turn on skip-federal-holidays for the federal observance rule. Turn it off for deadlines that fall back to the raw calendar date regardless of holiday status.

A paralegal with a 30-day response window from June 14, 2026 types 30, picks days, direction 'after', leaves skip-weekends on, and leaves skip-federal-holidays off. The deadline calculator returns July 14, 2026 with no rollover. Switching the duration to 90 days and turning on skip-federal-holidays returns October 13, 2026 after rolling past Columbus Day.

A pure calendar-day gap between two arbitrary dates is what the Days Between Dates Calculator shows when no duration unit is involved.

A single corrected deadline line is the main answer, but the result panel shows the raw deadline, the rollover reason, and the day-of-year offset, so a user can audit the math without leaving the page.

• • Friday-the-13th style edge cases: Catches Saturday, Sunday, and federal-holiday landings in one pass, so a user does not have to recheck the result against a separate calendar.
• • Court-style weekend rollover: Implements the same weekend rollover used by FRCP Rule 6, which most US federal courts apply to deadlines measured in days.
• • Forward and backward counts: Counts forward from a start date or backward from a known event, so the same deadline calculator covers both deadline-after-the-fact and deadline-before-the-fact planning.
• • Federal holiday awareness: Tracks the 11 US federal holidays under 5 U.S.C. 6103, including the Saturday-to-Friday and Sunday-to-Monday observance shift for fixed-date holidays.

Because the corrected deadline and the raw deadline are both displayed, a user can quickly tell whether the rollover changed the result. If the two lines match, the toggles had no effect. If the corrected deadline is later, the user knows to plan for the rollover and to confirm the rule with the controlling document. For multi-step filings, the same form can be reused with the corrected deadline as the new start date.

A product or document that has a fixed shelf life rather than a court period is what the Expiration Date Calculator tracks with a start date and a duration in days, weeks, months, or years.

The deadline headline is exact, but the corrected result can shift depending on the day of the week, federal-holiday observance, and the leap-year structure of the target year.

• • The federal-holiday list reflects the standard 11 holidays under 5 U.S.C. 6103. State courts, agencies, and private contracts sometimes observe additional or different days, and the calculator does not know which calendar applies.
• • The weekend rollover applies Saturday +2 and Sunday +1 for forward counts and the reverse for backward counts. Some jurisdictions apply weekend rollover only to forward counts, so a user should confirm the convention for the controlling document.

A subtle limitation appears around year boundaries. The corrected deadline can land in a different calendar year from the raw deadline when the rollover shifts past December 31. The status line still reports the new year's day-of-year offset, so the year crossing is transparent.

According to US Office of Personnel Management (OPM) Federal Holidays, OPM publishes 11 federal holidays per year, including New Year's Day, MLK Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas

According to ISO 8601:2019 (Dates and times), ISO 8601:2019 specifies the Gregorian calendar day count used by every modern date library, with January 1 as day 1 and December 31 as day 365 (or 366 in a leap year)

For the same interval expressed as a span between two calendar dates, the Date to Date Calculator reverses the question and answers the gap rather than the resulting date.