General Date Calculators

This page provides several free date calculator tools. You can add or subtract days from a date, calculate business days, count the days between two dates, or determine the weekday for any calendar date.

These calculators perform basic date arithmetic commonly used in planning and scheduling, although they are general-purpose tools and do not account for jurisdictional rules, holidays, or procedural deadlines.

In some situations, it is more useful to think in terms of weeks rather than individual days. This calculator measures the total time between two dates expressed in weeks, including partial weeks:

Looking for rule-based deadline tools?

See the Texas Answer Deadline Calculator, explore Texas discovery deadlines, or click here for Federal deadlines.

When planning, scheduling, or tracking events, it’s often necessary to perform simple date math like finding a date a certain number of days from another date, calculating the number of days between two dates, or understanding what day of the week a particular date falls on. This page features several date calculators that help you perform common tasks without needing to think through the math yourself. Whether you need to add or subtract a number of days from a given date, determine how many days separate two dates, compute a new date by adding business days while excluding weekends, or simply find out what day of the week a date corresponds to, these tools may be helpful. The calculators are designed to work with standard calendar dates and do not account for holidays, leap seconds, or regional observance calendars, so they should be used as general-purpose aids rather than definitive legal or procedural deadline tools.

If you’re working with legal deadlines such as court filings, response dates, or statute deadlines, be aware of the local and procedural rules that apply to your case. Using these general date calculators can help you prepare and check your work, but always cross-reference with the applicable rules or a rule-based calculator when precision is essential.

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