Date Calculators
All date math calculators in one place — count days between dates, add or subtract from a date, focus on months or years, count business or school days, and more.
Core date calculators
Specialized date math
- Date Add / Subtract CalculatorAdd or subtract days, weeks, months, or years from any date.
- Months Between DatesFind the exact number of months between two dates.
- Years Between DatesFind the exact number of years between two dates.
- School Days CalculatorCount the school days (Mon–Fri) between two dates.
- Working Days CalculatorCount working days between two dates with configurable weekends.
Quick answers
Pre-computed pages for the most-searched date questions.
Frequently asked questions
Which calculator should I use to subtract days from a date?
Use the Date Add / Subtract Calculator. Pick "Subtract" and choose your unit.
How do I count working days between two dates?
Use the Business Days Calculator or Working Days Calculator. They share the same engine with configurable weekend patterns.
What about months or years specifically?
Use the Months Between Dates Calculator or Years Between Dates Calculator for focused breakdowns.