Date Calculators
Choose the date calculation entry you need from one page. These tools count days between two dates or add and subtract calendar time directly in your browser.
Popular date calculator utilities
Date Calculators guide
Free browser-based date calculators for days between dates, date duration, date add, and business day estimates.
Choose the date calculation entry you need from one page. These tools count days between two dates or add and subtract calendar time directly in your browser.
Best for
- Count total days and weeks between two dates.
- Estimate weekdays between dates, excluding weekends only.
- Add months, weeks, or days to a start date.
- Check simple calendar spans before using a specialized scheduling system.
Limit
Date calculators provide browser-local calendar estimates only. They do not include public holidays, time zones, time of day, court rules, payroll policies, shipping guarantees, or country-specific business calendars.
FAQ
Which date calculator should I use?
Use Date Calculator for the main tool, Days Between Dates for total day counts, Date Duration Calculator for years/months/days spans, Date Add Calculator for adding calendar time, and Business Days Calculator for weekday estimates.
Does the business days calculator include holidays?
No. It counts Monday through Friday only and does not remove public holidays or company closures.
Can I use it for legal or payroll deadlines?
No. These are quick browser date calculations. Confirm legal, payroll, billing, shipping, and compliance deadlines with the correct rule set.