Use our free date calculators to count days, calculate business days and find future or past dates.
Choose a tool below depending on what you want to calculate.
Business Days Calculator
Count the number of business days between two dates.
The calculator counts Monday through Friday as business days and also shows calendar days, weekend days and full weeks.
Days Between Dates Calculator
Calculate exactly how many days are between two dates.
The result includes total calendar days, complete weeks, weekdays and weekend days.
Date Calculator
Add or subtract days, weeks, months or years from any date.
Use it to calculate deadlines, future dates, previous dates and other calendar calculations.
Which date calculator should I use?
Choose Business Days Calculator when you want to exclude Saturdays and Sundays.
Choose Days Between Dates Calculator when you want to measure the distance between two dates.
Choose Date Calculator when you know how much time you want to add or subtract from a starting date.
For example:
| You want to know | Use this tool |
|---|---|
| How many days are between two dates? | Days Between Dates Calculator |
| How many working days are between two dates? | Business Days Calculator |
| What date is 30 days from now? | Date Calculator |
| What date was 6 months ago? | Date Calculator |
| How many weekdays are in a date range? | Business Days Calculator |
| How many weekends occur between two dates? | Days Between Dates Calculator |
Calculate days between two dates
The Days Between Dates Calculator calculates the exact distance between a start date and an end date.
It can show:
- Total calendar days
- Complete weeks
- Remaining days
- Weekdays
- Weekend days
- Approximate months
This is useful for travel planning, projects, deadlines, contracts and other date ranges.
Calculate business days
The Business Days Calculator counts Monday through Friday while excluding Saturday and Sunday.
Business-day calculations are commonly used for:
- Delivery estimates
- Project deadlines
- Payment terms
- Work schedules
- Administrative deadlines
- Contract periods
Public holidays are currently not automatically excluded.
Add or subtract days from a date
Use the Date Calculator when you want to move forward or backward from a specific date.
You can add or subtract:
- Days
- Weeks
- Months
- Years
The calculator also shows the resulting weekday, ISO week number and common numerical date formats.
Calendar days and business days
A calendar day can be any day of the week, including Saturday and Sunday.
A business day normally means Monday through Friday.
For example, a seven-day Monday-to-Sunday period contains:
- 7 calendar days
- 5 business days
- 2 weekend days
Which calculation you need depends on what you are planning.
Dates, weeks and calendars
Date calculations often involve more than just counting days.
You may also need to know:
- Which weekday a date falls on.
- Which ISO week a date belongs to.
- How many days remain until another date.
- Whether a date falls on a weekend.
- How dates appear in different numerical formats.
You can find the current week number or browse the calendar for additional date information.
More date tools
You may also find these pages useful:
Frequently asked questions
What is a date calculator?
A date calculator is a tool that performs calculations using calendar dates. It can count days between dates, calculate business days or find a future or previous date.
How do I calculate the number of days between two dates?
Use the Days Between Dates Calculator. Select a start date and an end date to see the difference.
How do I calculate working days between dates?
Use the Business Days Calculator. It counts Monday through Friday and excludes Saturday and Sunday.
How can I calculate a date 30 days from now?
Use the Date Calculator, choose Add, enter 30 and select Days.
Can I calculate dates in the past?
Yes. The Date Calculator can subtract days, weeks, months or years from any selected date.
Are weekends included in date calculations?
It depends on the tool. The Days Between Dates Calculator includes calendar days, while the Business Days Calculator excludes Saturday and Sunday from its main business-day result.
Are the calculators free?
Yes. The date calculators on Today-Date.com are free to use.