Calculate a future or past date by adding or subtracting any number of days from a start date. Optionally skip weekends to count only business days.
How To Use This Free Date Calculator Tool
This calculator finds a future or past date by adding or subtracting days from any starting date. Enter your start date, choose whether to add or subtract, and type in the number of days. Click “Calculate Date” to see the result instantly.
Use the “Today” button to quickly set the start date to the current date. If you need to count only business days (Monday through Friday), check the “Skip weekends” option — the calculator will automatically jump over Saturdays and Sundays when counting.
The result card shows the full date including the day of the week, a breakdown in years, months, and days, plus useful details like the week number and what day of the year it falls on. This is especially helpful for calculating contract deadlines,
project milestones, or any date a set number of days in the future or past.
What date is 90 days from today?
Enter today’s date, select “Add,” type 90, and click Calculate. The tool instantly shows the exact date 90 days from now, including the day of the week and a full breakdown in months and days.
How do I calculate a date 30 business days from now?
Set your start date, enter 30 in the days field, and check the “Skip weekends” checkbox. The calculator will count only Monday through Friday, skipping all Saturdays and Sundays.
Can I subtract days to find a past date?
Yes. Change the operation dropdown from “Add” to “Subtract” and enter the number of days. The calculator will count backward from your start date to find the earlier date.
Does the business days option account for public holidays?
The business days option skips Saturdays and Sundays only. Public holidays vary by country and region, so you may need to manually adjust by one or two days if your calculation spans a holiday.
What is the maximum number of days I can add or subtract?
You can add or subtract up to 99,999 days (about 274 years), which covers virtually any practical date calculation.
