How to use the date calculator
- Pick a start date (it starts on today).
- Enter a number and choose days, weeks, months, years or business days.
- Choose Add for a future date or Subtract for a past one. The answer updates as you type.
Date calculator rules
Days and weeks are exact: one week is seven days. Months and years keep the day of the month and step back to the month's last day when needed. Business days skip weekends only. All dates use the Gregorian calendar, including leap years.
Quick answers
- 7 days from today
- 10 days from today
- 14 days from today
- 15 days from today
- 21 days from today
- 30 days from today
- 45 days from today
- 60 days from today
- 90 days from today
- 100 days from today
- 120 days from today
- 150 days from today
- 180 days from today
- 365 days from today
Frequently asked questions
How does the date calculator add months?
It keeps the same day of the month. If that day does not exist in the target month, it uses the last day instead, so January 31 plus one month is February 28 (or 29 in a leap year).
What are business days?
Monday to Friday. The calculator skips Saturdays and Sundays but not public holidays, because those differ by country, state and employer.
How do I add days to a date in Excel or Google Sheets?
Type =A1+30 to add 30 days to the date in A1. Use =EDATE(A1,3) to add 3 months (it also uses the last day of the month when needed, like this calculator), and =WORKDAY(A1,10) to add 10 business days.
Can I find a date in the past?
Yes. Press "Subtract" to count back from the start date, for example to find the date 90 days ago.
Counting the gap between two dates instead? Use the day counter. Waiting for a holiday? See every holiday countdown.