Date Calculator
Calculate days between dates or add/subtract days.
Date Calculator Online — The Complete Guide
Use our free date calculator online to find days between dates, add or subtract days from any date, and answer questions like how many days until a specific event. Essential for project planning and countdowns.
Days Between Dates Calculator
Our date difference calculator computes the exact number of days between any two dates. Perfect for calculating project durations, time until deadlines, or days since a past event. Results include total days, weeks, months, and years.
Add Days to Date
Need to add days to date? Enter a start date and number of days to find the resulting date. This is invaluable for calculating due dates, delivery windows, warranty expirations, or any deadline counting from a specific start date.
Subtract Days from Date
Going backwards? Subtract days from date to find past dates. Enter today and subtract 90 days to find when a quarterly period started, or calculate when an event occurred based on days ago information.
Tips for Date Calculations
- The calculator automatically accounts for leap years
- Use the date picker for easier date selection
- Results show both calendar days and business days when relevant
- Handles varying month lengths automatically for accurate results