Calculate differences between dates, add or subtract time
Add: Add years, months, and days to a date to find a future date
Subtract: Subtract years, months, and days from a date to find a past date
Difference: Calculate the exact time difference between two dates
Calculate exact time between two dates in years, months, days, weeks, and hours
Add years, months, and days to any date to find future dates for planning
Subtract time periods from dates to calculate past dates and deadlines
View results in months, weeks, days, and hours for maximum flexibility
Handles leap years and varying month lengths for precise date calculations
Easy DD/MM/YYYY input format with instant real-time calculations
Select the "Difference" mode, enter the start date and end date in DD/MM/YYYY format, and the calculator will automatically show the exact difference in years, months, days, weeks, and hours. The calculator accounts for leap years and varying month lengths for accurate results.
Select "Add" mode, enter your starting date, then input the number of years, months, and days you want to add. The calculator will instantly display the resulting future date with the day of the week.
Yes! Use the "Difference" mode and enter today's date as the start date and your target future date as the end date. The calculator will show exactly how many days, weeks, months, and hours remain until that date.
Yes, the date calculator automatically accounts for leap years (including February 29th) and varying month lengths (28-31 days) to ensure all calculations are accurate.
Subtract mode is useful for calculating past dates or working backwards from a deadline. For example, if you need to know what date was 90 days before a specific date, enter that date and subtract 90 days (or 3 months).
This calculator shows total calendar days. To calculate business days, you can use the total days result and manually subtract weekends. For example, roughly 5 business days equal 7 calendar days.
Use DD/MM/YYYY format with separate fields for day (1-31), month (1-12), and year (1900-2100). The calculator validates inputs to prevent invalid dates like February 30th.
Absolutely! The date calculator is perfect for project management, calculating project durations, setting milestones, tracking deadlines, planning events, and determining delivery dates. Use Add mode to find future deadlines and Difference mode to track time remaining.