Date Calculator
Calculate difference between dates or add/subtract time from a date
Instantly calculate the difference between two dates or add/subtract days, weeks, months, or years — accurate, private, and completely free.
Calculate difference between dates or add/subtract time from a date
Easily calculate the number of days between two dates or add/subtract time with our free online Date Calculator — fast, accurate, and simple to use.
Choose between calculating the difference between two dates or adding/subtracting time from a specific date.
Use our easy date picker or quick presets like "Today" to input your dates and time values.
Receive detailed breakdowns including years, months, weeks, days, and even seconds with clear formatting.
Fast, accurate, and private — the easiest way to calculate date differences or add/subtract days online.
Calculate date differences AND add/subtract days, weeks, months, or years - all in one tool.
Precise calculations accounting for leap years, month variations, and daylight saving time.
Get comprehensive results in multiple formats: years, months, weeks, days, hours, minutes, and seconds.
Your dates and calculations never leave your browser. No data storage or tracking.
Fully responsive design works perfectly on desktop, tablet, and mobile devices.
No hidden costs, watermarks, or limitations. Calculate unlimited times without registration.
See how our free online Date Calculator helps plan projects, events, finances, and more.
Calculate project timelines, deadlines, and milestone dates for effective planning.
Countdown to events, calculate lead times, and schedule preparation activities.
Calculate loan durations, investment maturity dates, and payment deadlines.
Calculate semester durations, assignment due dates, and study timelines.
Calculate employment durations, probation periods, and payroll cycles.
Track vacations, countdown to birthdays, plan trips, and manage personal goals.
Answers to common questions about using our date calculator
Select "Date Difference" mode, enter your two dates, and click calculate. You'll get a detailed breakdown showing the exact time between them in years, months, weeks, days, and more.
Yes! Choose "Add/Subtract" mode, enter your base date, select add or subtract operation, and input the time units you want to calculate. Perfect for finding future or past dates.
Our calculator is 100% accurate and accounts for leap years, varying month lengths, and daylight saving time adjustments. You get precise results every time.
Absolutely! The calculator is fully responsive and works seamlessly on smartphones, tablets, and desktop computers. No app download required.
Yes. All calculations happen locally in your browser. Your dates and results are never stored, transmitted, or shared - ensuring complete privacy.
Currently, our calculator provides total calendar days. For business day calculations excluding weekends, we recommend using our dedicated business day calculator tool.