Date Calculator & Tools
Free date calculators for everyone. Calculate days between dates, add or subtract time, find your exact age, count business days, and track countdowns to holidays.
Date Calculation Tools
Days From Today
Calculate future dates by adding any number of days to today's date. Perfect for deadline planning and scheduling.
Days Between Dates
Find the exact number of days, weeks, months between any two dates. Comprehensive interval measurement.
Age Calculator
Determine exact age in years, months, and days. Includes zodiac signs and birthday countdown.
Business Days Calculator
Calculate working days excluding weekends and optionally holidays. Essential for professional scheduling.
Week Number
Find the current week number or week number for any date. ISO and US conventions supported.
Countdown Calculator
Track days remaining until Christmas, New Year, and any special occasions or deadlines.
Date Difference
Comprehensive breakdown showing years, months, weeks, days, hours between dates.
Add Days to Date
Add any number of days, weeks, or months to a specific date. Flexible date arithmetic.
Months From Today
Find exact dates by month. Calculate 3, 6, 12, or any months from now for subscriptions and planning.
Days Ago
Find past dates by counting backward. Check warranty dates, return windows, and payment deadlines.
Leap Year Calculator
Check if any year is a leap year. See upcoming and past leap years at a glance.
Popular Countdowns
About DateTools
DateTools provides free, accurate date calculators for everyday use. Our tools handle leap years, different month lengths, and timezone differences automatically.
Whether planning project deadlines, tracking medical appointments, calculating contract periods, or counting down to celebrations, DateTools delivers precise results instantly. All tools function client-side for immediate response without network delays.