Free tools for calculating ages, counting days, converting time zones, and working with dates.
Enter your birthday to find your exact age in years, months, and days, plus a countdown to your next birthday.
Calculate Age →Find the exact number of days, weeks, months, and working days between any two dates.
Calculate Days →Add or subtract days, weeks, months, or years from any date to find the resulting date.
Calculate Date →Live countdown to any future date. Preset buttons for Christmas, New Year, Summer, and more.
Start Countdown →Convert time between major world time zones including ET, PT, GMT, CET, JST, and AEST.
Convert Time →Convert between Unix epoch timestamps and human-readable dates. Shows the current timestamp live.
Convert Timestamp →Our date and time calculators help you work with dates quickly and accurately. Whether you need to find out your exact age, count business days between dates, plan ahead with date arithmetic, or convert between time zones, these tools provide instant results with no signup required.
All calculations are performed locally in your browser for maximum speed and privacy.