Free Date Tools
Date math, done for you.
Count the days between two dates, work out an exact age, add or subtract days, or see how long until any holiday. No sign-up.
Calculators
Days Between Dates →
Count the exact number of days between any two dates.
Age Calculator →
Find an exact age in years, months, and days from a birth date.
Add or Subtract Days →
Add or subtract days, weeks, or months from any date.
How many days until…
35
until Halloween
61
until Thanksgiving
267
until Summer
183
until Easter
175
until Spring
141
until Valentine's Day
90
until Christmas
97
until New Year's Day
267
until Father's Day
225
until Mother's Day
247
until Memorial Day
172
until St. Patrick's Day
281
until Independence Day
345
until Labor Day
221
until Cinco de Mayo
Popular date countdowns
238
until May 22
239
until May 23
248
until June 1
278
until July 1
97
until January 1
66
until December 1
5
until October 1
340
until September 1
Everything date-related, in one place
DateCalcs is a small set of free date tools. Whether you need the exact number of days until a deadline, someone's precise age, or a countdown to the next holiday, each tool runs instantly in your browser — no account, no ads blocking the answer.