Free Date & Time Calculators

Counting days? Get your exact Age, find the gap with the Date Calculator, or count down to the next Holiday.

Date & time math

Ages, gaps, durations, and countdowns.

Your exact age in years, months, and days, plus totals and a next-birthday countdown.

Open

Calculate the number of days between two dates, or add/subtract days from a date.

Open

Calculate the time between two dates and times — days, hours, minutes, and seconds between any two moments.

Open

Live countdown to any date or holiday — days, hours, minutes, and seconds.

Open

Planners & wall calendars Keep dates, countdowns, and deadlines in view. Shop on Amazon → affiliate

Every other date and time calculator.

Count working days between two dates (skip weekends & holidays), or add/subtract business days — auto US federal holidays, custom weekends.

Open

Build a live countdown to any date or event, then share a link or embed the ticking widget on any website.

Open

Predict snow day likelihood based on weather forecasts and historical data for your location.

Open

Total weekly work hours from daily clock-in/out and breaks, with overtime and pay.

Open

More Date & Time gear & guides Top-rated picks to go with these date & time tools. Shop on Amazon → affiliate

As an Amazon Associate we earn from qualifying purchases — at no extra cost to you. Affiliate disclosure.