Free Date Calculators
Every date calculator on DateCalcTools. Pick a tool to count days, weeks, months, business days, ages, or build a custom countdown — all client-side and free.
How Many Days Until
Find out exactly how many days, weeks, and months remain until any future date.
Open calculatorDate Difference Calculator
Compare two dates and see the difference in days, weeks, months, and years.
Open calculatorBusiness Days Calculator
Count the working days between two dates, with weekends excluded.
Open calculatorAge Calculator
Calculate your exact age in years, months, and days from your birth date.
Open calculatorAge in Days Calculator
Find out the total number of days you have been alive.
Open calculatorCountdown Calculator
Create a simple countdown to any upcoming event or special date.
Open calculator
Frequently asked questions
Are all calculators free?
Yes. Every calculator on this page is free and works in your browser without signup.
Do these calculators work on mobile?
Yes. The site is fully responsive and tested on phones, tablets, and desktops.
Which calculator should I use for working days?
Use the Business Days Calculator to count days while excluding weekends.
Which calculator finds the date from today plus N days?
Visit the Date From Today section for ready-made answers (7, 30, 60, 90 days, etc.) or use the Date Difference Calculator.