What date calculations are available?

Available calculations include date addition/subtraction, date differences, age calculation, day of year (1-365/366), week numbers, day of week, business days, countdowns, and Unix timestamp conversion.

Can I format dates in international formats?

Yes, the tool supports various international date formats to help you convert dates into the format you need for different regions and applications.

How does timezone handling work?

The date calculator works with your local timezone automatically, ensuring accurate calculations based on your location without manual timezone adjustments.

Is the date calculator toolkit free?

Yes, this comprehensive date and time toolkit is completely free with no registration required. Perfect for project planning, age calculation, and time management.

Free Date Calculator & Converter - Complete Date & Time Toolkit

Welcome to the Date Converter & Calculator

This free online tool provides a comprehensive suite of date and time utilities. Whether you need to calculate the difference between dates, convert timestamps, format dates, or perform various date calculations, we've got you covered!

How to use: Simply select the tool you need below, enter your dates or values, and click the calculate button. All calculations are performed instantly in your browser. Your data is saved locally for convenience on your next visit. Press Enter in any input field to quickly calculate.

➕ Date Calculator

Add or subtract days, weeks, months, or years from a date.

Start Date:

Amount:

Unit:

Operation:

📏 Days Between Dates

Calculate the difference between two dates in various units.

First Date:

Second Date:

💼 Business Days Calculator

Calculate working days between dates (excludes weekends).

Start Date:

End Date:

⏳ Countdown Calculator

See how many days until (or since) a specific date.

Target Date:

Event Name (optional):

📝 Date Formatter

Format dates in various international formats.

Date to Format:

Format Style:

🔢 Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates.

Unix Timestamp:

Date & Time:

⏰ Time is in your local timezone

🎂 Age Calculator

Calculate exact age in years, months, and days with zodiac sign.

Birth Date:

Calculate Age As Of:

📊 Day of Year Calculator

Find out which day of the year any date is (1-365/366).

Select Date:

📈 Week Number Calculator

Find the ISO week number and quarter for any date.

Select Date:

📆 Day of Week Calculator

Find out what day of the week any date falls on.

Select Date: