Welcome to Date Calculator Hub

Your one-stop destination for all date and time calculations. Choose from our collection of free, easy-to-use calculators.

🎂 Age Calculator

Calculate your exact age in years, months, and days. Perfect for finding out how old you are down to the day.

Calculate Age

📅 Days Between Dates

Calculate the number of days between any two dates. Great for planning events and tracking time periods.

Calculate Days

⏰ Countdown Timer

Set a target date and watch the live countdown. Perfect for tracking important events and deadlines.

Start Countdown

📆 Days Until Calculator

Find out how many days are left until a specific date. Great for planning and anticipation.

Calculate Days Until

🎉 Anniversary Calculator

Calculate how long ago a specific date was. Perfect for anniversaries, milestones, and special dates.

Calculate Anniversary

🐸 Leap Year Calculator

Check if any year is a leap year. Understand leap year rules and find leap years from 1900 to 2100.

Check Leap Year

📊 Week Number Calculator

Find out what week number any date falls in. Uses ISO 8601 standard for accurate week numbering.

Calculate Week

💼 Business Days Calculator

Calculate business days between two dates excluding weekends. Perfect for project planning and deadlines.

Calculate Business Days

🌍 Time Zone Calculator

Convert time between different time zones instantly. Free time zone converter with 200+ time zones worldwide.

Convert Time Zone

🤱 Pregnancy Calculator

Calculate your due date and pregnancy weeks. Free pregnancy calculator with conception date and timeline.

Calculate Pregnancy

🏖️ Retirement Calculator

Calculate days until retirement. Free retirement calculator to plan your retirement timeline.

Calculate Retirement

🎉 Holiday Calculator

Calculate days until next holiday. Free holiday calculator with major holidays including Christmas and New Year.

Calculate Holiday

🍂 Season Calculator

Calculate current season and days until next season. Find out what season it is and when the next one begins.

Calculate Season

Frequently Asked Questions

How accurate are the calculators?

All our calculators are highly accurate and calculate exact results down to the day, including leap years and different month lengths. They use JavaScript's built-in Date object for precise calculations.

Can I use these calculators on mobile devices?

Absolutely! All our calculators are fully responsive and work perfectly on smartphones, tablets, and desktop computers. The interface automatically adapts to different screen sizes.

Are the calculators free to use?

Yes, all our date calculators are completely free to use with no registration required. No hidden fees, usage limits, or premium features - everything is 100% free!

Do you store my personal data?

No, all calculations are performed locally in your browser. We don't store any personal information, dates you enter, or calculation results. Your privacy is completely protected.

Can I calculate days between two birthdays?

Yes! Use our "Days Between Dates" calculator to find the exact number of days between any two dates, including birthdays. Perfect for tracking time between special events.

Does the countdown timer work in real-time?

Yes, our countdown timer updates every second to show the exact time remaining until your target date and time. It works in real-time and automatically stops when it reaches zero.

What date range do the calculators support?

Most of our calculators support dates from 1900 to 2100, which covers the vast majority of practical use cases. Some calculators may have different ranges based on their specific functionality.

Can I use these calculators offline?

Yes, once the page is loaded, you can use most calculators offline. However, some features like time zone calculations may require an internet connection for accurate time zone data.

Date Calculator Tips & Guides

How to Calculate Your Exact Age

Learn how to calculate your precise age in years, months, and days using our free age calculator. Perfect for birthdays, anniversaries, and milestone celebrations.

Calculate Your Age →

Planning Events with Days Between Calculator

Discover how to use our days between dates calculator for event planning, project timelines, and tracking important periods in your life.

Calculate Days →

Understanding Leap Years

Everything you need to know about leap years, including how they affect date calculations and why they exist in our calendar system.

Check Leap Years →

Business Days vs Calendar Days

Learn the difference between business days and calendar days, and when to use each for accurate project planning and deadline calculations.

Calculate Business Days →

Time Zone Conversion Made Easy

Master time zone conversions for global events, meetings, and travel planning. Learn how to convert between different time zones accurately.

Convert Time Zones →

Pregnancy Timeline Calculator

Track your pregnancy journey with our comprehensive calculator. Find due dates, conception dates, and pregnancy milestones with ease.

Calculate Pregnancy →