Date Converter

Instantly transform dates into any global standard format.

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Need Islamic Calendar?

Go to Hijri Converter
Standard Long Format
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US Format-
ISO 8601-
Unix Time-
Julian Date-
Day of Year-
Week Number-
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Date Converter: Your Guide to Global Time Formats

Navigate the world of chronological data with ease. Convert any Gregorian date into ISO standards, Unix timestamps, Julian days, and more instantly.

Have you ever tried to fill out an international form and paused at the date section? In the United States, we usually write Month/Day/Year. But travel across the ocean to Europe, and you’ll find Day/Month/Year is the law of the land. If you’re a software developer or a data scientist, you’re likely staring at ISO 8601 or Unix Timestamps instead.

Dates are the anchors of our history and the blueprints of our future. However, because different industries and cultures use different systems, it’s easy for things to get lost in translation. Our Professional Date Converter is here to fix that. It’s more than just a simple "date switcher"—it’s a precision engine designed to translate your specific moment in time into any global standard, ensuring your data is always accurate and compatible.


How to Use the Converter

We believe that advanced tools shouldn't be complicated. We’ve designed this dashboard to give you every major format in a single glance.

  1. Pick Your Date: Use the "Gregorian Date" picker on the left. You can choose today, a date in the far past, or one in the future.
  2. Instant Analysis: As soon as you select the date, the dashboard on the right updates. You don't even have to click a "Submit" button.
  3. Explore the Formats: Look through the cards to see your date in US format, technical ISO format, or even astronomical Julian dates.
  4. One-Click Copy: Found the format you need? Click the "Copy Results" button to save it to your clipboard instantly.

Common Date Formats Explained

Why are there so many ways to write a date? Each system was created to solve a specific problem. Here is a breakdown of the formats our tool provides:

ISO 8601 (The Tech Standard)

Written as YYYY-MM-DD. This is the gold standard for computers. Because it goes from largest unit to smallest, it allows computers to sort dates alphabetically and numerically without getting confused.

Unix Timestamp (The Developer Language)

This is the total number of seconds that have passed since January 1, 1970. It’s used by almost every server on the planet to track time consistently across different timezones.

Julian Date (The Astronomer’s Tool)

Mainly used in astronomy and military logistics, this is a continuous count of days since the beginning of the Julian Period. It eliminates the confusion of months and years entirely.

Day of Year & Week Number

Essential for supply chain management and project planning. Knowing that today is "Day 302" or "Week 44" helps businesses track production cycles accurately.


Who Needs a Date Converter?

You might be surprised at how often professional date conversion is required in the real world:

  • Software Developers: When building apps, you often need to convert a user’s birth date into a Unix timestamp to store it in a database.
  • Historians & Genealogists: Old records often use different formats. Converting them to a "Standard Long Format" makes family trees easier to read.
  • Logistics Managers: Many shipping companies use the "Day of Year" (also called Julian day in some circles) to label perishable goods.
  • International Students: Converting between the US standard (MDY) and the international standard (DMY) is a daily necessity.

The Hijri Calendar Option

While the Gregorian calendar is the international standard for business, the Hijri (Islamic) calendar is vital for billions of people tracking religious observances like Ramadan or Eid.

Because the Hijri calendar is lunar-based, its dates "slide" relative to the Gregorian calendar every year. Our tool provides a dedicated Hijri Date Converter button for those who need to bridge the gap between these two very different systems.


Frequently Asked Questions

Yes. Our algorithm is built on standard chronological libraries that account for every leap year in the Gregorian system. Whether you pick a date from 1904 or 2024, the day of the week and day-count will be 100% correct.

A Unix timestamp is a way for computers to measure time. It counts the number of seconds from the "Unix Epoch"—which is 00:00:00 UTC on January 1, 1970. It’s useful because it doesn't change based on where you are on Earth.

No. Your privacy is important to us. All conversions happen right inside your browser using JavaScript. No data is ever sent to our servers, and your dates are never saved.

Yes, you can go back hundreds of years. However, please note that the Gregorian calendar was adopted at different times in different countries (some in 1582, others not until the 1900s). Our tool uses the Proleptic Gregorian calendar standard.

Simplifying Time Management

In a globalized world, the ability to speak the same "time language" is invaluable. Whether you're coding a new application, shipping a package across borders, or just satisfying your curiosity, our Online Date Converter provides the accuracy and speed you need.

Bookmark this page to ensure you always have a professional-grade time tool ready whenever you encounter a strange date format.

Ready to Convert?

Stop worrying about format errors. Use our Advanced Date Dashboard above to transform any date into any standard instantly.

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