Julian Date Converter
Convert between Gregorian Date, Julian Day Number (JDN), and Modified Julian Date (MJD).
Gregorian → Julian
Julian → Gregorian
Why Choose Our Julian Date Converter 2026?
Our Julian Date Converter 2026 is a fast, accurate, and completely free online tool to convert Gregorian dates into Julian Day Number (JDN) and Modified Julian Date (MJD). Perfect for students, engineers, astronomers, and scientific calculations.
| Feature | BrooklynClick Tool | Other Tools |
|---|---|---|
| Free Access | ✅ Unlimited | ⚠️ Limited |
| MJD Support | ✅ Included | ❌ Not Available |
| Accuracy | ✅ Astronomical Standard | ⚠️ Varies |
| Mobile Friendly | ✅ Fully Responsive | ⚠️ Inconsistent |
| Instant Results | ✅ Yes | ⚠️ Slower |
Frequently Asked Questions (FAQs)
What is a Julian Date?
A Julian Date is a continuous count of days starting from noon on January 1, 4713 BC. It is widely used in astronomy and scientific calculations.
What is Julian Day Number (JDN)?
JDN is the integer-based day count used in astronomical time systems.
What is Modified Julian Date (MJD)?
MJD = JDN - 2400000.5, used for simpler and smaller numeric values in scientific systems.
Is this tool free?
Yes, this Julian Date Converter is completely free with no registration required.