Modified Julian Day to Julian Day

Convert mjd (MJD) to jd (JD) with formulas, examples, and conversion tables.

MJD
JD
1 MJD = 2400001.5 JD
Full precision:2400001.5 JD
Step-by-Step Solution

To convert 1 mjd to jd, we multiply by 1 because one modified julian day equals exactly 1 jd.

1 modified julian day = 1 jd

Since each modified julian day contains 1 jd, we multiply our value by this factor:

1 × 1 = 2400001.5 jd

So 1 mjd = 2400001.5 jd.

✓Quick check: 2400001.5 ÷ 1 = 1 mjd
↔ Julian Day to Modified Julian Day

How to Convert MJD to JD

To convert mjd to jd, multiply the value by 1.

The Formula

JD = MJD × 1

Key Fact

1 modified julian day = 1 jd

Tip: To convert jd back to mjd, divide by 1.

Example Conversions

Example 1: 1 MJD = 2400001.5 JD
1 × 1 = 2400001.5
Example 2: 5 MJD = 2400005.5 JD
5 × 1 = 2400005.5
Example 3: 10 MJD = 2400010.5 JD
10 × 1 = 2400010.5

MJD to JD Table

MJDJD
0 MJD2400000.5 JD
86400 MJD2486400.5 JD
604800 MJD3004800.5 JD
1765163406 MJD1767563406.35 JD

1 Modified Julian Day in Other Units

Unit1 MJD =
Modified Julian Day to Unix Timestamp-3506630400 Unix
Modified Julian Day to ISO 8601-3506630400 ISO
Modified Julian Day to Julian Day2400001.5 JD
Modified Julian Day to Excel Serial Date-15017 Excel

Related Conversions

Unix Timestamp to Julian DayJulian Day to Unix TimestampUnix Timestamp to Excel DateExcel Date to Unix TimestampUnix Timestamp to Modified Julian DayModified Julian Day to Unix Timestamp