How many days in 1 millennium?
The answer is 365000.
We assume you are converting between day and millennium.
You can view more details on each measurement unit: days or
millennium
The SI base unit for time is the second.
1 second is equal to 1.1574074074074E-5 days, or 3.1709791983765E-11 millennium.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between days and millennia.
Type in your own numbers in the form to convert the units!

››Date difference between calendar days

You may also want to find out how many days
are between two dates on the calendar. Use the
date calculator
to get your age in days or measure the duration of an event.

››Want other units?

You can do the reverse unit conversion from
millennium to days, or enter any two units below:

A continous period of 24 hours which, unless the context otherwise requires, runs from midnight to midnight.

››Definition: Millennium

A millennium is a period of time equal to one thousand years. There are two main viewpoints about naming millennia and there was a popular debate leading up to the celebrations of the year 2000 as to whether 2000 was the beginning of a new millennium. Historically, there has been debate around the turn of the millennium, centuries and decades before.

››Metric conversions and more

ConvertUnits.com provides an online
conversion calculator for all types of measurement units.
You can find metric conversion tables for SI units, as well
as English units, currency, and other data. Type in unit
symbols, abbreviations, or full names for units of length,
area, mass, pressure, and other types. Examples include mm,
inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm,
metres squared, grams, moles, feet per second, and many more!