EasyFilesConverter

Day of the week & week number

Find the weekday of any date, its ISO week number, day of the year, quarter and whether it is a leap year.

Free · No sign-up · Your files are processed on your device and never uploaded
How to use Day of the week & week number
  1. Fill in a few fields…
    1
    Paste or type
    Put your content in the box - or try the example.
  2. Result appears instantly
    2
    Watch the result
    Pick the options you want - the defaults suit most files.
  3. TXTCopy the result
    3
    Download the result
    Ready in seconds. Your file never left your device.
Features
  • Answer updates as you type.
  • Clear breakdown you can copy.
  • Works on phone and desktop.
Free and private
The calculation runs in your browser. Nothing you type is sent or stored, and there is no limit.
Questions
Which week numbering is used?
ISO 8601: weeks start on Monday and week 1 contains the first Thursday.
Is it free?
Yes - free and unlimited, with no sign-up and no watermark.
More ways to use Day of the week & week number
What week is it?
More calculators
All tools →
Crypto converter
Live prices: convert Bitcoin, Ethereum and 100 coins to USD, INR, EUR and more.
Percentage calculator
Work out X% of Y, what percent X is of Y, percentage increase or decrease, and exam marks as a percentage.
Age calculator
Find your exact age in years, months, days, weeks and days, the weekday you were born and days to your next birthday.
Loan / EMI calculator
Calculate the monthly payment (EMI) of a loan or mortgage, the total interest and a year-by-year schedule.