📅 Date & Time

Date & Time

Date and time calculations using your browser.

Age Calculator

Calculate age from date of birth.

Date of birth Result will appear here.

Calculate a date before or after a number of days.

Start date Number of days

Result will appear here.

Find the weekday for a date.

Choose a date Result will appear here.

Count days until or since a date.

Target date Result will appear here.

Count weekdays between two dates (inclusive).

Start date End date

Result will appear here.

Calculate duration between two times; end time may cross midnight.

Start time End time

Result will appear here.

Find the ISO week number for a date.

Date

Result will appear here.

Find how many days a month contains.

Year Month (1–12)

Result will appear here.

Show the browser timezone and current UTC offset.

Result will appear here.

Tools are provided as-is. Verify important results independently. Do not enter sensitive information unless you understand the operation.