⏱Date & Time
// Calculate date differences, convert timezones, format dates, and work with time utilities.
Calculate the exact time between two dates
Add or subtract time from any date
Convert time between any timezones
See current time in cities worldwide
Convert between ISO 8601 and readable date formats
Find the ISO week number for any date
Calculate exact age from a birthdate
Count down to any date and time
Simple stopwatch with lap times
Convert between 12-hour and 24-hour time
Calculate working days between two dates
Convert between seconds, minutes, hours, and days
Convert dates between different format strings
Check if any year is a leap year
No client-side tools in this category.
#About Date & Time
Calculate date differences, convert timezones, format dates, and work with time utilities. All tools in this category run entirely in your browser with no server-side processing. Your data stays on your device.
Each tool is designed for speed and simplicity. Paste your input, configure options if needed, and copy the result with one click. No sign-up, no installation, no limitations.