Day of the Week

🎂

Age Calculator by Birthday

Calculate your exact age in years, months, and days from your birthday

📆

Days Between Dates Calculator

Find the exact number of days between any two dates

⏱️

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates

🌍

World Timezone Converter

Convert times across different world timezones instantly

💼

Business Days Calculator

Count business days between dates, excluding weekends and holidays

📅

Date Format Converter

Convert dates between ISO, Unix, MM/DD/YYYY, and all formats

⏳

Countdown Timer

Live countdown to any target date and time

⏱️

Time Duration Calculator

Add or subtract two time durations in hours, minutes, seconds

📆

ISO Week Number Calculator

Find ISO week number, day of year, quarter, and leap year info

⏱️

Stopwatch & Timer

Online stopwatch with lap times and a countdown timer — no install needed

🍅

Pomodoro Timer

Focus timer using the Pomodoro Technique. 25-min sessions with short and long breaks

🗺️

Timezone Meeting Planner

Find the best meeting time across multiple time zones with overlap visualization

➕

Date Add/Subtract

Add or subtract days, weeks, months, years from any date.

🗓️

Meeting Time Planner

Plan meetings across multiple time zones with city-by-city local times.