Welcome to Time and Calendar
Your central hub for all calculations related to time, dates, and timezones. Explore our powerful and easy-to-use tools designed for accuracy and simplicity.
Time & Date
World Clock
View the current time in major cities across the globe on a customizable dashboard.
Open World Clock →Timezone Converter
Instantly convert time between different cities and timezones worldwide. Perfect for scheduling international meetings and calls.
Convert Timezones →Meeting Planner
Find the perfect meeting time across multiple international timezones with our visual grid.
Plan a Meeting →Sun Moon
Get accurate sunrise, sunset, and moon phase information for any location and date.
View Sun & Moon Data →Timers & Tools
Stopwatch
An easy-to-use online stopwatch with lap functionality for accurate timing.
Start Stopwatch →Countdown
Set a countdown to any future date and time. Keep track of upcoming events, holidays, or personal deadlines with a live timer.
Start a Countdown →Calendars
Islamic Calendar
See the current Hijri calendar with corresponding Gregorian dates.
View Islamic Calendar →Chinese Calendar
See the current Lunisolar calendar with the year's zodiac animal.
View Chinese Calendar →Calculators
Date to Date Calculator
Find the duration between any two dates, calculated in years, months, and days.
Calculate Duration →Work Hours Calculator
A simple timesheet calculator to find your total work hours for the week.
Calculate Work Hours →Roman Numeral Converter
Convert any number to Roman numerals and back, instantly and accurately.
Convert Numerals →Health Calculators
Pregnancy Calculator
Estimate your due date and track key pregnancy milestones based on your LMP.
Calculate Due Date →Period & Ovulation Calculator
Predict your next period and identify your most fertile days for family planning.
Track Your Cycle →Age & Birthday Calculator
Calculate your exact age in years, months, and days, plus other fun birthday facts.
Calculate Your Age →Financial Calculators
Loan / Mortgage Calculator
Estimate your monthly payments for mortgages, car loans, or personal loans.
Calculate Payments →Savings Calculator
See how your savings can grow over time with the power of compound interest.
Calculate Growth →Retirement Calculator
Find out if your current savings plan is on track to meet your retirement income goals.
Plan for Retirement →