Time Tools
Time zones
Check the time anywhere and coordinate across time zones
Dates
Measure what's between any two moments in time
- Days Between DatesCalculate the time between two dates
- Age CalculatorFind out exactly how old you are
- Week Number CalculatorFind the ISO week number for any date
- Weekday CalculatorFind the day of the week for any date in history or the future
- Business Date CalculatorAdd or subtract business days, excluding weekends and holidays
- Date CalculatorAdd or subtract days, weeks, months or years from any date
- Life CountdownSee your entire life visualized in weeks — and how much time you have left
- Your Life in TimeExplore elapsed time and weeks in an age scenario you choose.
Timers
Stay focused, track laps, and build better time habits
- Countdown TimerCount down to important events and deadlines
- StopwatchProfessional stopwatch with lap timing and shortcuts
- Interval TimerHIIT, Tabata, and custom interval training with audio cues
- Pomodoro TimerFocus timer with work and break phases — start in one click
- Alarm ClockSet alarms and see the current time
- Presentation TimerFull-screen countdown for presentations, talks and conferences
Astronomy
Follow the sun and moon for any location and date
- Sunrise and SunsetSee when the sun rises and sets anywhere
- Moon PhasesTrack the phases of the moon
- Solar EventsFind eclipses and other solar events
- Golden Hour CalculatorFind the perfect light for photography — golden hour and blue hour times
- Moonrise & MoonsetFind moonrise, moonset and moon phase for any location and date
Body & Time
Understand how time shapes your body and daily rhythms
- Running Pace CalculatorCalculate pace, speed and predicted finish times for any distance
- Pregnancy Due Date CalculatorCalculate your due date and key milestones week by week
- Sleep CalculatorCalculate possible bedtimes and wake-up times with clear assumptions.
- Baby Age CalculatorFind out exactly how old your baby is in weeks, months and days
- Jet Lag CalculatorCompare time zones and see a rough planning estimate for your trip.
- Intermittent Fasting TimerTrack your fasting and eating windows in real time
- Fasting Window CalculatorPlan your eating and fasting schedule around your lifestyle
Time & Money
See how time and money grow together
- Hourly Salary CalculatorConvert between hourly rate and annual salary instantly
- Compound Interest CalculatorSee how your savings grow with compound interest over time
- Retirement CountdownFind out how many days until you can retire
- Inflation CalculatorSee what your money was worth over time with historical inflation data
- Savings Goal CalculatorFind out how long it takes to reach your savings goal
- Loan Payoff CalculatorCalculate payoff time or monthly payment for your loan
- Meeting Cost CalculatorFind out what your meetings actually cost — in real time
- Work Hours CalculatorEnter your start time and hours to find out when you clock out
- FIRE CalculatorFinancial Independence, Retire Early — how many years until you're free?
- How Long Will My Savings Last?Enter your balance, monthly withdrawals, and expected return to find out
- Investment Calculator — What If You'd Invested?See what an investment in stocks, gold or Bitcoin would be worth today