Date & Time
Free online date & time — fast, private, and easy to use. No sign-up required.
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Date Difference Calculator
Calculate the exact number of days, weeks, months, and years between two dates. Includes a working-days count — free, instant, and accurate.
Time Zone Converter
Convert time across global time zones with UTC offsets, daylight-saving awareness, and side-by-side city comparisons for accurate meeting planning.
World Clock
See current time in multiple cities at once with a live world clock. Track UTC offsets, daylight-saving changes, and major global time zones instantly.
Countdown Timer
Create countdown timers to any event. See days, hours, minutes, and seconds remaining. Save multiple countdowns and share them. Free online countdown timer.
Add / Subtract Days from Date
Add or subtract days, weeks, months, and years from any date. Find a future or past date instantly. Free online date arithmetic calculator.
Business Days Calculator
Count business days (working days) between two dates or add business days to a date. Excludes weekends and optional public holidays.
Hours Calculator
Calculate hours and minutes between two times. Add multiple time intervals for timesheets. Optional pay calculator. Free online time duration calculator.
Week Number Calculator
Find the ISO week number for any date. Check week-of-year values, week start/end boundaries, and a full calendar with numbered weeks.
Online Stopwatch & Timer
Use a free online stopwatch with lap times and a countdown timer with alarm. Millisecond precision, instant start, and no download required.
Day of the Week Calculator
Find out what day of the week any date falls on, in the past or future, with instant weekday lookup for birthdays, planning, and historical dates.
Moon Phase Calculator
Find the moon phase for any date, from new moon to full moon, with illumination percent. Educational astronomy tool. Free and private.
Days Until Calculator
Count the days until a future date — or since a past one. See weeks, business days and the weekday it falls on, counted from today or any start date you choose.
Duration Calculator
Calculate the exact duration between two dates and times. See the total in days, hours, minutes and seconds, plus a years-days-hours-minutes breakdown.
Time Zone Meeting Planner
Plan a meeting across time zones. Pick a date and time in your zone and see the local time for teammates worldwide, with daylight saving handled automatically.
Public Holidays by Country
Look up official public holidays for any country and year. See holiday dates, local names, and English names in a clean table. Free, no sign-up.
Sunrise & Sunset Calculator
Find sunrise and sunset times for any date and location by latitude and longitude. See the length of daylight, with polar day and night handled automatically.
Days Between Dates Calculator
Count the number of days between two dates, with an optional inclusive count and a weeks-and-days breakdown. Free, private, and instant in your browser.
Leap Year Calculator
Check whether any year is a leap year, see how many days February has, and find the previous and next leap years. Free, private, and instant in your browser.
Time Duration Calculator
Add up time durations written as 1:30, 1h 30m, 90m, or decimal hours, and get the total in hours, minutes, and decimal hours. Free and private.
Popular Date & Time tools
- Date Difference CalculatorFind the exact time between two dates — in days, weeks, months, and years. Also calculates working days.
- Time Zone ConverterConvert a date and time to any timezone in the world. Add multiple timezones side by side — perfect for scheduling across continents.
- Countdown TimerCount down to birthdays, holidays, deadlines, and events. Live timer with days/hours/minutes/seconds. Save multiple countdowns in your browser.
- World ClockTrack time across multiple cities with live updating world clocks. Add any timezone, see dates, UTC offsets, and time differences at a glance.
- Business Days CalculatorCalculate working days between dates or find a future date by adding business days. Excludes weekends and lets you add custom holidays.
- Hours CalculatorCalculate time duration between any two times. Add multiple time blocks for timesheet totals. Include an hourly rate to calculate earnings.
Often used together
- Age CalculatorEnter your date of birth to find your exact age in years, months, days, and hours. See your next birthday countdown.
- Pregnancy Due Date CalculatorEstimate your baby's due date using LMP, conception date, or IVF transfer date. See current gestational age, trimester dates, and key pregnancy milestones.
- Pomodoro TimerStay focused with the proven Pomodoro technique: 25 minutes of work followed by a short break, with a longer break every four sessions. Customizable durations and desktop notifications keep you on track.
About Date & Time
Time is the one resource you cannot make more of, so the least your tools can do is help you measure and plan it accurately. ToolsHub gathers the date and time jobs that crop up around deadlines, travel, payroll, and projects into one place, ready to use the moment a page loads. There is nothing to install and no account to create.
The headline tools answer everyday questions. The Date Difference Calculator counts the days, weeks, and months between two dates, while the Business Days Calculator skips weekends so you can quote a realistic delivery date. Add or Subtract Days from a Date pushes a deadline forward or back, the Hours Calculator totals a timesheet down to the minute, and the Week Number Calculator pins any date to its place in the year.
Coordinating people across borders is just as easy. The Time Zone Converter turns a meeting time in one city into the local time everywhere else, and the World Clock keeps several places on screen at once. When you need to count down to a launch or back from a workout, the Countdown Timer and the Online Stopwatch and Timer keep the seconds honest. The Day of the Week Calculator and the Moon Phase Calculator round things out for history buffs and night-sky watchers.
Every tool runs entirely in your browser, so the dates and times you enter stay on your device and are never sent to a server. The calculations are instant, the results are easy to copy, and nothing is locked behind a sign-up. Whether you are planning a trip, settling an invoice date, or counting down to an exam, open a tool, type in your dates, and read off the answer.