Time & Date Calculators
Live countdown timers, exact age calculators, deadline trackers, and date duration tools — updating in real time, every second.
Time and date calculators for everyday scheduling, planning, and curiosity. This category includes live countdown timers for events and deadlines, exact age calculators down to the live second, date duration tools, and multi-event countdown managers. All time tools update in real time and work across all time zones.
Popular Time & Date Calculators
All Time & Date Tools
10 carefully crafted calculators and tools to help you with time & date
Add or Subtract Days Calculator
Add or subtract any number of days from a date to find the resulting day — useful for deadlines, contract notice periods, pregnancy and project dates, and '90 days from today' questions.
Age in Units Calculator
Enter your date of birth to see your exact age in years, months, and days, plus the total number of days, weeks, hours, minutes, and seconds you've been alive.
Business Days Calculator
Count the number of business days (Monday to Friday) between two dates, excluding weekends. Ideal for working deadlines, delivery estimates, and project timelines measured in working days.
Date Difference Calculator
Find the difference between any two dates in years, months, weeks, days, and hours. Handles leap years exactly — perfect for calculating durations, project timelines, and time between events.
Days Until Calculator
Live countdown to any event — Eid, Christmas, birthdays, exams, holidays, Ramadan. Add multiple events and watch the days, hours, minutes, and seconds tick in real time.
Deadline Countdown Timer
A live countdown timer for any deadline — exams, project submissions, work presentations, personal goals. Set multiple deadlines and watch the clock tick in days, hours, minutes, and seconds.
Exact Age Calculator
Your precise age in years, months, weeks, days, hours, minutes, and live seconds. Find what day of the week you were born, your next metric birthday (10,000 days, 1 billion seconds), a multi-year birthday-weekday forecast, and a downloadable age card.
Time Duration Calculator
Find the time between any two clock times — shift length, meeting duration, or elapsed time — in hours and minutes, with an optional break subtracted. Handles overnight spans.
Timesheet Calculator
Enter start time, end time, and unpaid breaks for each day and get your total working hours — in hours and minutes and as decimal hours for payroll.
Week Number Calculator
Find the ISO week number for any date, plus the day of the year, the quarter, the weekday, and how many weeks are left in the year.
Time is the only resource you cannot earn back. CalcPool's time and date tools help you measure it precisely — from your exact age down to the live second, to a real-time countdown to Eid, Christmas, an exam, or any date that matters to you. The Deadline Countdown Timer lets you manage multiple simultaneous deadlines with urgency alerts. All tools update live, work across every time zone, and require no login.
Why Use CalcPool Time Tools?
Real-time live updates
Unlike static calculators, every CalcPool time tool updates every second. Watch your exact age tick up in live seconds. See your exam deadline count down in real time.
Multiple events at once
The Days Until Calculator and Deadline Countdown Timer both support multiple simultaneous events — track Eid, a birthday, and a project deadline all on the same screen.
Works for any date
Set a countdown to any date in the past or future. Calculate the exact duration between any two dates in days, weeks, months, and years.
Frequently Asked Questions
Common questions about time & date calculators and tools
Q.How accurate is the Exact Age Calculator?
The Exact Age Calculator calculates your age using your exact birth date and the current system clock, updating every second. It accounts for leap years and calculates years, months, weeks, days, hours, minutes, and live seconds simultaneously.
Q.Can I use the Days Until Calculator for Islamic dates like Eid?
Yes. The Days Until Calculator includes pre-loaded dates for Eid al-Fitr 2026, Eid al-Adha 2026, Ramadan 2026, and other major global events. You can also add any custom date.
Q.Does the Deadline Countdown Timer save my deadlines?
Deadlines are saved in your browser's local storage so they persist across page refreshes on the same device. No account is required and no data is sent to our servers.
Explore Other Categories
Discover more useful tools for your daily life