Age, date difference, countdown, timezones, work hours, retirement and more
Date & time calculators
The date and time section helps with calculations involving calendars and clocks: exact age, the difference between two dates, the day of the week for any date in history, countdowns, work-hour totals, week numbers, time-zone conversions, retirement planning and exam countdowns.
These calculators use the Gregorian calendar and the IANA time-zone database, so they correctly handle leap years, month-length differences and daylight-saving rules where applicable.
When to use these tools: Use these tools to track exam dates, plan an event, count working days for a payroll period, find the day of the week you were born, or convert a meeting time between countries.
Countdown Timer
Live countdown to any future date and time
29Days
23Hours
59Minutes
53Seconds
How Countdown Timer is calculated
Target datetime - current datetime
Live timer updates every second.
All date & time calculators on this page
Tap any calculator below to load it in place. Every tool on this page is free, runs in your browser and does not need a sign-up.
Exact age in years, months, days, weeks, hours and minutes — and the day of the week you were born.
Number of days, weeks, months and years between any two dates.
Live countdown to a future date — birthdays, exams, weddings, festivals or product launches.
Find the day of the week for any historical or future date.
Total work hours from a start and end time, with break deductions — useful for timesheets.
Convert a time from one time zone to another — for meetings with teams across India, the US, Europe or APAC.
Add or subtract days, weeks, months or years from a given date.
Find the ISO week number for any date.
Days, hours and minutes remaining to an exam date — useful for study planning.
Years left to retirement from current age and chosen retirement age, with a goal corpus check.
A note on accuracy
The numbers produced by these calculators are estimates based on the inputs you provide and the formulas shown in each tool's "How it is calculated" section. They are intended for planning, learning and quick checks — not as legal, medical, tax or investment advice. For decisions that have real financial, legal or health consequences, please consult a qualified professional. See our disclaimer for the full statement.