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Free Date & Days Calculators
Accurate calculators for age, days between dates, working days, countdowns, and retirement dates.
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Days Between Dates
The quick answer to “how many days between two dates?” — with weeks, months, weekend days, and more. Free, instant, and private.
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Age Calculator
Calculate your exact age in years, months and days.
Days Between Dates
Find the exact number of days between two dates.
Working Days Calculator
Calculate business days between two dates.
Days Until Date
Find how many days are left until a specific date.
Add Days to Date
Add days to any date and find the future date.
Subtract Days
Subtract days from any date and find the past date.
Weekend Calculator
Count weekend days between two dates.
Calendar 2026
View the full 2026 calendar with all dates.
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Days Left in 2026
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Calculated live from today’s date.
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Data source: Government of India holiday calendar
Browse all calculators
Explore every calculator by category, or use the search box at the top of the page to jump straight to one.
Academic
See all- Academic Semester Calculator Enter your semester start and end dates to see its length in weeks, how far through the term you are, and how many days and weeks are left.
- Semester Countdown Count down to the end of the semester. Enter your term start and end dates to see how many days and weeks are left, and how much of the term is done.
Add / Subtract Days
See all- Add Days to Date Add days, weeks, months, or years to any date and see the resulting date, the weekday it lands on, and how far it sits from today.
- Subtract Days from Date Subtract days, weeks, months, or years from any date to find an earlier date and the weekday it lands on.
- 30 Days From Today What date is 30 days from today? See the exact date one month ahead, with its weekday — the mark for 30-day notices, trials, and return windows.
- 45 Days From Today What date is 45 days from today? Get the date about six and a half weeks ahead, with its weekday — common for invoice terms and filing deadlines.
- 60 Days From Today What date is 60 days from today? See the date two months ahead, with the day of the week — used for notice periods, warranties, and payment terms.
- 90 Days From Today What date is 90 days from today? Find the date one quarter (three months) ahead, with its weekday — the mark for probation, returns, and planning.
Age Calculators
See all- Age Calculator Enter your date of birth to see your exact age in years, months, and days — plus your age in weeks and hours and the total days you've been alive.
- Age Calculator by Date of Birth Enter your date of birth to calculate your exact age today in years, months, and days, plus the total days you've been alive.
- Age Difference Calculator Work out the age gap between two people in years, months, and days. Enter two dates of birth to compare and see the gap in weeks and total days.
- Age Calculator for School Admission Check a child's exact age for school admission against the cut-off date. Enter the date of birth to see age in years, months, and days.
- How Old Am I? Wondering how old you are? Enter your date of birth to see your exact age today in years, months, and days, plus your total days alive.
- Exact Age Calculator Calculate your exact age to the day. Enter your date of birth for a precise age in years, months, and days, plus total days alive.
Anniversary
See all- Anniversary Calculator Enter a date to see how long ago it was in years, months, and days, plus a live countdown to the next anniversary.
- Wedding Anniversary Calculator How long have you been married? Enter your wedding date for the exact years, months and days — plus a countdown to your next anniversary.
- How Long Have We Been Married? How long have you been married? Get the exact answer — the years, months and days since your wedding — plus a countdown to your next anniversary.
- Relationship Length Calculator How long have you two been together? Enter the day you started dating for your exact time as a couple — years, months and days, updated to today.
- Dating Anniversary Calculator When's your next dating anniversary? Enter the day you got together for the date, a countdown to it, and exactly how long you've been a couple.
- Work Anniversary Calculator How long have you worked there? Get your exact years of service — years, months and days — and a countdown to your next work anniversary.
Calendar Utilities
See all- Day of the Week Calculator Find out which day of the week any date falls on, past or future. Enter a date to get the weekday, the day of the year, and its ISO week number.
- What Day of the Week Was I Born Enter your date of birth to find out which day of the week you were born on, with the full date confirmed back to you.
- Leap Year Calculator Check whether any year is a leap year and see the rule behind it (divisible by 4, except centuries not divisible by 400), plus the next leap year.
- Week Number Calculator Find the ISO 8601 week number for today or any date, with the ISO week-year, weekday, and day of the year.
- Days in Each Month How many days are in each month? See all 12 months at a glance — seven have 31 days, four have 30, and February has 28 (29 in a leap year). Check any month and year.
- Calendar 2026 The full 2026 calendar — all twelve months with every date and weekends marked. 2026 is a common year of 365 days that begins on a Thursday.
Countdowns
See all- Days Until Date Calculator Count how many days until any date you choose. The countdown recalculates from today each time you open the page, so it always stays current.
- Countdown Timer to a Date Set a countdown to any date and see the days, weeks, and hours remaining. It rolls forward from today's date every time you visit.
- Days Until Christmas 2027 How many days until Christmas 2027? A live countdown to 25 December 2027 that updates to today automatically — see the days, weeks and hours left.
- Days Until New Year 2027 How many days until New Year 2027? Live countdown to 1 January 2027, updated automatically to today's date.
- Next Birthday Countdown Count down to your next birthday. Enter your date of birth to see the days remaining, the date, and the weekday it falls on.
- Days Until Christmas How many days until Christmas? A live countdown to 25 December that updates automatically each day and rolls forward to next year after the holiday.
Days Between Dates
See all- Days Between Dates Count the exact number of days between two dates, with inclusive and exclusive counts plus a weeks-and-days breakdown.
- Date Duration Calculator Work out the duration between two dates in days and weeks, with an inclusive count that includes both endpoints.
- Weekend Calculator Count how many weekend days — Saturdays and Sundays — fall between two dates, with a full weekday and weekend breakdown.
- Universal Date Calculator One tabbed date calculator for everything: days between dates, add or subtract days, business days, age, a countdown, and the day of the week — all on one page.
Deadlines
See all- Deadline Calculator Work out a deadline date a set number of days from a start date — in calendar or business days — and see how many days are left from today.
- Business Day Deadline Calculator Find a deadline a set number of business days from a start date. Weekends are skipped, so a "10 working days" response window lands on the right date.
- Notice Period Calculator Work out when a notice period ends — 30, 60, or 90 days from the date you give notice — in calendar or business days, with the days remaining.
Financial Year
See all- Financial Year Calculator Find which financial year any date falls in (India, April–March), with the FY start and end dates, the quarter, days elapsed, and days remaining.
- Current Financial Year What financial year are we in? See the current Indian financial year (April–March), its start and end dates, the quarter, and how many days are left.
- UK Tax Year Calculator Find which UK tax year a date falls in. The personal tax year runs 6 April to 5 April — see the start and end dates, the quarter, and days remaining.
- Australian Financial Year Calculator Find which Australian financial year a date falls in. The FY runs 1 July to 30 June — see the start and end dates, the quarter, and days remaining.
- US Fiscal Year Calculator Find which US federal fiscal year a date falls in. The FY runs 1 October to 30 September and is named for the year it ends — with start/end dates and days left.
Life Milestones
See all- Life Milestones Calculator Enter your date of birth to see the exact dates of your 1,000th, 10,000th, and later day milestones, which one is next, and how many days until it.
- 10,000 Days Old Calculator Find the exact date you turn 10,000 days old — the weekday it falls on and how many days until (or since) it — plus your other big day-count milestones.
Retirement
See all- Retirement Date Calculator Find your retirement date from your date of birth and retirement age, plus a countdown of the years, months, and days until then.
- Retirement Countdown Count down to retirement. Enter your date of birth and retirement age to see the years, months, and days left, plus your retirement date.
- How Long Until I Retire? Find out how long until you retire, shown as a full countdown in years, months, and days. Enter your date of birth and planned retirement age to see the time left.
- Years Until Retirement See how many working years you have left before retirement. Enter your date of birth and retirement age for the count in years — plus the months and days on top.
- Early Retirement Calculator Planning to retire early? Enter your date of birth and target age to see your retirement date and the years, months, and days left.
- Retirement Age Calculator (India) Work out your retirement date in India from your date of birth and retirement age (commonly 60), with a countdown of the time remaining.
Working Days
See all- Working Days Calculator Count the working days in any date range, automatically excluding weekends and public holidays, with the total shown instantly.
- Working Days Calculator India Count business days between two dates in India, excluding weekends and India's national holidays — the workday total for planning around the local calendar.
- Business Days Between Dates Count the business days between two dates, skipping weekends and public holidays, with the total shown instantly.
- Add Business Days Calculator Add or subtract business days from any date, skipping weekends and public holidays, to find the exact working-day deadline.
- 5 Business Days From Today What date is 5 business days from today? See the exact working-day date, skipping weekends and public holidays, updated each day.
- 10 Business Days From Today What date is 10 business days from today? Find the exact working-day date, skipping weekends and public holidays, refreshed daily.
Frequently asked questions
Are the calculators free to use?
Yes. Every calculator on DaysCalcNow is completely free, with no sign-up and no limits.
Do you store the dates I enter?
No. All calculations run entirely in your browser — the dates you enter are never sent to or stored on our servers.
How accurate are the results?
Calculations use real calendar lengths and run in UTC, so leap years, month-ends, and time-zone boundaries are handled correctly. Every calculator is backed by unit tests.
Which calculator should I use?
Start with the Days Between Dates tool above, or browse by category below. Popular tools include the Age Calculator and the Working Days Calculator.