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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.
Fast & AccurateInstant calculations with precise results.
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Days Left in 2026
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Calculated live from today’s date.
Upcoming Popular Events
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- Days From Today Calculator Enter any number of days and see the date that many days from today, or that many days ago, with the weekday. Quick links for 30, 60, 90, 100 and 180 days.
- 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.
- 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.
- 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.
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.
- 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.
- Chronological Age Calculator Calculate chronological age from date of birth and test date in years, months and days, with Y;M;D notation and a 15-day rounding note for assessments.
- 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.
- Birthday Calculator Enter your date of birth for your exact age and a countdown to your next birthday, including the weekday it falls on.
Anniversary
See all- Anniversary Calculator Enter a date to see how long ago it was in years, months, and days, plus a countdown to the next anniversary — or pick a dedicated tool for weddings, work, or another milestone below.
- Work Anniversary Calculator Calculate your years of service — exact years, months and days from your start date — plus a countdown to your next 1st, 5th, 10th or 25th work anniversary.
- Wedding Anniversary Calculator Find your wedding anniversary number and traditional gift (paper, silver, gold...), the exact years married, and a countdown to your next one.
- Anniversary Countdown Start a live anniversary countdown from any date. Watch the days, hours, minutes and seconds tick down to your next anniversary in real time.
- 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.
Calendar Utilities
See all- 2027 Calendar 2027 calendar with US, UK and India holidays, ISO week numbers and key dates like Easter and daylight saving. Print the full year on one page.
- 2026 Calendar 2026 calendar with US, UK and India holidays, ISO week numbers and key dates like Easter and daylight saving. Print the full year on one page.
- US Federal Holidays 2026 All US federal holidays in 2026 with dates and weekdays, the observed day when a holiday falls on a weekend, and the next federal holiday.
- 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.
- 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.
Countdowns
See all- 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 Until Halloween How many days until Halloween? A live countdown to 31 October, updated automatically each day and rolling forward to next year after the day.
- Days Until Thanksgiving How many days until Thanksgiving? A live countdown to the fourth Thursday of November, updated automatically each day and rolling forward to the next year.
- Days Until New Year How many days until New Year? A live countdown to 1 January, updated automatically each day and rolling forward to the next year once it passes.
- 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.
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.
- 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 N days from a start date — calendar, business, or legal counting (start day excluded, weekend end rolls to Monday) — and see the days left.
- Notice Period Calculator Work out when a notice period ends — 30, 60 or 90 days, or 1 to 3 months — from the date you give notice, in calendar or business days, with the days remaining.
- 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.
Financial Year
See all- Financial Year Calculator Find which financial year any date falls in — India (April–March) by default, or pick UK, Australia, US or a custom start — with FY dates, quarter, and days left.
- 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 Dates UK tax year dates from 2024/25 to 2028/29, key HMRC deadlines, and a tool to find which tax year any date falls in — the personal tax year runs 6 April to 5 April.
- 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.
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 Age Calculator (India) Work out your retirement date in India from your date of birth — the real last-day-of-the-month rule (FR 56) for central government service, with a countdown.
- 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.
- Pension Age Calculator Find your pension age by country (India, UK, US, Australia, Canada) or enter your own, and get the exact date you reach it with a countdown.
- Retirement Age Calculator (USA) Find your Social Security full retirement age automatically from your date of birth — the real 1983-Act schedule (66 to 67), with your exact retirement date and a countdown.
Working Days
See all- Working Days Calculator Count the working (business) days between two dates, automatically excluding weekends and public holidays, with the total shown instantly.
- Business Days From Today Calculator What date is N business days from today? Enter any number to add or subtract, skipping weekends and public holidays, for the exact working-day date.
- 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.
- 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.
- Bank Working Days Calculator (India) Count bank and government working days between two dates in India, applying the RBI's 2nd/4th-Saturday rule plus national and gazetted public holidays.
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.