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Simple Date Calculator

Count the days between two dates, or add and subtract days, weeks, months and years from a date. Simple Date Calculator shows the answer on a rolling number counter, with weeks, months, hours, minutes and seconds underneath.

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$1.99 · pay oncePay once. No subscription.
5.0 from 2 ratings
Count the days between two dates.
Count down the days until a birthday, a trip or any date.
The counter rolls to the answer, with years, months and days underneath.
Add or subtract days, weeks, months or years.
Months end where they should.
Your age in days, in light or dark.
Down to the second.

Count the days between two dates.

EvlarSoft, LLCA registered US software company, based in Missouri
Pay onceNo subscription, and updates are included
190,000+ downloadsOf EvlarSoft apps, all built and supported by one team
Real supportQuestions answered by the team. Contact support
Windows 10 and 11Small, native apps that start fast

See it in action

Count down the days until a birthday, a trip or any date.
Count down the days until a birthday, a trip or any date.
The counter rolls to the answer, with years, months and days underneath.
The counter rolls to the answer, with years, months and days underneath.
Add or subtract days, weeks, months or years.
Add or subtract days, weeks, months or years.
Months end where they should.
Months end where they should.
Your age in days, in light or dark.
Your age in days, in light or dark.
Down to the second.
Down to the second.

About Simple Date Calculator

How many days until Christmas? What date is 90 days from today? Simple Date Calculator answers both.

Between dates

Pick a start date and an end date, and the counter rolls to the number of days between them. A second dial shows the same span in years, months and days. Underneath are the weeks, months, days, hours, minutes and seconds. Tick Include end date as additional date when the last day should count too.

Add or subtract

Switch to Add or subtract, pick a date, and add or subtract any number of days, weeks, months or years. The result date appears with its weekday. Months end where they should, so January 31 plus one month is February 28.

Days until

Pick a date, give it a name, and the counter counts down the days from today. Tick Repeat every year for a birthday or an anniversary, and it always counts to the next one. The countdown moves on by itself at midnight.

Quick to use

There is no Calculate button. Change a date or a number and the answer updates at once. Click the counter to copy the result, or scroll over it to change it by one. Today buttons set a date to today. Your dates and numbers are remembered for next time.

Light and dark themes, or match Windows.

Features

  • Count the days between two dates on a rolling number counter
  • Years, months and days on a second dial under the count
  • Weeks, months, days, hours, minutes and seconds between the dates
  • Include end date as additional date when the last day should count
  • Add or subtract days, weeks, months or years from any date
  • See the result date with its weekday
  • Months end where they should: January 31 plus one month is February 28
  • Days until: count down from today to any date, and name it
  • Repeat a date every year for birthdays and anniversaries
  • Today buttons set a date to today with one click
  • Click the counter to copy the result
  • Scroll over the counter to change it by one
  • Everything updates the moment you change a date or a number
  • Your dates and numbers are remembered for next time
  • Turn the rolling animation off in Settings
  • Light and dark themes, or match Windows

Details

Works on
Windows 10 (1809 or later) and Windows 11
Download
About 2.6 MB
Version
2.0.2, updated October 2026
First released
August 2022
Price
$1.99 once. No subscription.
Category
Productivity

What's new in 2.0.2

  • New: add or subtract days, weeks, months or years from a date
  • New: count down the days until any date, or until the next birthday
  • New: the answer rolls into place on a number counter
  • New: click the counter to copy the result
  • Every number updates as soon as you change a date
  • Your dates are remembered for next time
  • Light and dark themes

Questions

Anything else? Ask us

Which versions of Windows does it run on?

Windows 10 (version 1809 or later) and Windows 11.

Is it a subscription?

No. Simple Date Calculator is a one-time purchase of $1.99, and updates are included.

How do I get it?

EvlarSoft apps are moving to direct downloads from this site. Ask to be notified and we will email you as soon as Simple Date Calculator is ready to download.

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