School Calendar Calculator to Calculate The Number of Class Days Left

School Calendar Calculator Sign

This free online school year calculator will create an interactive school calendar template based on the dates of the first and last day of class.

You can set the school day calculator to exclude US federal holidays (plus Good Friday) and related common breaks, and then adjust the weekdays to exclude from the number of school days remaining based on the "no school" dates in your school's calendar.

Then, once you have excluded all days based on your custom "no school" days, you can generate a printer-friendly school countdown calendar or count-up calendar (for homeschooling) that will list the number of days left and/or class-day-number in each calendar day cell. So instead of having to re-create the calendar to see how many days you have left until the last day of school, you can look up the current date on the printed calendar!

Finally, you can name and save the school countdown calendar under the "Data" tab. That way, when you select the saved calendar on your next visit, it will automatically update the days, weeks, and months left, and either how many days until school starts or how many days since school started, whichever applies.

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School Calendar Calculator

Calculate school days left until school ends after excluding your own custom "no school" days, and save or print your school countdown calendar and/or count-up calendar.

Learn More

Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
First day of school:

First day of school:

Select the month, day, and year of the date that classes will begin (you can select the current date if classes have already begun). Note that the starting year must be the same as, or one year prior to, the ending year. Important! Changing the dates after creating the interactive calendar will erase the calendar and any excluded days.

Last day of school:

Last day of school:

Select the month, day, and year of the date of the last day of school. Note that the ending year must be the same as, or one year after, the starting year. Important! Changing the dates after creating the interactive calendar will erase the calendar and any excluded days.

Exclude US federal holidays:

Exclude US federal holidays:

Important! Changing this option after creating the interactive calendar will erase the calendar and any excluded days.

If you select "Yes" the calculator will automatically grey-out the following US federal holidays that fall on weekdays (and Good Friday even though Easter is not a federal holiday), along with any breaks that are normally associated with each holiday. You can then adjust the holidays and breaks to match your school calendar.

US Federal Holidays
New Years Day:January 1
Birthday of Martin Luther King, Jr.:3rd Monday in January
Presidents' Day:3rd Monday in February
Memorial Day:Last Monday in May
Independence Day:July 4
Labor Day:1st Monday in September
* Columbus Day:2nd Monday in October
Veterans Day:November 11
Thanksgiving Day:4th Thursday in November
Christmas Day:December 25
* Columbus Day is also referred to as Indigenous People's Day, Discoverers' Day, and Native American Day, and may or not be a school holiday at your school.

Otherwise, if you select "No", US federal holidays will be ignored.

Create School Calendar Template

After selecting the school year dates, click the Create School Calendar Template button. This will display the interactive calendar template below this line. You can then mark no school dates as they apply.

Important! Since clicking this button after creating the interactive calendar will erase the calendar and any excluded days, the button will be disabled after clicking it. To re-enable the button, click one of the Reset buttons.

Note that if you are viewing a saved calendar and wish to create a new calendar, click the Reset button to clear out the saved calendar and prepare the calculator for a new calendar.

Printing Preferences

Choose your preferred colors for days-off background and text. Your selections will be reflected in the calendar above as you make them. You can also choose what you would like included in each calendar day cell (days left, school day number, both, or neither). Clicking the Printer Friendly Report button will open the printable calendar in a new window for printing.

Start days:Start days:Days till school starts:Number of days till school starts:

Number of days till school starts:

If the selected school start date is in the future, this is the number of days till school starts, not including today or the first day of school. Otherwise, if the selected school start date is in the past, this field will report "N/A".

Past days:Past days:School days since start:School days gone by since school started:

School days gone by since school started:

If the selected school start date is in the past, this is the estimated number of school days that have gone by since school started. Otherwise, if the selected school start date is in the future, this field will report "N/A".

Your editable school calendar will appear here after choosing the school year dates and clicking the "Create School Calendar Template" button. If the button is disabled, click one of the "Reset" buttons to re-enable it.
Days left:Days left:School days left:Number of school days remaining:

Number of school days remaining:

This is the number of school days remaining in the school year as counted by the calculator. Note that this number will update as you include and exclude dates from the calendar.

Weeks left:Weeks left:School weeks left:Number of school weeks remaining:

Number of school weeks remaining:

This is the estimated number of school weeks remaining in the school year, which is based on the number of school days divided by 5 (typical number of school days per week). Note that this number will update as you include and exclude dates from the calendar.

Months left:Months left:School months left:Number of school months remaining:

Number of school months remaining:

This is the estimated number of school months remaining in the school year, which is based on the number of school days divided by 21.67 (average number of school days per month). Note that this number will update as you include and exclude dates from the calendar.

If you would like to save the current entries to the secure online database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Help and Tools

Learn

The number of months, weeks, days, and hours in a typical school year.

How Many Days Are In a School Year?

While the number varies between states and school districts, the average number of school days in a year in the US is 180 days. At 6 hours per school day, this translates to an average of 1,080 instructional hours per school year.

If would like a more accurate measure of the number of school days in a year, you can look up your state on National Center for Educational Statistics (NCES) table, entitled Number of instructional days and hours in the school year, by state.

How Many Weeks Are In a School Year?

Based on the 180 average number of school days per school year, and roughly 20 no-school days (200 total weekdays), there are roughly 40 weeks per school year (200 weekdays ÷ 5 days per week = 40 weeks).

How Many Months Are In a School Year?

Based on 40-weeks per school year in the US, and each month containing an average of 4.35 weeks, the average number of months in a school year would be 9.2 (40 weeks ÷ 4.35 weeks per month = 9.2 months).

Adjust Calculator Width:

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".

Show/Hide Popup Keypads:

Select Show or Hide to show or hide the popup keypad icons located next to numeric entry fields. These are generally only needed for mobile devices that don't have decimal points in their numeric keypads. So if you are on a desktop, you may find the calculator to be more user-friendly and less cluttered without them.

Stick/Unstick Tools:

Select Stick or Unstick to stick or unstick the help and tools panel. Selecting "Stick" will keep the panel in view while scrolling the calculator vertically. If you find that annoying, select "Unstick" to keep the panel in a stationary position.

If the tools panel becomes "Unstuck" on its own, try clicking "Unstick" and then "Stick" to re-stick the panel.