If you want to add holidays to your calendar once and have them appear on every device you own, an .ics file is the tool for the job. Instead of typing each date by hand, you download one small file, import it, and every holiday drops into your calendar at the right spot. This guide explains exactly what an .ics file is and walks through importing one into Google Calendar, Apple Calendar, and Microsoft Outlook, step by step.

You can grab a ready-made holiday file from the free 2026 calendar using the "Add to calendar (.ics)" button, then follow the instructions below for whichever app you use.

What Is an .ics File?

An .ics file is a plain-text file in the iCalendar format, an open standard that nearly every calendar app understands. Inside, each event is written in a simple structure that lists a title, a start date, an end date, and optional details like a description or whether it repeats. Because the format is universal, the same file works across Google, Apple, Microsoft, and dozens of other calendar programs without any conversion.

There are two ways an .ics file is typically used, and the difference matters:

  • Import (a one-time copy): The events are copied into your calendar as of that moment. If the source file later changes, your calendar does not update. This is what you want for a fixed set of holidays for a given year.
  • Subscribe (a live link): Your calendar checks a web URL periodically and stays in sync with it. This suits feeds that change over time.

For adding a year's holidays, importing is simple and reliable, and that is what this guide focuses on.

How to Add Holidays to Google Calendar

Google Calendar's import feature lives in the settings on a computer. The mobile app cannot import .ics files directly, so use a desktop browser for this step; the holidays will then sync to your phone automatically.

  1. Download the .ics file using the "Add to calendar (.ics)" button on the 2026 calendar page.
  2. Open Google Calendar in a web browser and sign in.
  3. Click the gear icon in the top right, then choose Settings.
  4. In the left sidebar, click Import & export.
  5. Under Import, click Select file from your computer and choose the .ics file you downloaded.
  6. Pick which calendar to add the events to from the dropdown (you can create a separate "Holidays" calendar first if you want to keep them tidy).
  7. Click Import. Google confirms how many events were added.

The holidays now appear in Google Calendar and sync to every device signed in to your account. If you ever want to remove them, deleting the calendar you imported them into removes them all at once, which is why a dedicated Holidays calendar is handy.

How to Add Holidays to Apple Calendar

Apple Calendar makes importing especially quick because double-clicking an .ics file usually does most of the work.

On a Mac

  1. Download the .ics file from the 2026 calendar.
  2. Double-click the downloaded file. Calendar opens and asks where to add the events.
  3. Choose an existing calendar or select New Calendar to keep the holidays separate.
  4. Click OK. The holidays appear immediately.

If double-clicking does not work, open the Calendar app, then choose File > Import from the menu bar and select the .ics file manually.

On an iPhone or iPad

  1. Download the .ics file, for example by tapping the button in Safari or opening it from an email or Files.
  2. Tap the file. iOS shows a preview of the events.
  3. Tap Add All, then choose which calendar to add them to.
  4. Tap Done.

Because Apple Calendar syncs through iCloud, holidays imported on one Apple device appear on the others signed in to the same Apple ID.

How to Add Holidays to Outlook Calendar

Outlook comes in a few flavors, so the steps differ slightly. All of them accept the same .ics file.

Outlook on the Web (Outlook.com or Microsoft 365)

  1. Download the .ics file from the 2026 calendar.
  2. Open Outlook in your browser and go to the Calendar view.
  3. Click Add calendar in the toolbar or left panel.
  4. Choose Upload from file.
  5. Click Browse, select the .ics file, pick which calendar to add it to, and click Import.

Outlook Desktop (Windows)

  1. Download the .ics file.
  2. Open the classic Outlook desktop app and go to File > Open & Export > Import/Export.
  3. Choose Import an iCalendar (.ics) or vCalendar file, then click Next and select your file.
  4. When prompted, choose Import to merge the holidays into your existing calendar (rather than "Open as New").

Once imported, the holidays sync to your Outlook mobile app and any device connected to the same account.

Troubleshooting Common Import Problems

Imports usually go smoothly, but a few issues come up often enough to note.

  • The mobile app has no import button. Google Calendar in particular only imports on desktop. Import on a computer and let the holidays sync to your phone.
  • Events landed in the wrong calendar. Many apps let you pick the destination during import. If you missed it, delete and re-import, choosing the right calendar this time.
  • Duplicate holidays appear. You may have imported the same file twice, or your app already has a built-in holidays calendar turned on. Remove the duplicate set by deleting the calendar you imported into.
  • The file will not open. Confirm the download finished and the file ends in .ics. Re-download it from the 2026 calendar if it looks incomplete.
  • All-day events show a time. This is usually a time-zone quirk; the holiday is still on the correct day. Holiday .ics files use all-day events, so no specific time should appear.

Why an .ics File Beats Typing Dates by Hand

It is tempting to just add a few holidays manually, but an .ics import wins on both speed and accuracy. Entering eleven or more holidays by hand across a busy calendar is not only tedious, it invites mistakes, and floating holidays like Thanksgiving or Memorial Day are exactly the ones people get wrong because their dates shift each year. An .ics file has the correct dates baked in, so you avoid scheduling a day off on the wrong Monday. You also get consistency across devices: import once on a computer, and the same accurate set appears on your phone, tablet, and work machine without you retyping anything. For a recurring task you repeat every year, that one-file workflow quickly pays for the minute it takes to learn.

Keeping Holidays Separate From Personal Events

One habit makes managing imported holidays far easier: put them in their own calendar rather than mixing them into your main one. Most apps let you create a new calendar named something like "US Holidays" and choose it as the import destination. The payoff is control. You can hide the holidays with a single toggle when you want a cleaner view, give them a distinct color so they stand out, and remove the entire set at once by deleting that calendar if you no longer need it. Blending holidays into your personal calendar, by contrast, makes them tedious to find and delete later, so spend the extra few seconds to keep them in their own lane.

Import vs Printing: Use Both

A digital calendar full of holidays is great for reminders and planning on the go, but many people still like a printed copy on the wall or desk. The two work well together: import the .ics for pop-up reminders and sync across devices, and print the 2026 calendar for an at-a-glance view you can write on. You get the best of both, one file and one sheet, covering the whole year.

That is everything you need to add holidays to any major calendar app. Download the .ics from the 2026 calendar, follow the steps for your app, and the year's holidays will be in place in under a minute.