Holidays API alternatives

Don't let sourcing and maintaining holiday information get in the way of building your product. If it doesn't fit your project, here are the 10 best free Calendar APIs to use instead in 2026, out of 21 in the directory.

For reference, Holidays API: HTTPS.

1
UK Bank Holidays API
Online · 62 ms
Bank holidays in England and Wales, Scotland and Northern Ireland.
- No API key needed
- Fast: 62 ms response
- Returns JSON at its URL
- HTTPS
No authHTTPSCORS ?
2
caldays API
Online · 867 ms
Public holidays for 195+ countries.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
3
CountdownsHQ API
Online · 623 ms
Dates and timezone-correct countdowns for 150+ holidays and observances in 18 countries.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
4
The Calendar API
Online · 643 ms
Public holidays for US states and 30 countries plus sports and finance calendars as static JSON.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
5
India Public Holidays API
Online · 459 ms
Official Indian public holidays for the Central government and 36 states/UTs.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
6
Intellibook API
Online · 1280 ms
Appointment booking and availability API for salons and clinics.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
7N
Namedays Calendar API
Online · 616 ms
Provides namedays for multiple countries.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
8
Non-Working Days API
Online · 2770 ms
Simple REST API for checking working, non-working or short days for Russia, CIS, USA and other.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
9
Non-Working Days API
Online · 565 ms
Database of ICS files for non working days.
- No API key needed
- HTTPS
No authHTTPSCORS ?
10
Checkiday - National Holiday API
Online · 1152 ms
Industry-leading holiday data with over 5,000 holidays and thousands of descriptions.
- HTTPS
apiKeyHTTPSCORS ?

Holidays API vs alternatives

Holidays API compared with its alternatives
API	API key	HTTPS	CORS	Uptime	Response	Rating
Holidays	Required	Yes	Unknown	Up	610 ms	Not rated
UK Bank Holidays	No	Yes	Unknown	Up	62 ms	Not rated
caldays	No	Yes	Yes	Up	867 ms	Not rated
CountdownsHQ	No	Yes	Yes	Up	623 ms	Not rated
The Calendar	No	Yes	Yes	Up	643 ms	Not rated
India Public Holidays	No	Yes	Yes	Up	459 ms	Not rated
Intellibook	No	Yes	Yes	Up	1280 ms	Not rated
Namedays Calendar	No	Yes	Yes	Up	616 ms	Not rated
Non-Working Days	No	Yes	Yes	Up	2770 ms	Not rated

Holidays API alternatives FAQ

What is the best free alternative to the Holidays API in 2026?

The top-ranked free alternatives to the Holidays API are UK Bank Holidays API, caldays API and CountdownsHQ API, all in the Calendar category. Rankings combine access (API key, HTTPS, CORS), daily uptime checks and developer ratings.

Is there a Holidays API alternative that doesn't need an API key?

Yes: UK Bank Holidays API, caldays API and CountdownsHQ API work without an API key, unlike the Holidays API, which uses apiKey authentication.

Is there a Holidays API alternative I can call from the browser?

caldays API, CountdownsHQ API and The Calendar API support CORS, so front-end JavaScript can call them directly.

How many Calendar APIs are similar to the Holidays API?

The directory lists 21 other free Calendar APIs. This page compares the top ones side by side.