What powers okcalc.com?
Last seen Jun 2026 · 9 technologies across 9 categories
Advertising
Google AdSense
since Apr 2022
Analytics
Yandex.Metrika
since Feb 2021
CDN
jsDelivr
since Apr 2021
JavaScript graphics
Miscellaneous
Open Graph
since Sep 2022
Security
reCAPTCHA
since Apr 2022
Tag managers
Google Tag Manager
since Jan 2019
UI frameworks
Tailwind CSS
since Apr 2022
Web servers
Nginx
since Jan 2019
Audience
- 64% desktop
- 34% phone
- 1% tablet
Indonesia
Poland
Mexico
Belgium
Colombia
Thailand
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.21 / 10 · ranked #9,716,342 of all domains
4 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.7 s |
| INP | 75 ms |
| CLS | 0.2 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- Weight: 0.7 MB · 41 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Funding Choices May 2026