What powers hpcalc.org?
Last seen Jun 2026 · 3 technologies across 3 categories
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| ptable | #60 | 130 |
| fibonacci triangle | #74 | 57 |
| hp calculators | #13 | 39 |
| hewlett packard calculators | #14 | 37 |
| hp games | #7 | 33 |
| hp connectivity kit | #1 | 33 |
| hp prime apps | #1 | 27 |
| hp prime connectivity kit | #1 | 25 |
| free42s | #3 | 25 |
| hp prime programs | #1 | 21 |
| free 42 | #4 | 17 |
| hp49 | #3 | 14 |
| hp-49 | #3 | 14 |
| hp solver | #1 | 12 |
| free42 | #5 | 12 |
| 49/50 | #76 | 11 |
| hp39 | #2 | 11 |
| hp 49 calculator | #2 | 11 |
| hp prime calculator firmware update | #1 | 9 |
| hp 48 series | #9 | 9 |
| hewlett-packard 48g manual | #2 | 8 |
| hewlett packard 48g manual | #2 | 8 |
| hp 48g manual | #2 | 8 |
| hp 48g calculator manual | #2 | 8 |
| hpcalcs | #2 | 8 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 62% desktop
- 36% phone
- 2% tablet
Peru
Brazil
Italy
Indonesia
Spain
Australia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
5.27 / 10 · ranked #220,344 of all domains
143 referring domains · OpenPageRank
Search traffic
760 est. monthly organic visits (US)
561 keywords in Google's top 30
Core Web Vitals
| LCP | 1.1 s |
| INP | 175 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 0.1 MB · 17 requests
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.hpcalc.org | 3 |
| archived.hpcalc.org | 2 |
| commerce.hpcalc.org | 2 |
| literature.hpcalc.org | 2 |