Support the Project
Engineering Calculator Hub is free to use, with no sign-up and no paywalled calculators — every tool on this site, from the SAMA logic simulator to the turbine and boiler protection registry, stays free for every engineer, student, and plant operator who needs it.
Keeping it that way, and continuing to add and verify new calculators against real published standards, takes ongoing time and hosting cost. If this site has saved you time on the job or in your studies, a donation helps cover that and keeps development going.
Revenue from this project, including any donation you make here, goes toward building a library in Bihar for children from very poor backgrounds — the same mission stated in the site footer. Every contribution, however small, genuinely matters toward that.
Other Ways to Help
Money isn’t the only way to support a free project like this one — each of these genuinely helps, at no cost to you:
- Leave a rating on the Reviews & Ratings page — it helps other engineers decide whether a calculator is trustworthy before they use it.
- Tell a colleague, classmate, or your team about the site — word of mouth is how most people find it.
- Report a bug or suggest a calculator you wish existed — write to admin@engineeringhubcalc.com; a real, specific request from someone who’d actually use it is exactly what shapes what gets built next.