Get Calculators Pro – $39 one-time Try a calculator free
What a Pro report contains
| Section | Content |
|---|---|
| Header | Calculator name, unique report number, UTC date and time, project/part field |
| 1. Inputs | Every input you entered, with units, and which defaults were used |
| 2. Results | All results, checks and warnings exactly as shown on screen, including tables and diagrams where the calculator has them |
| 3. Method and equations | The equations and the standard or method they come from, plus the published-value checks |
| 4. Review | Prepared by / checked by / date block for your design-review process |
Works on every calculator
Limits and fits (ISO 286), interference fit, tolerance stack-up, bolt torque, thread engagement, fillet weld, key and keyway, bearing life, shaft critical speed, shaft stress, beam deflection, compression spring, spur gear, section properties, pressure vessel wall thickness, thermal expansion and the unit converter. See the full list.
Why pay when the calculation is free?
The calculation stays free for everyone. Pro is for the moment you need to put the result in a design file, a customer submittal or a review: a document with the inputs, the method and a reference number, not a screenshot.
No cookies, no sign-up, no data leaves your browser. For business use. Prices in US dollars; any sales tax that applies is your responsibility unless charged at checkout (terms).
Get Calculators Pro – $39 one-time
Questions
What exactly do I get?
A "Pro report" button on every Proxom calculator. It opens a print-ready report with your inputs, the results, the equations and method, a unique report number, the date and a prepared/checked sign-off block. You save it as PDF with your browser's print dialog.
Is it a subscription?
No. One payment of $39, no renewal. It covers all the calculators that are online today.
How is Pro unlocked?
After payment you land on a private unlock page that switches Pro on in that browser. Bookmark the page to unlock another computer you use. Please keep it within your company.
Do you store my calculations?
No. Everything runs in your browser and nothing is uploaded; we hold no copy of your reports. The report number is generated locally as a reference for your own records.
Does the free calculator still work?
Yes. The calculation, printing and copy-result stay free. Pro adds the documented report.
What if it does not work in my browser?
Email kits@proxom.co.uk within 30 days and we will fix it or refund you (see the Terms). Pro needs a current desktop browser that allows pop-ups from this site.
Is the report a certification?
No. It is a calculation record for your design file. Verify critical designs independently; you remain responsible for the design.
Engineering aid; verify critical designs. Standards are cited for the method only; this site is not affiliated with their publishers.