Converters guide
How CalculioHub tools are built (and what that means for you)
CalculioHub is an independent project: practical planners and converters with visible formulas, private-by-default file handling where the architecture allows, and written guides that explain limitations. This page is the editorial mission behind the tools—not marketing filler.
Updated 2026-09-05
Transparent math over black boxes
Where a tool computes a number, we aim to show the relationship in plain language and keep inputs editable so you can sensitivity-test assumptions. If a jurisdiction rule is simplified, the page should say so.
Privacy-minded converters
File tools prefer in-browser processing so invoices and photos are not a product for someone else’s training set. When a format or library requires tradeoffs, we still encourage keeping originals and verifying output.
Guides + tools together
A calculator answers ‘what if.’ A guide answers ‘what should I watch for.’ We publish both: working utilities and original explanations with a named operator you can contact.
Key takeaways
- Tools are for estimates; guides explain judgment calls.
- Prefer local file processing for sensitive documents.
- Feedback via Contact helps us fix edge cases.