Omnikalc started from a simple idea: a good calculation should be fast, correct and easy to understand. Too many online tools return a number without explaining where it comes from. Every Omnikalc calculator shows its result in real time, spells out the formula behind it and comes with a written guide to help you make the right decision.
Our method
- Sourced formulas: every calculation relies on recognised methods (financial mathematics, building standards, official guidance) that we cite in the guides.
- Systematic checks: formulas are tested against real cases and compared with references before publication.
- Regular updates: rates, regulatory thresholds and practices change, and so does our content.
Free, no sign-up
All calculators are free and work without an account. What you type stays in your browser. The site is funded by discreet advertising, placed so that it never gets in the way of your results.
Embed our calculators
Bloggers, real estate agents, contractors: every calculator can be embedded for free on your website with the “Embed on your site” button.
Contact us
A calculator idea, an error to report, a partnership? Email us at cedric@studio2b.io.