About RivoCalc
What it is
RivoCalc is a free calculator aggregator, built with the UK in mind. We created these tools because the existing alternatives are often generic, US-centric, or missing local context — the wrong currency, the wrong units, examples that don't reflect how things actually work here.
How it works
Every calculator is free and needs no sign-up. Enter your numbers, get your result. No intrusive ads, no personal data collected, no dark patterns.
How we check our formulas
Every RivoCalc calculator is built on a formula derived from verifiable sources: British and European standards (BS, EN), documentation from official bodies — the Financial Conduct Authority and industry regulators on financial and building topics — and manufacturer guidance. The sources used for each calculation are listed on the calculator's own page, next to the formula, and every page shows the date it was last updated. When a standard is revised or an error is reported, the formula is corrected and the date updated.
Read our full methodology →We started with Construction
Our first category covers construction and renovation calculators — paint, cement, tiling, project costs. New categories are in the works: finance, health, conversions and everyday life.
Contact
Got a suggestion, found an error, or want to propose a calculator? Get in touch via info@rivocalc.com