About Mobilia Tools

Mobilia Tools is the web home of Mobilia Apps, an independent Android developer publishing practical calculators, converters and record-keeping apps used by people in more than 150 countries — from land-area and fuel calculators to health diaries and small-business ledgers.

Each tool on this site is a free web version of one of our Android apps, built on the same calculation engine so the answers always match. The pages are deliberately simple: plain HTML, no sign-up, no cookies set by us, and every calculation runs in your own browser.

Why we build these

Most everyday calculations — how many drywall sheets a room needs, what a marla is in square feet, whether an IBAN is typed correctly — deserve an instant answer, not a spreadsheet or a sign-up wall. We build small, focused tools that do one job well, and offer the Android app for anyone who wants the same tool offline with extra features like saved history and exports.

Accuracy

Every calculator's logic is covered by automated tests and mirrors the engine inside the corresponding Android app. If you ever get a result that looks wrong, please tell us — we treat calculation bugs as the most serious kind.

Browse all tools or see our Android apps on Google Play.