Free Online Tools
for Everyday Tasks

Every finance calculator follows the conventions Indian lenders and regulators actually use — reducing-balance EMI amortisation as prescribed by the RBI, and the CBIC GST slabs of 5%, 12%, 18% and 28%. Amounts are formatted in the Indian numbering system, so ₹5,00,000 reads the way it does on your bank statement rather than as ₹500,000. The same set also covers everyday health, maths, education and unit-conversion work.

Structural edits — merging, splitting, rotating, removing pages, signing and annotating — run entirely in your browser, so those files never leave your device at all. Format conversions that need a full rendering engine are streamed through a secure conversion service and handed straight back to you. Calcon writes nothing to disk, keeps no copy and logs no file contents either way.

Formatting, validation, encoding, hashing and minification all execute as JavaScript inside your own browser tab, with zero server round-trips. Nothing you paste — JSON payloads, API responses, CSS bundles, tokens — is transmitted anywhere, and output appears as fast as you can type. Once the page has loaded, these tools keep working even with the network switched off.

Resizing, cropping, flipping, watermarking and conversion between JPG, PNG and WebP run locally through the browser Canvas API — the file is read into memory, processed on your own machine and handed straight back, so it is never uploaded. The few heavier jobs that need real compute, such as bulk compression and image-to-text extraction, are processed on a secure server and the upload is discarded as soon as your result is returned. Either way you stay in control of quality and output dimensions before anything is written.

Word, character, sentence and paragraph counts update in real time as you type, alongside reading-time and keyword-density readouts. Case conversion, whitespace cleanup, sorting, deduplication and side-by-side diff inspection are handled in the same pass. Every keystroke stays in the browser, so drafts, notes and client copy are never sent to a server.