📚 The Blog
Guides, tips and how-tos for getting the most out of free online tools.
Km to miles, kg to pounds, litres to gallons, Mbps to MB/s — the conversions everyone needs, with quick approximations and exact free converters.
What BMI, BMR, ideal weight and daily water intake actually measure, what they miss, and free calculators for each.
Fix CAPS LOCK paragraphs, make Title Case headlines, or convert to sentence case in one click — without retyping a single word.
The three percentage formulas everyone mixes up, reverse percentage for discounts, and mental math tricks — with a free calculator.
The three money formulas every Indian household should understand — EMI, SIP and compound interest — explained with worked examples and free calculators.
What actually makes a password strong, why length beats complexity, and how to generate and manage passwords you never have to memorise.
Unexpected token? Trailing comma? Single quotes? The seven JSON mistakes behind 90% of parse errors, with fixes and a free validator.
JSON formatting, Base64, JWT decoding, hash generation, regex testing and more — the everyday developer utilities, all in one place and all running locally.
How computers turn 1s and 0s into letters, how to convert binary to text and back, and free translators for binary, hex and Morse.
Combine multiple PDFs into one document without uploading them to anyone's server — the private way to merge applications, invoices and scans.
Most online PDF tools upload your files to their servers. These run entirely in your browser — safer for contracts, ID proofs and bank statements.
Convert any currency at live rates, understand why the rate you get differs from Google, and avoid the hidden fees that quietly eat your money.