Everyday
Units, percentages and conversions that come up constantly.
- Percentage CalculatorSolve every common percentage question — percent of, percent change, and what percent X is of Y.
- Unit ConverterConvert length, weight, temperature, volume, area and speed between metric and imperial units.
- QR Code GeneratorCreate static QR codes for links, text, WiFi and contacts. Free forever, works offline, no tracking or expiry.
- Date CalculatorCount days between two dates, add or subtract time, and work out exact age in years, months and days.
Other categories
- Image toolsConvert, resize and compress images without uploading them anywhere.
- File & dataMerge PDFs, reshape data files and encode text — all processed locally.
- Text toolsCount, clean and transform text for writing, editing and publishing.
- Developer toolsHashes, identifiers and encoding — the small utilities you reach for daily.
- FinanceLoan payments, interest and percentages, with the full schedule shown.
- ConstructionStairs, concrete and roofing, checked against building code limits.