Xiaoyu Land Tools offers 23 free online utilities across five categories — calculators, converters, creative tools, text tools, and developer tools. Every tool is designed to be fast, private, and easy to use. No sign-ups, no tracking, no bloat — just a simple interface that works right in your browser. Whether you need to calculate a tip, convert a time zone, test a regex pattern, or generate a QR code, you'll find the tool you need here.
All tools on Xiaoyu Land are completely free with no sign-ups required. Each tool runs entirely in your browser — your data never leaves your device. We believe in privacy-first design, which means no tracking cookies, no data collection, and no third-party servers processing your information. Whether you are a developer testing regular expressions, a student calculating your BMI, or a professional converting time zones, our tools are built to be reliable, accurate, and always available.
New tools are added regularly based on user requests. If there is a tool you need that is not here, let us know through our contact page. We are committed to building the most comprehensive collection of free online utilities on the web.
Handy online utilities — quizzes, calculators, converters, and more.
Your BMI in seconds — just enter height & weight.
✨ LiveSplit bills, calculate tips, & per-person totals.
✨ LivePercent of a number, change, & difference — 3-in-1.
✨ LiveCalculate monthly payments, total interest & loan cost.
✨ LiveExact age from birth date, or precise interval between two dates.
✨ LivePick colors, copy HEX, RGB & HSL values. Explore harmonies & palettes.
✨ LiveGenerate strong, secure passwords instantly.
✨ LiveConvert data between JSON, CSV, and YAML formats.
✨ LiveSpin the wheel or draw randomly from a list.
✨ LiveGenerate free QR codes from URLs or text — download as PNG.
✨ LiveCount words, characters, sentences & more.
✨ LiveGenerate random UUID v4 identifiers with batch mode.
✨ LiveCountdown timer & stopwatch with presets, lap recording & progress bar.
✨ LiveDiscover your workplace personality archetype in 6 fun questions!
✨ LiveTest and debug regular expressions in real-time. Match highlighting, group capture & substitution.
✨ LiveEncode and decode Base64 in real-time. Supports UTF-8, auto-detection & one-click copy.
✨ LiveConvert naming conventions: camelCase, snake_case, kebab-case, PascalCase & more.
✨ LiveConvert between HTML and Markdown in real-time. Paste either format, get the other instantly.
✨ LiveCompare two texts with character-level diff. Highlights additions, deletions & changes.
✨ LiveSort lines A→Z or Z→A, deduplicate, or shuffle. Supports ignore case & blank line trimming.
✨ Live