Write any number out in English words up to billions — checks, legal documents, invoices. Render 1,250,000 for a contract line — free, local, no signup.
Content reviewed October 2026 · About Toolzum
Sort lines alphabetically (A→Z, Z→A), reverse order, shuffle randomly, or remove duplicate lines. A–Z, Z–A, reverse, shuffle, and dedupe modes cover every ordering chore — local processing, free, no signup.
Generate arithmetic, geometric, and custom number sequences with sums. Fill spreadsheets and test series — free, local, no signup.
Guess the number 1–100 with hotter/colder hints and attempt tracking. Five tries is sharp play — free, local, no signup, learn binary search by feel.
Decode QR codes from uploaded images. Scan any QR code image and extract the embedded text or URL. Point it at screenshots, photos, or documents — decoded URLs and text copy out instantly. Runs locally, free, no signup.
Diff two JSON documents with path-level change listing — spot breaking API changes instantly. Review a 500-line response diff in minutes — local processing, free, no signup.
Up to billions: 1,250,000 becomes 'one million two hundred fifty thousand'. Beyond billions, split into parts — everyday contracts never need more.
Title case with 'and' per your bank's convention ('one thousand two hundred and fifty'). Confirm the bank's exact wording rules for large checks.
Yes — paise/cents render as fractions or point-words per setting. Financial documents usually want 'point' style spelled out.
No — conversion runs locally in your browser. Nothing leaves your device.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Input never leaves your device — everything runs locally in your browser.
Speed Test
Measures your internet connection’s download speed and latency by downloading a test file from a CDN. Upload speed is not currently measured.
Wheel of Names
Spin a colorful prize wheel with your names — giveaways, classrooms, team picks. Draw winners live with drama — free, local, no signup.
QR Code Generator
Renders a scannable QR code from any text or URL with a client-side Reed-Solomon encoder at fixed high error correction. Customize size, colors, and center logo, then download the PNG — free, local, no signup.
Random Number Generator
Generates random integers within a user-defined min-max range with optional unique and sorted output. Uses the browser random number generator — fine for games, raffles, and sampling, not for security secrets. Input never leaves your device — everything runs locally in your browser.
URL Shortener
Takes any long URL and generates a compact, shareable short link. Uses cloud-based processing. Short links resolve through managed providers with automatic failover — free, paced ~10 links/min per address.