Convert between numbers and Roman numerals, and write numbers as English words. Two essential number tools in one place. Everything runs locally in your browser — nothing is uploaded.
Convert any number to its English word representation. Supports large numbers up to billions. Everything runs locally in your browser — nothing is uploaded.
Convert lists between delimiters: comma, newline, pipe, tab, semicolon, and space. Auto-detects input format and supports trim, sort, and deduplicate.
Convert length and distance between km, miles, meters, yards, feet, and inches. Simple and intuitive. Everything runs locally in your browser — nothing is uploaded.
Convert between Roman numerals and decimal numbers. Supports standard numeral rules up to 3999. Everything runs locally in your browser — nothing is uploaded.
Convert between JSON and PHP arrays, and serialize/unserialize PHP data. All four operations in one tool with instant swap.
Number & Words Tools lets you convert between numbers and Roman numerals, and write numbers as English words. Two essential number tools in one place. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert between numbers and Roman numerals, and write numbers as English words. Two essential number tools in one place. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, Number & Words Tools runs entirely on your device with no internet connection needed. All processing is done locally.
Yes, this tool is completely free with no usage limits, registration, or credit card required.
All processing happens locally in your browser. Your data is never uploaded to any server.
Yes. After the initial page load, the tool runs entirely offline without requiring an internet connection.
No. You can use this tool unlimited times with no quotas or restrictions.
Any modern web browser (Chrome, Firefox, Safari, Edge) on desktop or mobile. No installation needed.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Everything runs locally in your browser — nothing is uploaded.
Random Port Generator
Generate random TCP/UDP port numbers from well-known, registered, or dynamic ranges. Useful for network testing, Docker port mapping, and firewall configuration.
Privacy Cleaner
Scans and clears browser cookies, localStorage, sessionStorage, and cached data for the current site. No signup or account required.
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
Displays an animated spinning wheel that randomly selects one entry from a customizable list of names or options. Everything runs locally in your browser — nothing is uploaded.
QR Code Generator
Renders a scannable QR code from any text or URL using a client-side Reed-Solomon encoder. Download as PNG.