Measure a string precisely: total characters, characters without spaces, UTF-8 byte length, words and lines, all updating live as you type. Developers need exact lengths when a database column, an API field, an SMS message or a meta tag has a hard limit, and the difference between character count and byte count matters because emoji and non-Latin characters take more than one byte. This tool shows the JavaScript length, the true code point count, and the number of bytes the string occupies when encoded as UTF-8, so you can size fields correctly. It is a quick, reliable reference when you are validating input or debugging an off by one truncation. Everything runs in your browser, so the text you paste stays private on your own device.