About 1vw
1vw is a small set of developer utilities. We picked the tools we reach for most often (finance, health, dev, design, text) — and made each one fast, accurate, and free of friction.
Why "1vw"?
1vw is the CSS unit for "1% of viewport width." A small unit for small tools. The name is an inside joke that takes one second to get if you've ever written CSS.
How These Tools Work
Every tool here runs entirely in your browser. There's no backend, no API, no log. Your JSON, your password, your JWT — none of it ever leaves your device. We literally cannot see what you put in.
How We Stay Free
Display advertising. We aim to keep ads unobtrusive — no popups, no autoplay video, no "subscribe to use this feature" gates. If an ad ever gets in the way of a tool, email hello@1vw.net and we'll fix it.
Other Projects
Contact
Email hello@1vw.net with bug reports, feature requests, or new tool ideas.