One tidy bento box,
175+ tiny tools.

Calculators and converters for makers, brewers, electricians, climbers, photographers, and more. Pick a compartment, get your answer, and get on with your day - everything runs on your device, and nothing is ever uploaded.

  • - tools, zero sign-up
  • nothing's ever uploaded
  • 20 free uses a day
Open the box Go unlimited

Available tools

Frequently asked questions

Are BentoUtils tools really free?
Yes. Every tool is free to use 20 times per day. A Pro subscription removes all limits - cancel any time.
Do my files get uploaded to a server?
No. Every conversion runs entirely inside your browser using JavaScript. Your files never leave your device and are never sent to any server.
What kinds of tools does BentoUtils have?
175+ free calculators and converters spanning cooking, brewing, electronics, construction, photography, fitness, crafting, astronomy, and more - plus file tools like HEIC to PDF, GPX to CSV, and EPS to DST. New tools are added regularly.
Does BentoUtils work on iPhone and Android?
Yes. All tools run in any modern browser including Safari on iPhone and Chrome on Android - no app download needed.