Free online tools for everyday tasks

A collection of free online tools — calculators, converters, and checkers that run entirely in your browser. No sign-up required.

All tools

• ID / Passport Photo Maker

  Turn a phone photo into a passport, visa, or ID photo for many countries. All processing happens in your browser — your photo is never uploaded.

• STL 3D Print Cost Calculator

  Compute exact volume from an STL file and estimate material cost, weight, filament length, and print time. Your file never leaves the browser.