Every Cleanor Tool

Convert an MP4 to WebM locally for the web, with no upload and no account.

Pull the audio out of an MPEG file as an MP3.

Convert an MPEG program stream into a modern MP4.

Remove the audio track from a video and export one silent MP4 locally.

Draw never-have-i-ever prompts by category, family-friendly, no repeats.

Short, punchy nicknames built from three different patterns.

Add sequential numbers to each item in a list. Free, in your browser, no upload.

Convert a number into Roman numerals. Free, in your browser, nothing is uploaded.

Spell out a number in English words. Free, in your browser, nothing is uploaded.

Convert Octal to Binary instantly in your browser. Free, no upload, no sign-up.

Convert Octal to Decimal instantly in your browser. Free, no upload, no sign-up.

Convert Octal to Hex instantly in your browser. Free, no upload, no sign-up.

Convert Octal to Text instantly in your browser. Free, no upload, no sign-up.

Convert one OGG file into MP3 locally when an app or device will not play OGG.

A live digital and analog clock for your screen, with 12/24-hour and seconds toggles. Free, in your browser, nothing is uploaded.

Keep steady time with an accurate metronome: adjustable BPM, time signatures, and an accented downbeat with a visual beat indicator. Free, in your browser, nothing is uploaded.

A distraction-free notepad that autosaves as you type, with live word and character counts and a clear button. Free, in your browser, nothing is uploaded.

A simple to-do list that saves in your browser: add tasks, check them off, delete, and clear completed, surviving reloads. Free, in your browser, nothing is uploaded.

Generate Open Graph and Twitter card meta tags so links show a rich title, description, and image when shared. Free, in your browser, nothing is uploaded.

Preview how your link looks on Facebook, X, LinkedIn, and Slack. Free, in your browser, nothing is uploaded.

Estimate your fertile window, ovulation day, and next period from your last period and cycle length. Free, in your browser, nothing is uploaded.

Convert running pace and speed between min/km, min/mile, km/h, mph and m/s. Free, in your browser, nothing is uploaded.

Check whether a word or phrase reads the same forwards and backwards. Free, in your browser, no upload.

Convert concentration between percent, per mille, ppm, ppb, ppt, mg/kg and mg/L. Free, in your browser, nothing is uploaded.