Entendy — Free Online Tools

40+ free browser-based tools for creators, students, and professionals. No account required. No paywalls. Everything runs in your browser.

YouTube Tools

• YouTube Subscribe Link Generator — Create a click-to-subscribe URL for your channel.
• YouTube Thumbnail Extractor — Download any YouTube video thumbnail in HD, SD, HQ, and MQ resolutions.
• YouTube Chapter Formatter — Format and validate timestamps for video chapters.
• Responsive iFrame Generator — Wrap any YouTube embed for mobile and desktop.
• YouTube Title A/B Tester — Preview and compare video titles for character cutoffs.

Music Tools

• BPM to MS Converter — Convert BPM to milliseconds for delays and LFOs.
• Camelot Wheel — Interactive harmonic mixing wheel for DJs and producers.
• LUFS Checker — Target LUFS levels for Spotify, Apple Music, YouTube, and Tidal.
• Online Metronome — Free metronome with tap tempo and time signatures.
• Guitar Tuner — Microphone-based pitch detection tuner.
• Music File Cleaner — Clean and format messy music filenames.
• Spotify Artist Stats — Check monthly listeners for any Spotify artist.
• Spotify Playlist Cover Downloader — Download full-resolution playlist artwork.

Medical Tools

• Medical Abbreviation Decoder — Paste a clinical note and get every abbreviation defined inline.
• SOAP Note Formatter — Generate a clean, copy-ready SOAP note from structured fields.
• Dosage Converter — Calculate medication dosages by patient weight and concentration.
• Medical Flashcard Generator — Generate printable flashcards for medical terminology.
• Normal Lab Values Reference — Quick reference for common laboratory ranges.
• Phlebotomy Order of Draw Quiz — Interactive drag-and-drop quiz for tube order.

Finance Tools

• Salary Calculator — Break down any salary into hourly, daily, weekly, and monthly pay.
• Salary to Hourly Converter — Convert an annual salary to an equivalent hourly rate.

Productivity Tools

• Work Hour Calculator — Add up work hours across shifts.
• Timezone Converter — Convert a time between any two time zones.
• Meeting Agenda Timer — Run a timed agenda with live countdown per section.

Writing Tools

• Word Counter — Count words, characters, sentences, and reading time in real time.
• Text Case Converter — Convert to UPPER, lower, Title, or Sentence case.
• Markdown to HTML — Live preview and HTML output side-by-side.

Design Tools

• Hex to RGB Converter — Convert hex colour codes to RGB values.
• Aspect Ratio Calculator — Find the missing dimension when scaling any image or video.

Developer Tools

• JSON Formatter & Validator — Validate and pretty-print JSON with error details.
• CSV to Table Viewer — Paste CSV and view it as a searchable, sortable table.
• Image Base64 Encoder — Upload an image to get its Base64 / data URI string.

Utility Tools

• Unit Converter — Convert length, weight, temperature, and volume units.
• Business Card QR Generator — Generate a scannable vCard QR code from contact details.
• Dice Roller — Physics-based digital dice roller for D&D and board games.
• Password Strength Checker — Check entropy, crack time, and password requirements instantly.

Maps & Social Tools

• Map Image Extractor — Generate and download a static map image for any address.
• Thoughts & Prayers Generator — Generate a social media post for any occasion.
• Self-Investigation Generator — Generate a satirical corporate PR statement.

About Entendy

Entendy is a collection of free, browser-based tools built for everyday use. Every tool runs entirely in your browser — nothing is sent to any server, no data is collected, and no account is ever required. The site is maintained by an independent developer and is supported by advertising.

Tools span a wide range of use cases: YouTube creators can download thumbnails and generate subscribe links; music producers can convert BPM to milliseconds and check harmonic mixing keys; medical students can decode clinical abbreviations and practice phlebotomy order of draw; developers can validate JSON and encode images to Base64; writers can count words and convert text cases; designers can convert hex to RGB and calculate aspect ratios.

JavaScript is required for the interactive tools. Please enable JavaScript in your browser to use Entendy.