UD5 Toolkit
Coin Flipper - Online Heads or Tails Simulator
Flip a virtual coin to make a decision or settle a dispute. Realistic animation and fair random outcome. Simple, fast, and always available.
Weight Converter - Online Mass & Weight Unit Calculator
Weight Converter
Convert mass and weight between metric, imperial, and other units instantly.
1 Kilogram = 2.20462 Pounds
Frequently Asked Questions
One kilogram equals approximately 2.20462 pounds. For quick mental math, you can multiply kilograms by 2.2 to get a close estimate.
A stone (st) is an imperial unit primarily used in the UK and Ireland for body weight. 1 stone = 14 pounds or approximately 6.35 kilograms.
To convert grams to ounces, divide the number of grams by 28.3495. For example, 100 grams is about 3.53 ounces.
A short ton (US) equals 2,000 pounds (≈907.18 kg). A long ton (UK) equals 2,240 pounds (≈1,016.05 kg). A metric ton (tonne) is exactly 1,000 kilograms (≈2,204.62 lbs).
One gram equals exactly 5 carats. Carats are commonly used for gemstones and pearls, where precision is critical.
Absolutely. The tool includes grams, ounces, grains, and troy‑related units are not directly listed, but you can approximate using the available mass units. For exact troy ounces, note that 1 troy ounce ≈ 31.1035 grams.
Shakespearean Insult Generator – Online Thou Art a...
Generate a hilarious, historically accurate insult by combining words from Shakespeare's works. Thee shall laugh.
Webhook Tester & Inspector - Online View Incoming Payloads
Generate a temporary webhook URL (mock) and view the JSON payloads sent to it. Great for testing integrations locally.
cURL to HTTP Request Object - Online Convert to JS/Python
Paste a cURL command and convert it to a fetch() call in JavaScript, Python requests, or Go net/http. Save time.
Meta Tag Extractor - Online View Any Page's SEO Tags
Fetch and extract all meta tags, open graph tags, and Twitter cards from a live URL. No server proxy, direct browser fetch.
Posture Corrective Exercise Randomizer – Online Kyphosis/Lordosis
Select your problem area (forward head, rounded shoulders, anterior pelvic tilt) and get a few random exercises to do.
Meta Tag Extractor - Online View Any Page's SEO Tags
Enter a URL and extract meta title, description, OG tags into a readable format. Works via frontend proxy or user pastes HTML. Local.
Canonical Tag Checker - Online Rel=Canonical Inspector
Check a live URL to extract and validate its canonical link element. Ensure correct SEO configuration. Runs from your browser.
Element Hangman - Online Guess the Chemical Symbol
Play Hangman where the words are element names. Learn the periodic table while having fun. High score localStorage.
Random Insult Generator - Online Shakespearean & Modern Burns
Get a random clever or Shakespearean insult. Perfect for friendly banter. No profanity, just wit. All random.
URLPattern API Tester - Online Route Matcher & Playground
Write a pattern and test it against URLs instantly. See which groups match. Learn the modern alternative to regex for routing. Works entirely in the browser.
JSON Pointer Evaluator - Online Navigate & Get Value
Enter a JSON pointer expression (/foo/bar) to extract a value from your pasted JSON. Debug nested objects quickly.
Famous Book Quote Finder – Online Search by Keyword
Enter a keyword or author to find classic quotes from public domain works. Inspiration tool.
Multi‑Stopwatch Page - Online Track Many Tasks
Run up to 4 independent stopwatches at once with labels. Perfect for timing multiple tasks or sprints.
Product Hunt Tagline Generator - Online AI‑free Hype
Get a catchy, Product Hunt‑style tagline for your side project. Like 'Uber for left shoes'. Instant creativity.
JavaScript Object Diff Viewer - Online Compare Data
Paste two JSON objects and see a highlighted diff showing what was added, removed, or changed. For API testing.
URL Canonicalizer - Online Normalize & Compare
Enter two URLs and see if they resolve to the same canonical form after normalization. Find duplicate content issues.
Paraphrase Comparison Tool - Online Spot the Rewrite
Paste two versions of the same idea and see a word‑level diff highlighting the rewrite. Not AI, just diff.
Classroom Seating Randomizer – Online New Assignments Each Day
Enter student names and desks layout, then scramble periodically. Print new seating chart.
Swatch Match Finder - Online Find Images Matching a Palette
Pick a color palette and the tool shows sample images that match it. Great for moodboard and brand inspiration. Static dataset.
Pointer Events Playground - Online Mouse, Touch & Pen
Unified input demo: see pressure, tilt, and type from any pointer. Compare pointerType values. Essential for drawing apps.
Human Skeleton Anatomy Viewer - Online Interactive Bones
Click on any bone in the human skeleton to see its name and learn about it. Rotatable 3D‑like view. Study aid.
Eye Dominance Test - Online Find Your Dominant Eye
Simple interactive eye dominance test: hold up a virtual dot and see which eye stays aligned. Educational.
Multi‑Touch Event Playground - Online Visualize Touches
See every touch point with coordinates, radius, and force on your mobile device. Debug gestures with live overlay.
PDF Metadata Viewer - Online Read Author, Title & Keywords
Drop a PDF and see its embedded metadata: author, title, creation date, and more. No content is uploaded; pure browser PDF parsing.
Random Travel Phrase Generator - Online Language Phrases
Pick a language and get a random useful travel phrase with pronunciation. For fun language learning. Static data.
ULID Generator - Online Universally Unique Lexicographically Sortable
Create ULIDs that are time‑based, URL‑safe, and sortable. Alternative to UUID for modern applications. Copy or download a list.
Random English Idiom Generator - Online Learn Phrases
Get a common English idiom with its meaning and example. Perfect for ESL learners. Local collection.
GLSL Fragment Shader Playground - Online WebGL Art
Write a fragment shader and see the result rendered on a full‑screen quad. For WebGL learners. Local compilation.
Event Schema Markup Generator - Online JSON‑LD for Concerts
Build a complete Event structured data with performer, location, and dates. Get Google‑ready JSON‑LD for tickets.