Yarn Weight Converter – Online Wrap Per Inch & Gauge Tester
Use wrap‑per‑inch (WPI) to identify mystery yarn and see equivalent standard weights (fingering, worsted). Compensate gauge.
UD5 Toolkit
Online Airline Carry-On Compliance Tool — Check if your bag fits major airline restrictions instantly
Use wrap‑per‑inch (WPI) to identify mystery yarn and see equivalent standard weights (fingering, worsted). Compensate gauge.
Choose fabric type and weight to see the ideal needle size and point style. Prevent skipped stitches and snags.
Select playing style (rhythm, lead, strumming) and string gauge to get the recommended pick thickness in mm.
Select shoe size and riding style to get recommended deck width. Visual comparison.
Match gap size around doors/windows to the correct type of weather stripping (foam, V-strip, door sweep). Save energy.
Simulate the 7‑bag randomizer to see upcoming piece sequences. Practice your opening for competitive Tetris.
Animated guide to sew a basic book or journal. Step-by-step with tips. Creative starter.
Calculate developed length for a bend. Enter thickness, angle, inside radius, and K-factor. Essential for metalworking.
Randomly given state names, type the 2‑letter postal code. Track accuracy.
Randomly picks a specific aspect to focus on (naming, security, performance) during code review. Sharpen reviews.
Enter a URL and drag a slider to change the viewport width smoothly. See exactly where your layout breaks. No iframe limits.
Pick colors from a palette or use the eye dropper to sample colors from your screen. Converts between HEX, RGB, HSL. An essential tool for designers.
Enter a palette of colors and see a grid showing whether each foreground/background pair passes AA or AAA contrast. Must for designers.
Enter a list of names and spin a wheel to pick a random winner. Remove picked names to avoid duplicates. Perfect for classrooms or contests.
A sound-enabled spinning wheel with your custom options. Exciting animation and result reveal. Local only.
Build the same layout with both Grid and Flexbox side by side. See the code differences and visual results.
Unscramble jumbled letters to form words. Timed challenge mode with hints. Compares against built-in dictionary. Improve vocabulary while having fun.
Create the perfect brine for refrigerator pickles. Adjust ratios by weight. Quick and safe recipe tool.
Searchable list of Q-codes with meanings. Also includes RST system. Prepare for license.
Enter a color palette and see how it looks for different types of color vision deficiency. Get warnings on conflicting colors.
Paste body text and test different font/background combos. See an actual passage rendered, not just a ratio. True feel for legibility.
Fill out a clean budget worksheet with income and expense categories. See totals and print. No data stored.
Browse a beautifully designed periodic table with electron shell visualization and key facts. Click any element to learn more. Offline ready.
Set the number of lines and generate the CSS for multi‑line truncation using the standard line‑clamp and fallback. Quick copy.
Calculate number of charcoal briquets for Dutch oven cooking temp. Also includes multi-stage cooking time.
Test yourself on international calling codes. Random country, type the code. Or reverse. Perfect for travelers.
Add grid items beyond defined tracks and see how implicit rows/columns expand. Set sizes interactively. Master the grid.
Scramble letters of any word or sentence to create anagrams. Great for brain teasers and vocabulary games. Simple, fun, and client-side.
Convert between pace (min/km, min/mile) and speed (km/h, mph). Predict race finish times for 5k, 10k, half and full marathon based on a recent split. Works offline.
Mix and save colors using a color picker. Drag to reorder. Export as CSS variables or hex list.