Conic Sections Playground - Online Circle Ellipse Parabola
Adjust parameters and see how the slice of a cone creates different conic sections. Interactive learning.
UD5 Toolkit
Adjust parameters and see how the slice of a cone creates different conic sections. Interactive learning.
Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.
Check if a food scrap is safe for composting worms. Avoid harming your red wigglers.
Evaluate the Gamma function for real and complex inputs (real part). Extension of factorial. Academic mathematics tool.
Enter a number to find its golden ratio long and short segments. Use for pleasing design layouts. Instant.
Enter panel dimensions and get recommended number of clamps and throat depth. Achieve even pressure.
Build a week of layered mason jar salads. Visual layer order (dressing, grains, greens) to keep fresh. Local save.
Paste a JSON array of objects and download a properly formatted .xlsx Excel file. No server; uses SheetJS in the browser.
Enter expected number of attendees and a distribution model to estimate how many shirts to order per size.
Parse TOML configuration files and convert them into JSON. Validate TOML syntax with highlighted errors. No server round-trips, fully browser-based.
Enter desired balm hardness and get the ratio of beeswax to shea butter and coconut oil. Soothe cracked pads.
Convert between common cooking units: cups, tbsp, tsp, ml, grams (for water/flour/sugar), ounces. Quick reference for international recipes.
Identify a Chinese character by selecting its radicals. List possible Hanzi. Built‑in reference for learners.
Select up to 3 leftover items and get creative meal ideas to use them up. Reduce food waste.
Answer questions about sensitivity, surface, and travel to get the ideal mat thickness.
Calculate how many meal prep containers and of what size you need for a week’s worth of lunches. Breaks down by protein, grain, and veggie compartments.
See a clip of a famous artwork and choose the correct title. Art history fun. Local images.
Move your mouse or finger to create colorful paint splatters on canvas. Great stress reliever. Download as PNG.
Move your mouse to create colorful ink swirls in a simulated fluid. Beautiful and mesmerizing. No install. Just WebGL.
Browse pre‑made emoji combinations and ASCII art. Click to copy directly to clipboard. Perfect for social media bios.
Type any word and generate a fake audio waveform GIF that looks like the word was spoken. Creative social posts. Canvas.
Turn a photo into a high‑contrast ASCII art using only standard text characters. Adjust brightness and character set. Works offline.
Apply a soft watercolor painting effect to your photo. Adjust brush size and color intensity. Download the result. Local canvas.
Upload an RGB image and simulate how it might look when printed in CMYK. See out‑of‑gamut warnings. Pre‑press helper.
Enter a message and render it as an image of dots and dashes. Customizable colors. Great for posters.
Turn any photo into a mosaic of colored blocks or pixel art. Choose block size and palette. Download as PNG. Pure canvas.
Visualize Brownian motion with hundreds of particles. Adjust temperature and viscosity to see diffusion changes. Educational science tool.
Turn your webcam feed into real‑time ASCII art. Adjust density and character set. Fun for streams and demos. No upload.
Experience the four stages of rock tumbling virtually. Start with rough stones and watch them polish over 'days'. Satisfying.
Generate flowing geometric art by layering sine waves with different frequencies, amplitudes, and colors. Download SVG.