English Irregular Verb Quiz – Online Past Tense Practice
Randomly given base form, type past simple and past participle. Score tracking.
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Randomly given base form, type past simple and past participle. Score tracking.
Play the Pig dice game: roll to accumulate points, but a 1 ends your turn. First to 100 wins. Simple hot‑seat local game.
Rate symptoms severity daily and add notes. Visual pain map. Export for doctor visit. Private local storage.
Roll any number of dice thousands of times and see a live bar chart of the sum distribution. Great for game designers.
Type JavaScript expressions and see output like a real browser console. Supports console.log, error, warn. Use for quick testing without DevTools.
Calculate probability of getting a specific sum when rolling multiple dice. Visual bar chart. Useful for tabletop RPG players. Instant local computation.
Generate a sample sleep schedule for babies 0-24 months based on age-appropriate wake windows. Nap count and bedtime suggestions. Educational reference.
Visualize the probability distribution of dice rolls as a color‑coded heatmap. For any NdM combination. RPG strategist's dream.
Type sender and recipient addresses and format them for printing on a standard envelope. No special software.
Connect to a WebSocket endpoint, send messages, and view the stream of received data. Perfect for debugging real‑time apps.
Display used/total/limit JS heap size using performance.memory. Take snapshots and see growth. Simple memory leak detection.
Quickly find the final price after a percentage discount. Also works in reverse to find the original price. Handy for budget shoppers.
Press any key combination and record the sequence. Export as JSON or human‑readable text. Perfect for documenting shortcuts.
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Enter bolt diameter and applied torque to estimate clamping force. Use standard friction factors.
Enter two date‑time values and get the exact years, months, days, hours, minutes difference. Word output also.
Test the powerful :has() pseudo‑class. Write selectors like .card:has(img) and see the live result. Revolutionary for CSS architecture.
Compare insulation materials and thicknesses to achieve a target R-value. Understand U-factor. Educational home improvement tool. Local.
Enter HSL values and get the exact RGB representation. Also shows hex. For fine‑tuning design tokens. Client‑side.
Enter your elevation and find the exact boiling point of water. Useful for high‑altitude cooking and tea brewing. Local math.
Drag a positioned box and see the top/right/bottom/left values change. Understand containing blocks. Visual.
Generate a random, structured daily routine with time blocks. Shake up your day. Pure fun.
Generate a silly or absurd company policy item. Perfect for a quick laugh during a dull meeting. Local fun.
Generate a unique, beautiful random gradient background with each click. Copy the CSS code. Endless inspiration.
Enter the URL of any image and receive a random harmonious palette extracted from it. Click to regen. For quick inspiration.
Generate a humorous, realistic‑looking git commit message. Perfect for testing or filling mock repos.
Paste your own text and generate a random sentence that mimics its style. Use for creative writing prompts or testing. Fully local.
Click to get a random HTTP status code with its name and description. See 418 I'm a teapot. Fun for devs.
Get a beautiful, hand‑picked color combination instead of purely random. Each palette has a name and copyable hex codes.
Create a note that's overly polite yet clearly annoyed. Choose a topic and get a draft. For harmless pranks.