Tools for Educators & Teachers
51 toolsDigital tools for modern classrooms. Text-to-speech for reading assistance, visual schedules, sign language resources, live captions, and accessibility testing.
Drawing for Kids
Free online drawing tool for kids with brushes, stamps, pixel art mode, 120+ shapes, and color palette.
Online Alarm Clock
Free online alarm clock with timer, stopwatch, Pomodoro, and world clock. 12 alarm sounds, math puzzle dismiss, screen awake.
AI Audio Detector
Upload an audio file to detect AI-generated content. 12 acoustic methods + opt-in deep stem analysis.
Sheet Music to MIDI
Scan any score photo or PDF and hear the notes back.
Memory Game
Match card pairs to train your memory with adjustable difficulty.
Number to Words
Spell numbers and amounts with real grammar — seven languages, currency, ordinals, cheques and batch mode.
Military Time Converter
Convert between 24-hour military time and 12-hour AM/PM format with live sync, batch mode and reference chart.
Countdown to Date
Live countdown timer to any date with themes, full-screen and shareable link
Percentage Calculator
Percent of a number, percent change, discount, tip, VAT, markup
GPA Calculator
Add each course with its letter grade and credit hours to get your credit-weighted GPA.
Online Protractor
Free online protractor with transparent overlay and photo measurement — calibration, multi-angle, PNG/PDF/JSON export.
Online Stopwatch
Precise online stopwatch with laps, splits, sparkline and shareable link
Slideshow Maker
Drop multiple photos, add an audio track, pick a transition — get a finished video, slide deck or PDF in one click.
Typing Trainer
tools/typing-trainer.hint
Word of the Day
tools/word-of-the-day.hint
Julian ↔ Gregorian
tools/julian-gregorian-converter.hint
Distance Between Cities
Measure the straight-line distance between two cities, with bearing, midpoint, flight time and a map.
PID Tuning Simulator
Adjust Kp, Ki, Kd to see the step-response curve update in real time.
Line-Follower Track Generator
Design a closed-loop course, preview it on-screen, then print or download a tiled PDF across multiple A4/Letter pages.
Forward Kinematics Visualizer
Visualize serial robot arm kinematics interactively using Denavit–Hartenberg parameters.
Syllable Counter
tools/syllable-counter.hint
English Vowel Trainer
Hold the vowel like a long, steady note — don't say the consonants around it. Record somewhere quiet for the clearest reading.
English Level Test
tools/english-level-test.hint
Hourglass Timer
Set a duration and watch the sand run through the glass.
