Tools for Students
144 toolsTools to boost your study sessions. Transcribe lectures, format text, train your brain with puzzles, generate focus sounds, and practice typing.
Synonyms of a word
Find synonyms for any word in 9 languages — our vetted dictionary plus Wiktionary, grouped by meaning. Online, no sign-up.
Breadboard Simulator
A virtual solderless breadboard: plug parts into holes, run jumpers — the circuit really computes.
Perfboard Layout
Lay parts out on a solder board, draw the traces and check the circuit before you pick up the iron.
Lorem Ipsum
Generate placeholder text in 10 languages — exact word or character count, HTML, Markdown or plain. Presets for meta, tweet, SMS.
Text Rewriter
Rewrite editor: paraphrase, change tone, shorten, simplify or fix your text — in its own language, with the changes highlighted.
Air Draw
A free tool to draw in the air with your hand: a hand-tracking model follows your fingertip and a neon brush paints the line. Pinch your fingers to draw, open them to stop.
Russian cursive
See how any Russian letter or word is written in cursive, play the writing animation and print a tracing worksheet.
Portuguese cursive
See how any letter or word is written in Brazilian school cursive (letra cursiva), play the stroke animation and print a tracing worksheet.
Secret Language
Type a secret, get innocent-looking text to send anywhere; paste it back to recover the exact message.
3D Earth Globe
Interactive 3D Earth globe with real-time day & night, sun position, country search and live ISS tracking. Free, in your browser.
Earthquake Map
A live map of recent earthquakes worldwide from USGS and EMSC — magnitude, depth and time for each quake, updated continuously. Free.
Wildfire Map
A live map of active wildfire hotspots worldwide from NASA satellites — heat detections from the last 24 hours, ranked by fire power. Free.
Satellite Tracker
Track satellites live on a map, see Starlink, and find out when the ISS will pass over your location — propagated in your browser. Free.
Sun & Moon
Find sunrise, sunset, golden hour, day length and the moon phase for any location, with live sun and moon directions on a map. Free.
Meteor Showers
See the next meteor shower, a live peak countdown, and whether the radiant is up, the sky dark and the moon out of the way for your location. Free.
Light Pollution Map
See light pollution on a map and tap anywhere for the exact night-sky brightness in mag/arcsec² — find the darkest skies near you. Free.
Wind Map
Watch live animated wind across the globe from the GFS model — wind speed and direction anywhere, with a reading for your own location. Free.
Flight Tracker
Track aircraft in real time on a live map and find any flight by number — with altitude, speed and aircraft type. Free, in your browser.
Animal Vision Simulator
Pick an animal and a source, then drag the slider to compare your vision with theirs.
Document photo
Upload a front-facing portrait — your face is fitted to the size of the document you pick.
How Many Days Have I Lived
See exactly how many days you have lived since birth — with weeks, hours, a live counter, milestone dates and your life in weeks. Free.
Cities Game
Name a city; the next must begin with its last letter.
Logic Games for Kids
Free adaptive logic puzzles for kids 5–12: patterns, odd-one-out, analogies, shapes, and deduction. Voice narration and a parent skill report.
Currency Converter
Live mid-market rates, cached 10 minutes to stay fast. Pick a pair and start typing.
