Tools for Students
186 toolsTools to boost your study sessions. Transcribe lectures, format text, train your brain with puzzles, generate focus sounds, and practice typing.
Weather
Hourly and 9-day weather from two independent forecast models at once — with the disagreement between them shown, not hidden.
Graph paper
Grid, millimetre, dots, isometric, staves and handwriting guides as PDF with exact millimetres and a printer calibration.
Delay-line reservoir computing
Move the feedback gain and watch the reservoir’s memory change.
Audio Translator
Translate an audio recording into another language and hear it: podcasts, interviews, lectures, voice notes. Audio, transcript and subtitles out.
Calendar
Calendar with tasks and repeating entries. Week, month, list. Subscribe from Google or Apple, publish your schedule on your profile.
Ear Trainer
Hearing which frequency is the problem is a skill built by repetition. Everything you need for that is here.
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.
Color Mixer
Mix two or more colors and see the real result — like real paint (blue + yellow = green), as light, or digital. In your browser.
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.
Moon
Moon phase now, lunar day counted from moonrise at your location, rise and set, distance and a phase calendar. 3D globe with real libration.
Space Weather
Live Kp index, geomagnetic storm level, solar wind and the aurora forecast on a map. See if the northern lights are visible tonight.
Aurora Forecast
Live aurora oval map plus a straight answer on whether the northern lights are visible from your spot tonight: darkness, cloud, moon, Kp.
Earthquake Map
A live map of recent earthquakes worldwide from USGS and EMSC — magnitude, depth and time for each quake, updated continuously. Free.
Measure on map
Trace a plot on the map and get its area on the WGS84 ellipsoid — in hectares or acres — not the area of the picture on screen.
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.
