Tools for Students
213 toolsTools to boost your study sessions. Transcribe lectures, format text, train your brain with puzzles, generate focus sounds, and practice typing.
Unlock PDF
Remove the password from a PDF you can open. Decrypts, drops owner restrictions, lets you copy and print. No signup.
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.
OCR Text Extractor
Drop an image, PDF or a full folder — get editable text, Word, Excel or searchable PDF.
Camera Text Reader
Point your camera at text or upload a photo — the tool recognizes it and reads it aloud.
Online Protractor
Online protractor with transparent overlay and photo measurement — mm calibration, multi-angle, PNG/PDF/JSON export. Handy for builders, carpenters and students.
Online Ruler
Free online ruler in actual size. Calibrate to your screen and measure in cm, mm and inches — on screen or on a photo.
Barcode Scanner
Scan any barcode or QR code from camera or uploaded image. Get product info, links, and more.
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.
File Transfer
Drop a file or folder, share the 6-letter code or QR — the transfer flows directly between browsers.
Visa-Free Countries by Passport
Pick your passport — we show every destination, sorted by entry requirement.
Schengen 90/180 Calculator
Add your Schengen trips — see days used, days left and your must-leave date.
Archive Extractor
Open and extract ZIP, RAR, 7z, TAR and 70+ archive formats online, including password-protected ones. Preview files in your browser.
Archive Maker
Pack files and folders into ZIP, 7z, TAR.GZ or TAR.XZ: compression level, AES-256 password, split into volumes. Online, no install.
Archive Repair
Diagnose and repair damaged ZIP, RAR, 7z and TAR archives. Finds why the archive will not open and pulls out the files that survived.
Microsoft Access Database Recovery
Pulls tables and records out of damaged .accdb and .mdb files, even when the header or catalog is destroyed. Exports to Excel, CSV, JSON and SQL.
Distance Between Cities
Measure the straight-line distance between two cities, with bearing, midpoint, flight time and a map.
ISO Extractor
Extract ISO files online with UDF and Joliet support. Stream 16GB+ images, preview files in-tree, verify SHA-256 in your browser.
BIN/CUE to ISO
Convert BIN/CUE to ISO online. Auto-detects MODE1/2 sector layouts, extracts CD-DA audio as WAV, parses multi-track cuesheets. In the browser.
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.
