Student tools
Free tools for students: AI text detector, grade, GPA and attendance calculators, an exam study planner, readability checker, citation generator and school maths solvers.
AI text detector: check for ChatGPT-style writing
Free AI content detector that checks writing for patterns typical of ChatGPT, Gemini and Claude: uniform sentences, stock phrases and heavy transitions. Runs in your browser, no sign-up.
Writing & AIWeighted grade calculator
Enter each assignment, quiz or exam with its grade and weight to get your course average, letter grade and the score you need on the rest.
Student toolsGPA calculator
Calculate a credit-weighted average from grade points you provide.
Maths & educationFinal-exam grade calculator
Calculate the final-exam score needed for a target course grade.
Maths & educationExam study planner with spaced repetition
Turn your topics and exam date into a day-by-day study schedule with spaced reviews and final revision days. Download it as an Excel checklist.
Student toolsCitation generator
Format supplied source facts into a basic reference; verify style rules.
Writing & AIReadability checker: Flesch score and grade level
Check how easy your text is to read with Flesch Reading Ease, Flesch–Kincaid, Gunning Fog, SMOG, Coleman–Liau and ARI, plus long sentences to fix.
Text & writingAttendance percentage calculator
Check your attendance percentage, how many classes you can miss and still stay at 75 %, or how many you must attend to get back above it.
Student toolsPercentage to letter grade and GPA converter
Convert a percentage to a letter grade and 4.0 GPA points on the US or Canadian scale, or to a UK degree class, with the full grading table.
Student toolsTest score and grade calculator
Turn the number of questions and how many you got right or wrong into a percentage score and letter grade.
Student toolsCumulative GPA calculator
Combine your current GPA and credits with this term’s results, and see the GPA you need in future credits to reach a target.
Student tools · United StatesCGPA to percentage calculator
Convert a 10-point CGPA to a percentage (CBSE and many Indian universities use × 9.5), or a percentage back to CGPA.
Student toolsWords to pages calculator
Estimate how many pages an essay will fill for a font, size and line spacing, or how many words fit a page limit, plus reading and speaking time.
Student toolsStudent loan repayment calculator
Monthly payment, total interest and payoff time for a student loan, including interest that builds up during the grace period and the effect of paying extra.
Student toolsPomodoro study schedule planner
Plan focus sessions and breaks with the Pomodoro technique and see exactly when each block starts and when you will finish.
Student toolsPercentage calculator
Find a percentage of a number for discounts, allocations and proportional amounts.
Money & numbersAverage & median calculator
Calculate mean, median, sum, minimum and maximum from comma- or newline-separated numbers.
Money & numbersWord & character counter
Count words, visible characters, paragraphs and lines locally, using language-aware segmentation.
Text & writingReading time calculator
Estimate reading time using your word count and a reading speed you choose.
Text & writingPDF merger
Combine PDFs in upload order into one document.
PDF & documents · Server processingPDF to Word
Extract selectable text into an editable DOCX, not a layout-identical copy.
PDF & documents · Server processingImage-to-text OCR
Extract text from images with English, French, Spanish or German OCR.
Image tools · Server processingGrammar and spelling checker
Suggest corrections and explain changes without overwriting your original.
Writing & AI · Optional serviceParaphrasing tool
Rewrite supplied text for clarity while preserving its meaning.
Writing & AI · Optional serviceText and document summarizer
Summarize supplied text or a text-based document; verify important details.
Writing & AI · Optional serviceResume and CV builder
Create a clean PDF resume from your own facts, with no AI claims.
Writing & AI · Server processingCover-letter generator
Draft from your real experience and job description; no invented achievements.
Writing & AI · Optional serviceTyping speed test
Measure words per minute and positional accuracy in a timed local test.
Everyday utilitiesScientific calculator
Evaluate arithmetic, powers and trigonometric functions in radians without eval.
Maths & educationFraction calculator
Add, subtract, multiply or divide rational numbers exactly.
Maths & educationEquation solver
Solve real linear and quadratic equations ax² + bx + c = 0.
Maths & educationStandard-deviation calculator
Calculate mean, sample and population variance and standard deviation.
Maths & educationSignificant figures calculator and rounder
Count significant figures in any number and round it to the number of sig figs you need, with scientific notation.
Maths & educationScientific notation converter
Convert numbers to and from scientific, E and engineering notation exactly, including very large and very small values.
Maths & educationPercent error calculator
Calculate percent error, absolute error and relative error between a measured value and the accepted or theoretical value.
Maths & educationPermutation and combination calculator (nPr, nCr)
Calculate permutations nPr and combinations nCr exactly, with or without repetition, for n up to 1,000.
Maths & educationGCD and LCM calculator
Find the greatest common divisor and least common multiple of two or more whole numbers, of any size.
Maths & educationPrime factorization calculator
Break a whole number into prime factors, check whether it is prime and list all of its divisors.
Maths & educationSlope calculator from two points
Find the slope, y-intercept, line equation, angle, distance and midpoint from two points.
Maths & educationPythagorean theorem calculator
Solve a right triangle: find the hypotenuse or a missing side with a² + b² = c², plus angles, area and perimeter.
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