Education & Study
Tools for students and teachers: compute your weighted GPA, convert a score to a percentage and a letter grade, find the grade you need on the final exam, evaluate an exam score and generate citations (APA, MLA, Chicago). For math: standard deviation, quadratic equations, GCD and LCM, prime factorization and the Pythagorean theorem, with detailed steps. Clear, instant results, 100% in your browser.
GPA calculator
Each course’s grade and credits → weighted GPA.
Grade calculator
Points earned and possible → percentage and letter grade.
Final grade calculator
Current grade, target and weight → grade needed on the final.
Exam score calculator
Correct answers and threshold → percentage and pass/fail.
Citation generator
Author, title, year… → citation in APA, MLA or Chicago format.
Weighted grade average
Compute your average from grades and their weights.
Attendance calculator
Your attendance rate and how many classes you can still miss.
Words to pages
Estimate the number of pages from words, font size and line spacing.
Certificate maker
An elegant certificate or diploma to print (PNG).
Flashcards
Build a front/back deck and study by flipping.
Standard deviation calculator
Standard deviation, variance, mean, median and quartiles of a data list.
Quadratic equation solver
Discriminant, real or complex roots, exact form, vertex and graph.
GCD and LCM calculator
GCD and LCM of 2 to 20 numbers, with Euclid steps and prime factors.
Prime factorization calculator
Prime factors, primality test, all divisors and the division ladder.
Pythagorean theorem calculator
Missing hypotenuse or leg, exact radical form, angles, area and diagram.
Word search puzzle maker (printable)
Printable word search with answer key, secret message and on-screen play.