Free tools for education calculations and conversions. All tools run in your browser with no data sent to any server.
All Education Tools
Prime Number Checker
Check if a number is prime and see a quick reason
Fraction Visualizer
Visualize a fraction and see the simplified form
Multiplication Table
Generate a multiplication table up to any size
Unit Circle
Common unit circle angles with sine and cosine values
GPA Calculator
Calculate GPA from course grades and credit hours
Final Grade Calculator
Calculate required final exam score for target grade
Grade Calculator
Calculate your weighted course grade from components
Percentage to GPA Converter
Convert any percentage grade to GPA on a 4.0 scale
GPA to Percentage Converter
Convert GPA to percentage using 4.0, 5.0, or 10.0 scale
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers
Prime Factorization Calculator
Find prime factors of any number with visualization
Long Division Calculator
Perform long division with step-by-step process
Study Time Planner
Allocate study hours across subjects by priority
Number Line Visualizer
Plot points and intervals on an interactive number line
Citation Generator
Generate MLA, APA, Chicago, and Harvard citations for books, websites, and journals
Flashcard Generator
Create, study, and self-test with custom flashcard decks stored in your browser
Periodic Table
Interactive periodic table with atomic data, electron configurations, and search
Molarity Calculator
Calculate molarity, moles, volume, and molar mass for chemistry solutions
Dilution Calculator
Calculate solution dilutions using C1V1 = C2V2 with serial dilution support
Reading Speed Calculator
Test your reading speed in WPM and estimate time to read books and articles
Sorting Algorithm Visualizer
Watch 10 sorting algorithms animate step by step with pseudocode, comparisons, and swaps
Pathfinding Algorithm Visualizer
Watch A*, Dijkstra, BFS, DFS, and Greedy BFS find paths on an interactive grid
Data Structure Visualizer
Visualize BST, AVL tree, and heap operations with animated inserts, deletes, and rotations
Recursion Visualizer
Watch the call stack build and unwind for Fibonacci, factorial, Tower of Hanoi, and more
Hash Table Visualizer
Insert keys and watch hashing, collisions, chaining, and open addressing animate step by step
Graph Traversal Visualizer
Build graphs and watch BFS, DFS, and topological sort traverse nodes in real time
Big-O Notation Visualizer
Interactive plot of O(1) to O(n!) complexity curves with operation count comparison
Fourier Transform Visualizer
Draw a waveform and watch it decompose into sine and cosine components in real time
Linear Algebra Visualizer
Apply 2D matrix transformations and watch vectors rotate, scale, and shear on a coordinate grid
Rubric Builder
Create custom grading rubrics with criteria, levels, and point values for any assignment
Weighted Grade Calculator
Calculate your weighted average grade across assignments and categories
Final Exam Grade Calculator
Find out what score you need on your final exam to get your desired grade
Random Student Group Generator
Create random groups from a class list for activities and projects
Grade Curve Calculator
Apply bell curve, square root, linear shift, or percentage scaling to test scores