UD5 Toolkit
Number Line Generator - Online Printable Math Visual Aid
Create custom number lines (0-20, negative, fractions, decimals) for math education. Adjustable ticks and labels. Instant download.
Tag: Math Tools - Calculators & Solvers
20+ toolsMath Worksheet Generator - Online Printable Drills for Kids
Generate printable math worksheets for addition, subtraction, multiplication, and division. Choose difficulty and number of problems. Answer key included.
CSS abs() and sign() Functions Demo - Online Math
Use the abs() and sign() CSS functions to create interesting layouts. See computed values live. Cutting‑edge CSS.
Conic Sections Playground - Online Circle Ellipse Parabola
Adjust parameters and see how the slice of a cone creates different conic sections. Interactive learning.
Mersenne Prime Checker - Online 2^p‑1 Validation
Check if a number of the form 2^p‑1 is a Mersenne prime. Quick Lucas‑Lehmer test simulation for small p.
Math Expression Evaluator - Online Type & Calculate
Type a mathematical expression like 'sqrt(16)+sin(pi/2)' and get the result instantly. Supports popular functions. Local.
Next Prime Number Finder - Online Integer Sequence
Enter any integer and quickly find the next prime number after it. Perfect for hashing and puzzles.
2D Vector Field Plotter - Online Math and Physics
Enter a mathematical function for dx and dy and see the vector field arrows. Perfect for studying differential equations.
Mental Math Trainer - Online Timed Arithmetic
Solve random arithmetic problems under a time limit. Track your score and improve mental calculation. No data collected.
Random Math Problem Generator - Online Arithmetic Drill
Generate a sheet of random arithmetic problems (+, -, Ă—, Ă·) with configurable digits. For kids and brain training.
Prime Factor Tree Generator - Online Visual Factorization
Enter a number and see an animated factor tree breaking it down to primes. Perfect for teaching factorization.
Euler's Number Viewer - Online Show Many Digits of e
View thousands of digits of Euler's number (e). Click to copy a block. For math enthusiasts.
Online Scientific Calculator - Free Advanced Math Tool
Full-featured scientific calculator with trigonometric, logarithmic, and exponential functions. Clean interface and keyboard support. No installation required.
Koch Snowflake Visualizer - Online Fractal Curve Generator
Generate the Koch snowflake fractal to a desired iteration level. See how the perimeter grows. Interactive geometric art.
Ellipse Drawing Tool - Online Interactive Geometry
Draw perfect ellipses by dragging focal points and a point on the curve. See the equation update dynamically. Educational.
Probability Calculator - Online Odds & Combinatorics Tool
Compute probability for simple events, as well as permutations and combinations (nPr, nCr). Useful for statistics and game theory. Browser-based math.
Magic Square Generator - Online Create n x n Constant Sum Grid
Generate magic squares of odd order (3x3, 5x5, …). See the sum constant and verify rows, columns, diagonals. Educational math toy.
Function Graph Plotter - Online Math Visualizer 2D
Plot one or more mathematical functions f(x) on a 2D canvas. Zoom, pan, and see intersections. Great for calculus and algebra. Purely client‑side.
Percentage Calculator - Online Find Percent, Increase & Decrease
Perform common percentage calculations: find percent of a number, percentage increase/decrease, and more. Simple, fast, and always available for free.
Pi Digits Viewer - Online Scrolling Infinite π
Scroll through thousands of pre‑computed digits of π. Search for a specific string of digits. For math lovers.