Math & Science Calculators

Calculate cross product of two 3D vectors. Enter i, j, k components to find perpendicular vector, magnitude, direction, and unit vector with detailed steps.

Factor trinomials ax² + bx + c instantly. Enter coefficients to get factored form, step-by-step solutions, and verify results with detailed explanations.

Analyze signals with FFT: set sampling rate and length, choose window and zero‑padding, then view magnitude and phase spectra with peak markers.

Compute the least common multiple (LCM) of 2–10 positive integers. Enter values, get step-by-step method using GCD or prime factors, and share deep links to preset inputs.

Multiply decimals accurately with step-by-step examples, place value alignment, and consistent rounding. Enter two decimals, set precision, and get product with steps and tips.

Multiply polynomials with step-by-step solutions and detailed explanations. Enter coefficients to get instant results with distributive property breakdown.

Multiply matrices of common sizes (2×2, 3×3, 2×3×3×2) with step-by-step workings, rules, and examples. Copy results as CSV/LaTeX for homework or research.

Compute eigenvalues and eigenvectors for 2x2 and 3x3 matrices. Supports analytic solution (2x2) and QR iteration (3x3); includes examples, steps, and interpretation.

Multiply fractions step by step: cross-cancel, multiply across, and auto-simplify to lowest terms or mixed numbers. Supports negatives.

Perform long multiplication step by step with partial products and carry explanations. Enter two integers to see aligned steps and the final product.

Solve a:b = c:d with cross-multiplication, find missing values, simplify ratios, set precision, and check proportionality.

Calculate population or sample variance with clear steps and formula. Paste data, choose mode/precision, get variance, mean, sum of squares and standard deviation.

Mixed number calculator for add, subtract, multiply, divide, and convert. Switch between mixed, improper fraction, and decimal with clear steps and results.

Calculate trigonometric functions using the unit circle. Find exact values for sin, cos, tan, and other trig functions with our free online calculator. Perfect for students and professionals.

Solve quadratic equations by completing the square. See step-by-step process, vertex (h,k), discriminant and solutions for ax²+bx+c=0.

Free AP Statistics calculator for mean, median, mode, standard deviation, variance, quartiles, skewness, kurtosis, z-scores and percentiles.

Estimate your AP U.S. History composite and predicted 1–5 score from MCQ, SAQ, DBQ and LEQ. Uses College Board section weights.

Calculate eigenvectors and eigenvalues of 2x2 and 3x3 matrices with step-by-step solutions. Essential linear algebra tool for engineering, physics, and data analysis.

Calculate weighted GPA, semester averages, and academic performance. Supports percentage, letter grades, and 4.0 scale with credit hours.

Convert ASCII codes to text and text to ASCII codes. Decode ASCII values to readable text or encode text to ASCII numbers.

Calculate division quotients, remainders, and perform long division with step-by-step solutions. Perfect for students, teachers, and math enthusiasts.

Professional standard calculator with basic arithmetic operations, memory functions, and percentage calculations. Perfect for everyday math tasks.

Add, subtract, multiply, and divide fractions

Calculate percentages fast: percentage of a number, what percent one number is of another, percentage increase/decrease, and percentage change. Clear steps and instant results.