Education

Free ACT Score Calculator — calculate your ACT composite score, section percentile ranks, SAT equivalent, STEM score, and college tier benchmarks. Supports 2025 and pre-2025 formats.

Free Cubic Equation Solver — instantly find all three roots (real and complex) of any ax³ + bx² + cx + d = 0 equation with step-by-step solution, discriminant analysis, factored form, Vieta's verification, and a polynomial graph.

Free Cumulative Grade Point Average (GPA) calculator — track your GPA across multiple semesters, include prior credit history, plan toward a target GPA, and visualize your grade distribution instantly.

Free GMAT Focus Edition Score Calculator — estimate your composite score (205–805) from Quantitative Reasoning, Verbal Reasoning, and Data Insights section scores, with full percentile rankings and school competitiveness analysis.

Free Graduate Record Examination (GRE) score calculator — instantly convert raw scores to scaled scores, look up Verbal and Quantitative percentile ranks, get an AWA percentile, see your performance tier, compare your scores to field averages, and check GMAT concordance.

Free International English Language Testing System (IELTS) score calculator — convert raw scores (0–40) to band scores, calculate your overall band, and compare against target requirements.

Free Linear Equation Solver — solve single-variable equations (ax + b = c), slope-intercept form (y = mx + b), two-point form, and standard form (Ax + By = C) with step-by-step solutions, line graphs, and form conversions.

Free Matrix Determinant Calculator — compute the determinant of 2x2, 3x3, 4x4, 5x5, and 6x6 matrices with step-by-step solutions using the Sarrus rule and cofactor expansion.

Free matrix inverse calculator with step-by-step Gauss-Jordan elimination and adjugate method. Supports 2×2, 3×3, 4×4, and 5×5 matrices with fraction and decimal output.

Free population growth calculator — model exponential, continuous, logistic, and linear population growth. Calculate final population, doubling time, and view growth timelines with four mathematical models.

Free Potential Energy (PE) calculator for gravitational, elastic, and electric potential energy. Solve for any variable with step-by-step solutions, planet gravity presets, and multi-unit output.

Free Punnett Square Calculator for monohybrid, dihybrid, and trihybrid crosses. Visualize genotype and phenotype ratios, probability percentages, zygosity labels, and Mendelian ratios instantly.

Free Reading Time Calculator — instantly estimate how long it takes to read any text. Enter text or word count, choose your reading speed, and get silent reading time, read-aloud duration, audiobook length, and multi-speed breakdowns.

Free Digital SAT Score Calculator — estimate your Reading & Writing and Math scaled scores (200–800 each) and composite score (400–1600) from raw module answers. Includes percentile ranks, ACT concordance, college tier benchmarks, superscore calculator, and target score gap analysis.

Free typing speed calculator — compute WPM (Words Per Minute), CPM (Characters Per Minute), KPH (Keystrokes Per Hour), net WPM with error penalty, and accuracy percentage. Three input modes: From Typing Session, Convert Speed Units, and From Document.

Free Velocity Calculator — solve for velocity, distance, time, acceleration, or displacement using the four core physics equations: basic speed (v=d/t), kinematic v=u+at, kinematic v²=u²+2as, and average velocity. Supports metric and imperial units with multi-unit output.