Everyday Math & Precision Solvers

Calculate volume & surface area for 12+ 3D solids including sphere, cylinder, cone, and cube. Get instant step-by-step formulas, dynamic SVG nets, and unit charts.

P value calculator to calculate p-values for Z, t, chi-square, and F tests. Find one-tailed and two-tailed significance, critical values, and reverse test goals.

Pythagorean theorem calculator to find hypotenuse, leg a, or leg b instantly. Get exact radical simplified roots, step-by-step proofs, area, and angles.

Calculate your weighted grade and required final exam score instantly. Supports letter scales, points, and drop-lowest grades with target goal solver.

Calculate single and multiple event probabilities, odds ratios, conditional Bayes outcomes, and independent or mutually exclusive event series with steps.

Solve proportion and ratio equations (A/B = C/D) instantly. Find unknown X values, simplify ratios, scale recipes, and calculate direct or inverse proportions.

Calculate your final grade and the exact exam score needed to pass or get an A. Supports weighted syllabus categories, grade curves, points, and GPA impact.

Calculate triangle angles and sides from SSS, SAS, ASA, and SSA. Features interactive geometry canvas, SSA ambiguous dual solver, and step-by-step proofs.

Scientific notation converter to convert between standard decimal form, E-notation, and engineering notation. Includes SI metric prefixes and step-by-step math.

Calculate ratios, simplify proportions, and solve for missing value X instantly. Scale dimensions, divide amounts by ratios (A:B:C), and find equivalent fractions.

Calculate significant figures and round numbers to sig figs instantly. Master addition, multiplication rules, scientific notation, and step-by-step digit breakdown.

Solve quadratic equations using this quadratic formula calculator and root finder. Find real or complex roots, discriminant, vertex, and exact radical steps.

Calculate matrix determinants instantly with step-by-step LU decomposition, cofactor expansion, eigenvalues, and invertibility checks for 2x2 up to 8x8 matrices.

Free client-side developer and designer tool.

Calculate sample and population standard deviation, variance, mean, and margin of error instantly. Clean messy datasets with outlier detection and normal curve.

Perform fraction arithmetic with mixed numbers, improper fractions, LCD finding, and step-by-step simplification. 100% private in-browser math cockpit.

High-precision scientific calculator supporting trigonometry, inverse and hyperbolic functions, natural/common logarithms, powers, and memory registers. 100% private.

Calculate cumulative and semester Grade Point Average (GPA) on standard 4.0 or weighted AP/Honors/IB scales with target projection. 100% private in-browser tool.

Calculate arithmetic mean, median, mode, geometric/harmonic mean, sample & population standard deviation, variance, and IQR instantly. 100% private.

Calculate Speed, Distance, or Travel Time instantly with multi-unit conversions (mph, km/h, m/s, knots, pace min/km, min/mile). 100% private in-browser kinematics cockpit.

Calculate screen and image aspect ratios, find proportional dimensions, align video codec macroblocks (Mod 2/4/8), and generate CSS aspect-ratio & padding-bottom hacks.

Calculate percentages, discounts, profit margins, sales tax, and bill splits in real-time.

Calculate exact pixel dimensions, aspect ratio fractions (16:9, 4:3, 21:9, 1:1, 9:16), padding-top percentages, and responsive breakpoints for web and video production.