Parker Rowland ✓ Verified expert

Free hexagon calculator. Enter side, area, perimeter, diagonal, or apothem to solve the rest. Regular hexagon area formula A = (3√3/2)a² with examples.

Free cylinder volume calculator. Solve solid or hollow cylinder (pipe) volume from radius or diameter. Cylinder volume formula V = πr²h with liters and gallons.

Free area of a triangle calculator. Solve from base and height, three sides, or two sides and an angle. Triangle area formula A = ½ × b × h explained with examples.

Free Pythagorean theorem calculator. Enter any two sides to find the third with a² + b² = c². Solve the hypotenuse or a leg, plus area and perimeter.

Free pyramid volume calculator. Solve square, rectangular, or regular polygon base pyramids. Pyramid volume formula V = ⅓ × base area × height with examples.

Free arc length calculator. Solve arc length, sector area, and chord from angle and radius. Arc length formula L = rθ in degrees or radians with examples.

Ratio calculator to solve A:B=C:D, simplify ratios, check equivalents, and scale by total. Free step-by-step answers with worked examples.

Square root calculator with steps. Get the exact radical and decimal for any number, plus cube roots, fractions, and negative roots. √72 = 6√2 ≈ 8.4853.

BODMAS and PEMDAS calculator with steps. Enter any expression and see each operation solved in order: brackets, exponents, division, multiplication, addition, subtraction.

Proportion calculator that solves for x with full steps. Enter three values, leave one blank, and get the missing number instantly. Fractions and decimals too.

Free point slope form calculator. Enter a point and slope or two points to get point slope, slope intercept, and standard form with steps.

Axis of symmetry calculator finds x = -b/2a instantly. Enter standard, vertex, or factored form for the axis, vertex, and graph with full steps.

Antilog calculator finds the inverse log in base 10 or e. See the antilog formula, worked examples (1.5, -1, 2, 2.303) and a full antilog value table.

Free slope intercept form calculator. Enter two points, a slope, or an equation like 4x-20y=-160 to find y = mx + b with steps and a graph.

Free one-way ANOVA calculator. Enter your groups to get the F statistic, p-value, and a full ANOVA table with step-by-step working. Worked examples included.

Geometric Mean Calculator with steps. Find the geometric mean of any numbers instantly, plus worked answers for common pairs like 9 and 25 or 8 and 32.

Free critical value calculator for z, t, chi-square, and F tests. Get exact one- and two-tailed values with steps, plus full z and t critical value tables.

Quadratic formula calculator solves ax²+bx+c=0 with full steps, roots, and discriminant. Paste your equation and get worked-out answers instantly.

Sum of squares calculator with the SS formula: SS = Σ(x − x̄)². Enter your data to get the mean, each squared deviation, and the total, with steps shown.

Free variance calculator finds sample and population variance with step-by-step solution, mean, sum of squares, and standard deviation. Enter data, get answer.

Coefficient of variation calculator finds CV % from your data with mean, standard deviation, and full step-by-step working. Sample or population, free.

Free p value calculator. Enter a z score, t value, chi-square or F statistic and get the exact p value with full working shown, step by step.

Free hypothesis testing calculator for one-sample mean tests. Get the test statistic, critical value, p-value, and a clear reject or accept H0 decision with steps.

Chi square calculator with steps. Get the χ² statistic, degrees of freedom, p value, and the expected frequency for every cell, for goodness of fit or independence.

Free sig fig calculator counts significant figures, rounds to any number of sig figs, and solves multiplication and addition with correct rounding. See steps.

Free percentage calculator. Find what X% of Y is, what percent one number is of another, and percent increase or decrease with full worked steps.