Math Calculators & Number Tools

Calculate percentages, increases and decreases.

Simplify ratios and find equivalent ratios.

Solve proportions and missing ratio values.

Find the mean average of numbers.

Generate a random number within a custom range.

Calculate volume for cubes, rectangular prisms, cylinders, cones, spheres, pyramids and triangular prisms.

Calculate area for rectangles, squares, triangles, circles, trapezoids, parallelograms, ellipses and sectors.

Find the least common multiple of two or more positive integers.

Find the greatest common factor of two or more positive integers.

Calculate slope from two points plus line equation, angle, grade and point distance.

Check whether a whole number is prime or composite and list its positive factors.

Calculate percentage increase or decrease from an original value to a new value.

Calculate profit margin, gross margin, markup and target selling price.

Calculate markup, selling price, profit and margin from cost or price.

Advanced calculator for trig, logs, roots, powers, factorials and more.

Calculate and simplify fractions and mixed numbers with steps.

Calculate sale price, savings, stacked discounts, reverse discounts and optional tax.

Calculate tips, tax, bill totals and per-person splits with optional rounding.

Add sales tax or reverse-calculate tax included in a total.

Estimate loan payments, interest, fees, payoff time and amortization.

Estimate mortgage payment, property tax and insurance.

Find factors, factor pairs and prime factorization for a whole number.

Calculate weighted grades and the score needed on a final exam.

Calculate semester and cumulative GPA using course credits.

Compare two heights visually and calculate their exact difference.

Calculate test percentages and generate a complete grading chart.

Calculate population or sample standard deviation, variance and mean.

Solve quadratic equations and find real or complex roots.

Calculate powers using positive, negative or decimal exponents.

Count significant figures and round numbers to a selected number of significant digits.

Calculate nPr permutations with or without repetition.

Calculate nCr combinations with or without repetition.

Convert decimals and repeating decimals to simplified fractions and mixed numbers.

Calculate mean, median, mode, range, quartiles and IQR.

Calculate simple and independent-event probabilities.

Calculate standard score and approximate normal percentile.

Round numbers and decimals using several rounding methods.

Solve a right triangle for a missing leg or hypotenuse.