Math & Statistics Calculators

Perform fractional arithmetic, track class grades, solve triangles, calculate trigonometry, analyze 2D shapes, model 3D volumes, and run descriptive statistics.

Base64 Encoder & Decoder

Quickly encode strings into Base64 format or decode Base64 strings back to plain text.

Circle Properties Calculator

Calculate the exact diameter, circumference, and area of a circle using its radius.

Circular Cylinder Calculator

Calculate the volume, lateral area, and surface area of a right circular cylinder.

Circular Permutation Calculator

Calculate the number of ways to arrange items in a circle (circular permutation).

Combination with Replacement

Calculate combinations where items can be chosen multiple times (with replacement).

Comparing Fractions Calculator

Quickly determine which fraction is larger using cross-multiplication.

Complex Fraction Calculator

Divide and simplify complex nested fractions efficiently.

Cone Volume & Surface Area

Calculate the volume, lateral surface area, and total surface area of a circular cone.

Conical Frustum Calculator

Calculate the volume, lateral area, and slant height of a conical frustum.

Cube Root Calculator

Find the exact or decimal cube root of any positive or negative number.

Cylinder Volume & Surface Area

Calculate the cubic volume and total surface area of a right circular cylinder.

Equivalent Fractions

Generate a list of fractions that are mathematically equivalent to your input.

Estimating Sums and Differences of Fractions

Learn to quickly estimate the sum or difference of two fractions using half-rounding.

Euclid

Compute the Greatest Common Divisor (GCD) using the step-by-step Euclidean algorithm.

Even Permutations Calculator

Calculate the number of even permutations (the Alternating Group) for a set of size n.

Fibonacci Sequence Calculator

Generate any Fibonacci number in the sequence instantly up to N=1000.

Fifth Roots Calculator

Quickly find the fifth root of any positive or negative number.

FOIL Method Calculator

Expand the multiplication of two binomials instantly using the FOIL method.

Fourth Roots Calculator

Find the principal fourth root of a number, equivalent to taking the square root twice.

Frustum Volume Calculator

Calculate the exact volume of a conical frustum (a cone with the top cut off).

Inverse Trig Functions Calculator

Calculate angles using inverse trigonometric functions (arcsin, arccos, arctan).

Math Word Problems: Addition & Multiplication

Solve real-world math word problems involving addition and multiplication logic.

Math Word Problems: Division

Solve division word problems to find the number of equal groups and remainders.

Mean, Median, Mode, Range Calculator

Calculate the mean, median, mode, and range for a dataset instantly.

Percentage & Percentage Change Calculator

Calculate percentages easily: find X% of Y, determine what percentage X is of Y, and compute percentage change (increase or decrease) between two values.

Platonic Solids Calculator

Calculate the volume, area, faces, edges, and vertices for all five Platonic solids.

Polynomial Division Calculator

Divide a quadratic polynomial by a linear binomial to find the quotient and remainder.

Regular Polygon Area Calculator

Calculate the area of any regular polygon given its number of sides and side length.

Roman Numerals Converter

Convert standard decimal numbers to Roman Numerals, or translate Roman Numerals back to numbers.

Round to Nearest Multiple

Round any number to the nearest chosen multiple (e.g., nearest 5, nearest 0.25).

Significant Figures Rounding Calculator

Round any number to a specific number of significant figures instantly.

Simplify Radical Expressions

Extract perfect squares to simplify radical expressions and square roots cleanly.

Simplifying Complex Fractions

Simplify fractions within fractions (complex fractions) into a single standard fraction.

Sphere Volume & Surface Area

Calculate the exact volume and surface area of a sphere using its radius.

Synthetic Division Calculator

Perform synthetic division instantly using polynomial coefficients and a root.

Trapezoid Area Calculator

Calculate the area of a trapezoid using its two bases and height.

Triangle Area Calculator

Calculate the exact area of any triangle using its base and height.

Trigonometric Functions Calculator f(x)

Evaluate primary trigonometric functions (sine, cosine, tangent) at any degree angle.

Trinomial Factoring Calculator

Factor quadratic trinomials into binomial pairs.

URL Encoder & Decoder

Encode unsafe characters for use in URLs or decode encoded strings back to readable text.

Vote Percentage Calculator

Calculate vote percentage, votes needed to win, and lead over opponents. Perfect for elections, polls, and voting analysis.

Weighted Average Calculator

Calculate the weighted mean of a set of values with corresponding weights. Easily add and delete rows reactively.

What is My IP Address?

Instantly check your public IP address used to communicate over the internet.

Word to Standard Notation Calculator

Convert simple number words into standard mathematical notation.