Math & Statistics Calculators

Lattice Multiplication Calculator

Multiply large numbers using the lattice (grid) method.

Long Multiplication Calculator

Multiply numbers step-by-step using the long multiplication method.

Multiplication Tables Practice

Practice and drill multiplication tables interactively.

Decimal to Percent Calculator

Convert a decimal number to a percentage.

Fraction Calculator

Add, subtract, multiply, and divide fractions.

Fraction to Percent Calculator

Convert a fraction to its percentage equivalent.

Mixed Number to Percent Calculator

Convert a mixed number (e.g. 1½) to a percentage.

Percent Error Calculator

Calculate the percentage error between an estimated and actual value.

Percent Off Calculator

Calculate the final price after a percentage discount.

Percent to Decimal Calculator

Convert a percentage to its decimal equivalent.

Percent to Fraction Calculator

Convert a percentage to a simplified fraction.

Percentage Calculator

Calculate percentages: find X% of Y, what % X is of Y, or the % change between two values.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values.

Percentage Decrease Calculator

Calculate the percentage decrease from one value to another.

Percentage Difference Calculator

Calculate the percentage difference between two values.

Percentage Increase Calculator

Calculate the percentage increase from one value to another.

Vote Percentage Calculator

Calculate what percentage of total votes each candidate received.

Least Common Multiple Calculator

Find the least common multiple (LCM) of two or more numbers.

Multiples Calculator

List the multiples of any number.

Round to Nearest Multiple

Round a number up or down to the nearest multiple of any value.

Average Calculator

Calculate the arithmetic mean (average) of a set of numbers.

Percentile Calculator

Find the percentile rank of a value within a data set.