Math Calculators

Percentages, ratios, equations, geometry, statistics, and number tools.

Calculators in this category

21 calculators available in this section.

Popular calculator clusters

Jump straight to common tasks in this category.

Percentages Averages Fractions Geometry Statistics

%Percentage CalculatorCalculate percentages, percentage change, and percentage of a number.x̄Average CalculatorCalculate average, sum, count, minimum, and maximum from a list of numbers.:Ratio CalculatorSimplify ratios and convert them to decimal form.3Rule of Three CalculatorSolve direct proportion problems using the rule of three.FCFraction CalculatorAdd, subtract, multiply, or divide two fractions and see the simplified result.DTFDecimal to Fraction CalculatorConvert a decimal number into a simplified fraction.FTDFraction to Decimal CalculatorConvert a fraction into decimal form.PCCPercent Change CalculatorCalculate percentage increase or decrease between an old value and a new value.PECPercent Error CalculatorCalculate percent error between an experimental value and an accepted value.MCMedian CalculatorFind the median value from a list of numbers.MCMode CalculatorFind the mode or most common values in a number list.RCRange CalculatorCalculate the range, minimum, and maximum from a number list.SDCStandard Deviation CalculatorCalculate sample or population standard deviation from a list of numbers.PCProbability CalculatorCalculate probability from favorable outcomes and possible outcomes.ECExponent CalculatorRaise a base number to a power.SRCSquare Root CalculatorCalculate the square root of a number.QFCQuadratic Formula CalculatorSolve a quadratic equation using the quadratic formula.SCSlope CalculatorCalculate the slope between two points.TACTriangle Area CalculatorCalculate triangle area from base and height.CACCircle Area CalculatorCalculate circle area from radius or diameter.RACRectangle Area CalculatorCalculate rectangle area and perimeter.

Simple

Clean calculators for everyday tasks.

Formula-based

Tools include formulas and examples where useful.

Mobile-ready

Use the calculators on any device.

Frequently Asked Questions

Are these calculators free?

Yes. Calcroutine calculators are free to use.

Will more calculators be added?

Yes. This category will expand with more practical tools over time.

Can I use these calculators on mobile?

Yes. The layout is responsive for phones, tablets, and desktop screens.