All CalcSolver Tools

Open a calculator and type your numbers. The answer updates as you type, on your device, with no account. For the formula and a worked example, use the lesson library.

Everyday Math

• %PercentagePart of a number, change, and ratiosOpen tool
• %TipTip, tax, and a split billOpen tool
• %DiscountSale price, original price, stacked discountsOpen tool
• ≈RoundingPlaces, significant figures, or a multipleOpen tool
• ↔Unit ConverterLength, weight, temperature, volume, and timeOpen tool
• ¾Fraction CalculatorAdd, subtract, multiply, and divideOpen tool
• ½Fraction SimplifierReduce a fraction to lowest termsOpen tool
• .5Decimal to FractionTerminating, repeating, or back to a decimalOpen tool
• 10ⁿScientific NotationDecimal, ×10ⁿ, and E formatOpen tool
• ×Times TablesOne table, the chart, or practiceOpen tool
• ÷Long DivisionRemainder, decimal, and mixed formOpen tool

Algebra And Geometry

• x²Quadratic SolverBoth roots of ax² + bx + c = 0Open tool
• =Equation SolverLinear, quadratic, and a 2×2 systemOpen tool
• xAlgebraEvaluate, solve ax + b = c, or factorOpen tool
• ÷FactorsAll factors, primes, and pairsOpen tool
• LLCMLeast common multiple of whole numbersOpen tool
• GGCFGreatest common factor of whole numbersOpen tool
• mSlopeTwo points, a line, or percent gradeOpen tool
• yGraphingGraph, table, and interceptsOpen tool
• []Matrix2×2 add, multiply, and inverseOpen tool
• a²+b²Pythagorean TheoremThe missing side of a right triangleOpen tool
• △TriangleMissing side, area, and the third angleOpen tool
• AAreaShapes, rooms, and wall areaOpen tool
• σStatisticsMean, median, mode, and spreadOpen tool
• x̄Mean, Median, ModeThe center of a list of numbersOpen tool
• sStandard DeviationSample and population spreadOpen tool
• PProbabilityTwo events, trials, and the complementOpen tool
• zZ-ScoreA value, a percentile, or two scoresOpen tool

School And Health

• 4.0GPAA credit-weighted 4.0 average across classesOpen tool
• %GradeOne class: weights, the final, or a test scoreOpen tool
• yrsAgeAge on a date and days until a birthdayOpen tool
• XIIRoman NumeralsNumbers, years, and a chartOpen tool
• logLogarithmCommon log, natural log, and any baseOpen tool
• aⁿExponentPowers, eˣ, and a missing exponentOpen tool
• √Square RootSquare root, simplified radical, nth rootOpen tool
• kg/m²BMIBody mass index from height and weightOpen tool

Calculus

• dyDerivativePolynomial, at a point, and second derivativeOpen tool
• ∫IntegralAntiderivative and a definite integralOpen tool
• limLimitSubstitution, both sides, and a tableOpen tool

Money

• $Compound InterestSee how savings grow over timeOpen tool
• ISimple InterestInterest, the rate, or the principalOpen tool

This page is only the calculators. The written lessons, with the formula and a worked example, are in the guide library.