Everyday math
Use percentage, fraction, average, ratio, square-root, exponent, GCF, or LCM calculators for common number questions.
Math and work calculators
Calculate the answer and see how it works.
Solve common math questions, total work hours and overtime, or estimate a meeting cost. Math pages include the formula and worked steps.
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Calculators
Calculator and live timer
Meeting cost calculator
Estimate a planned meeting or start the live timer and watch the cost update as time passes.
Calculate meeting cost Hours, breaks, and overtimeTime card calculator
Add one or two weeks of work times, subtract breaks, and see hours and estimated pay.
Add work hours MathPercentage calculator
Solve four common percentage questions and learn the formula for each one.
Calculate percentages MathFraction calculator
Calculate and simplify fraction addition, subtraction, multiplication, or division.
Calculate fractions MathAverage calculator
Find the mean, sum, and count for a list of numbers.
Calculate an average MathRatio calculator
Simplify a ratio or find the missing number in a matching ratio.
Calculate ratios MathSquare root calculator
Find a square root and see a simple way to check the answer.
Calculate a square root MathExponent calculator
Raise a number to a power and review the rules for exponents.
Calculate a power MathGCF and LCM calculator
Find the greatest common factor and least common multiple of whole numbers.
Find GCF and LCM MathQuadratic formula solver
Enter a, b, and c to find the answers to a quadratic equation.
Find the answers MathSlope calculator
Find rise, run, and slope between two coordinate points.
Calculate slope MathStandard deviation calculator
See how spread out a list of numbers is.
Check number spreadQuick guide
Find the right calculator
Algebra and statistics
Use the quadratic, slope, or standard-deviation calculator for equations, lines, and data spread.
Time and workplace costs
Use the time-card calculator for shifts and overtime, or the meeting-cost calculator for planned and live costs.
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