Math & Science Calculators ๐Ÿ”ฌ

54 free math calculators with step-by-step solutions โ€” from everyday percentages and discounts to algebra, geometry, logic, and advanced special functions.

54 Calculators
Most popular
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Percentage Calculator
Three modes โ€” X% of Y, what % is X of Y, find the original
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Quadratic Equation Calculator
Solve axยฒ + bx + c = 0 with roots, vertex, and graph
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Tip Calculator
Tip amount, total bill, and per-person split
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FOIL Calculator
Multiply two binomials with full step-by-step work shown
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Discount Calculator
Sale price and total savings after any percentage discount
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Factoring Trinomials Calculator
Factor axยฒ + bx + c using the AC method with full steps

Percentages

17 tools
Percentage Calculatorโ€”Three modes: X% of Y, what % is X of Y, or find the original numberโ†’ Percentage Change Calculatorโ€”Percentage increase or decrease between any two valuesโ†’ Percentage Decrease Calculatorโ€”Calculate how much a value decreased in percentage termsโ†’ Percentage Difference Calculatorโ€”Find the percentage difference between two numbersโ†’ Percentage Error Calculatorโ€”Calculate error between measured and actual valuesโ†’ Percentage Increase Calculatorโ€”Calculate how much a value increased in percentage termsโ†’ Percentage of Percentage Calculatorโ€”Calculate a percentage of a percentage valueโ†’ Percentage Point Calculatorโ€”Distinguish between percentage points and percentage changeโ†’ Percent to Goal Calculatorโ€”Track progress toward a target or goalโ†’ Average Percentage Calculatorโ€”Calculate the average of multiple percentagesโ†’ Decimal to Percent Calculatorโ€”Convert decimal numbers to percentagesโ†’ Fraction to Percent Calculatorโ€”Convert fractions to percentage valuesโ†’ Time Percentage Calculatorโ€”Calculate time elapsed as a percentage of totalโ†’ Discount Calculatorโ€”Final price after applying percentage discountโ†’ Sales Tax Calculatorโ€”Calculate total cost including sales taxโ†’ Tip Calculatorโ€”Tip amount, total, and split between multiple peopleโ†’ Relative Change Calculatorโ€”Relative change as a decimal or percentageโ†’

Algebra & Equations

30 tools
Quadratic Equation Calculatorโ€”Solve axยฒ + bx + c = 0 with complete solutions and graphโ†’ System of Equations Calculatorโ€”Solve 2x2 and 3x3 systems using substitution or eliminationโ†’ Cubic Equation Calculatorโ€”Solve axยณ + bxยฒ + cx + d = 0 with all real and complex rootsโ†’ Absolute Value Equation Calculatorโ€”Solve equations containing absolute value expressionsโ†’ Absolute Value Inequalities Calculatorโ€”Solve inequalities with absolute value notationโ†’ Factoring Trinomials Calculatorโ€”Factor axยฒ + bx + c using the AC method step-by-stepโ†’ Completing the Square Calculatorโ€”Convert quadratic equations to vertex formโ†’ Discriminant Calculatorโ€”Find bยฒ - 4ac to determine nature of quadratic rootsโ†’ FOIL Calculatorโ€”Multiply two binomials using First-Outer-Inner-Last methodโ†’ Multiplying Binomials Calculatorโ€”Multiply (ax + b)(cx + d) with detailed stepsโ†’ Square of Binomial Calculatorโ€”Expand (a + b)ยฒ and (a - b)ยฒ expressionsโ†’ Perfect Square Trinomial Calculatorโ€”Check if a trinomial is a perfect square and factor itโ†’ Multiplying Polynomials Calculatorโ€”Multiply polynomials of any degree with full workโ†’ Adding & Subtracting Polynomials Calculatorโ€”Combine polynomials by adding or subtracting like termsโ†’ Polynomial Division Calculatorโ€”Divide polynomials using long division methodโ†’ Synthetic Division Calculatorโ€”Fast polynomial division by (x - c) with remainderโ†’ Partial Fraction Decomposition Calculatorโ€”Break rational functions into simpler fractionsโ†’ Rational Zeros Calculatorโ€”Find all possible rational roots using Rational Root Theoremโ†’ Descartes' Rule of Signs Calculatorโ€”Determine possible number of positive and negative rootsโ†’ Substitution Method Calculatorโ€”Solve systems of equations by substitutionโ†’ Elimination Method Calculatorโ€”Solve systems by eliminating variablesโ†’ Box Method Calculatorโ€”Multiply polynomials using the box/grid methodโ†’ Generic Rectangle Calculatorโ€”Factor quadratics using the area modelโ†’ Diamond Problem Calculatorโ€”Find two numbers that multiply to X and add to Yโ†’ Direct Variation Calculatorโ€”Solve y = kx proportional relationshipsโ†’ Inverse Variation Calculatorโ€”Solve y = k/x inverse proportionsโ†’ Graphing Inequalities Calculatorโ€”Graph linear inequalities on coordinate planeโ†’ Graphing Quadratic Inequalities Calculatorโ€”Graph parabolic inequalities with shaded regionsโ†’ Inequality to Interval Notation Calculatorโ€”Convert inequalities to interval notation formatโ†’ Interval Notation Calculatorโ€”Work with and convert interval notationโ†’

Complex Numbers & Special Functions

8 tools
Complex Number Calculatorโ€”Add, subtract, multiply, and divide complex numbersโ†’ Complex Conjugate Calculatorโ€”Find the complex conjugate of a + biโ†’ Complex Root Calculatorโ€”Find nth roots of complex numbersโ†’ Gamma Function Calculatorโ€”Calculate ฮ“(n) for factorial generalizationโ†’ Bessel Function Calculatorโ€”Calculate Bessel functions of the first and second kindโ†’ Error Function Calculatorโ€”Calculate erf(x) and erfc(x) for probabilityโ†’ Hyperbolic Functions Calculatorโ€”Calculate sinh, cosh, tanh and their inversesโ†’ Binomial Coefficient Calculatorโ€”Calculate nCr and nPr for combinations and permutationsโ†’

Logic & Set Theory

4 tools
Truth Table Generatorโ€”Generate truth tables for logical expressionsโ†’ Power Set Calculatorโ€”Find all subsets of a given setโ†’ Subset Calculatorโ€”Check if one set is a subset of anotherโ†’ Union & Intersection Calculatorโ€”Find union, intersection, and difference of setsโ†’

Other Math Tools

5 tools
Scientific Calculatorโ€”Full-featured calculator with trig, log, and exponential functionsโ†’ Scientific Notation Calculatorโ€”Convert to and from scientific notation formatโ†’ Triangle Calculatorโ€”Solve triangles given sides and angles (SSS, SAS, ASA, AAS)โ†’ Doubling Time Calculatorโ€”Calculate time for exponential growth to doubleโ†’ Quaternion Calculatorโ€”Perform operations on 4D quaternion numbersโ†’
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