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Math Calculators

Explore 77 free Math calculators with transparent methods, worked examples, stated assumptions, and cited sources.

Math

77 calculators

  1. Percent Off CalculatorCalculate discount savings, price after discount, optional sales tax, and the final checkout total.
  2. Proportion CalculatorSolve any one missing term in A divided by B equals C divided by D and show the completed proportion.
  3. Ratio CalculatorSimplify a multi-term ratio and scale every term from a selected position and target value.
  4. Average CalculatorCalculate arithmetic mean, sum, count, minimum, maximum, and range for a numeric list.
  5. Aspect Ratio CalculatorSimplify an original aspect ratio and calculate a proportional height from width or width from height.
  6. Pythagorean Theorem CalculatorSolve a right triangle’s missing leg or hypotenuse from either two known sides, then calculate area.
  7. Absolute Value CalculatorFind a number’s distance from zero or the absolute distance between two real-number points.
  8. Radical CalculatorFactor an integer radical into an exact simplified form and calculate its approximate principal real root.
  9. Long Division CalculatorDivide two integers and show quotient, remainder, decimal value, identity check, and digit-by-digit steps.
  10. Fraction CalculatorAdd, subtract, multiply, or divide simple or mixed fractions and return exact, mixed, and decimal results.
  11. Binomial Distribution CalculatorCalculate a success-count range probability and summary moments for a binomial random variable.
  12. Mean Absolute Deviation CalculatorCalculate mean absolute deviation about the arithmetic mean for a list of observations.
  13. Dilution Ratio CalculatorCalculate dilution by concentrate-to-diluent parts or by the C₁V₁ = C₂V₂ concentration equation.
  14. Gear Ratio CalculatorCalculate single-stage or compound multi-stage gear ratio and ideal output speed from tooth counts.
  15. Power-to-Weight Ratio CalculatorCalculate power-to-weight ratio in watts per kilogram and horsepower per pound.
  16. Percentage CalculatorFind a percentage of a value, determine what percent one value is of another, or calculate percentage change.
  17. Significant Figures CalculatorCount or round significant figures and apply precision rules to addition, subtraction, multiplication, and division.
  18. P-Value CalculatorCalculate a lower-tail, upper-tail, or two-sided p-value from a z statistic under the standard normal model.
  19. Confidence Interval CalculatorCalculate z or t confidence intervals for a mean, or a Wilson confidence interval for a proportion.
  20. Point–Slope Line Equation CalculatorUse the Point–Slope Line Equation Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  21. Supplementary Angle CalculatorUse the Supplementary Angle Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  22. Scalene Triangle Area CalculatorUse the Scalene Triangle Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  23. Expanded Place-Value Notation CalculatorUse the Expanded Place-Value Notation Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  24. Arc Length CalculatorUse the Arc Length Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  25. Equilateral Triangle CalculatorUse the Equilateral Triangle Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  26. Triangle 30 60 90 CalculatorUse the Triangle 30 60 90 Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  27. Triangle 45 45 90 CalculatorUse the Triangle 45 45 90 Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  28. Scientific Notation CalculatorUse the Scientific Notation Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  29. Straight-Line Slope CalculatorUse the Straight-Line Slope Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  30. Arithmetic Sequence CalculatorUse the Arithmetic Sequence Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  31. Least Common Multiple (LCM) CalculatorUse the Least Common Multiple (LCM) Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  32. Perpendicular Line CalculatorUse the Perpendicular Line Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  33. Natural Logarithm CalculatorUse the Natural Logarithm Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  34. Y-Axis Intercept of a Line CalculatorUse the Y-Axis Intercept of a Line Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  35. Rectangular Prism Surface Area CalculatorUse the Rectangular Prism Surface Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  36. Systems Of Equations CalculatorUse the Systems Of Equations Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  37. Modulo CalculatorUse the Modulo Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  38. Unit Circle CalculatorUse the Unit Circle Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  39. Pythagorean Integer Triple CalculatorUse the Pythagorean Integer Triple Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  40. Greater Less CalculatorUse the Greater Less Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  41. Perimeter CalculatorUse the Perimeter Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  42. Area CalculatorUse the Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  43. Right Triangle Area CalculatorUse the Right Triangle Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  44. Volume CalculatorUse the Volume Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  45. Hexagon CalculatorUse the Hexagon Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  46. Rectangular Prism Volume CalculatorUse the Rectangular Prism Volume Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  47. Percentage Decrease CalculatorUse the Percentage Decrease Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  48. 3D Vector Cross Product CalculatorUse the 3D Vector Cross Product Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  49. Geometric Sequence CalculatorUse the Geometric Sequence Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  50. Statistical Range CalculatorUse the Statistical Range Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  51. SSA Triangle CalculatorUse the SSA Triangle Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  52. Length Width Area Rectangle CalculatorUse the Length Width Area Rectangle Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  53. Sector Area CalculatorUse the Sector Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  54. Isosceles Trapezoid Area CalculatorUse the Isosceles Trapezoid Area Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  55. Line Slope from Rise and Run CalculatorUse the Line Slope from Rise and Run Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  56. Exponential Function CalculatorUse the Exponential Function Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  57. Slope–Intercept Line Equation CalculatorUse the Slope–Intercept Line Equation Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  58. Dungeons & Dragons Dice Roll CalculatorUse the Dungeons & Dragons Dice Roll Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  59. Mixed Number CalculatorUse the Mixed Number Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  60. Cartesian To Polar CalculatorUse the Cartesian To Polar Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  61. Cosh CalculatorUse the Cosh Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  62. Least Common Denominator CalculatorUse the Least Common Denominator Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  63. Special Right Triangles CalculatorUse the Special Right Triangles Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  64. Rounding CalculatorUse the Rounding Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  65. Area Of Sphere CalculatorUse the Area Of Sphere Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  66. Spherical Coordinates CalculatorUse the Spherical Coordinates Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  67. IQR CalculatorUse the IQR Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  68. Trapezoid CalculatorUse the Trapezoid Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  69. Logarithm Change-of-Base CalculatorUse the Logarithm Change-of-Base Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  70. Quantity-per-Unit Rate CalculatorUse the Quantity-per-Unit Rate Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  71. Exponential Growth CalculatorUse the Exponential Growth Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  72. 5 Number Summary CalculatorUse the 5 Number Summary Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  73. Circle Perimeter CalculatorUse the Circle Perimeter Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  74. Sum Of Series CalculatorUse the Sum Of Series Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  75. Circumference CalculatorUse the Circumference Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  76. Distance CalculatorUse the Distance Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.
  77. Secant Function CalculatorUse the Secant Function Calculator for an instant calculation with validated inputs, stated assumptions, and cited sources.