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3633 apps · Showing 1153–1248

Data & Calculators: Math Calculators

Nonnegative Cube and Variable-Degree Roots

Nonnegative Cube and Variable-Degree Roots. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.

Nonnegative Integer Factorial Product

Multiply the positive integers through n, including the empty-product value 0! = 1.

Nonnegative Radical with Variable Degree

Nonnegative Radical with Variable Degree. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.

Number Sequence Calculator

Analyze a sequence for arithmetic or geometric patterns and project its next five terms.

P-value Calculator

Convert a z statistic to left-tailed, right-tailed, and two-tailed normal-distribution p-values.

Parallel Triangle Segment Ratios and Missing Length

No. DB is the remaining part from D to B, and EC is the remaining part from E to C. The full sides are AD+DB and AE+EC.

Percent Error Calculator

Compare an observed value with an accepted value and calculate absolute and signed percent error.

Percentage Calculator

Solve percent-of, percent-ratio, and percentage-change questions with the formula shown.

Percentage of a Percentage & Amount

Combine two successive percentage proportions and calculate the amount remaining after each proportion.

Percentage Points, Relative Change & Common-Base Values

Compare an absolute percentage-point change with relative percent change and corresponding values on a common base.

Permutation and Combination Calculator

Calculate ordered permutations and unordered combinations for n objects chosen r at a time.

Perpendicular Distance from a Point to a Plane

Find shortest distance to a plane given its equation or a normal vector and a point on the plane.

Perpendicular Line Through a Point & Intersection

Find the finite-slope perpendicular through a supplied point and its intersection with the original line.

Planar Segment Midpoint and Missing Endpoint Coordinate

Yes. Each coordinate is the arithmetic mean of the two endpoint coordinates on that axis. A negative position is valid; all axes must use a common coordinate scale.

Polar & Cartesian Coordinates: Choose a Direction

Switch between radius-and-angle inputs and signed x/y inputs while keeping angle units and quadrant conventions explicit.

Polar Radius & Angle to Cartesian Coordinates

Resolve a nonnegative radius and selected angle into Cartesian x and y coordinates.

Polyhedron Vertices, Edges & Faces Relation

Solve the Euler V − E + F = 2 relation for a missing count in an applicable closed polyhedron.

Positive Integer Decimal Digital Root

Find the single-digit result of repeatedly summing decimal digits for a positive integer with up to 60 digits.

Powers of 10 & Reverse Logarithms

Find 10 raised to a real exponent, or recover the exponent from a positive result using a base-10 logarithm.

Powers of 2 & Reverse Logarithms

Find 2 raised to a real exponent, or recover the exponent from a positive result using a base-2 logarithm.

Pressure Angle to Involute Function Value

Evaluate tan(α) − α with the angle converted to radians, for angles from zero up to but excluding a right angle.

Prime Factorization Calculator

Break a whole number into prime factors and show exponential notation.

Principal Arccosine Angle in Nine Units

Principal Arccosine Angle in Nine Units. Find the principal inverse angle or convert a entered angle to its sine/cosine ratio.

Principal Arcsine Angle and Sine Ratio

Principal Arcsine Angle and Sine Ratio. Find the principal inverse angle or convert a entered angle to its sine/cosine ratio.

Principal Inverse Tangent in Degrees and Radians

They are tangent poles and cannot correspond to a finite real input. Principal arctangent returns an angle strictly between these limits; degree, radian and other selectors represent that same branch.

Probability Calculator

Calculate event probability, odds, complements, and independent two-event combinations.

Progress as a Percentage of Goal

Compare a nonnegative amount of progress with a positive target, including results above 100%.

Pythagorean Right-Triangle Sides, Area and Boundary

Calculate pythagorean right-triangle sides, area and boundary with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Pythagorean Theorem Calculator

Find the hypotenuse and other properties of a right triangle from its two legs.

Quadratic Formula Calculator

Solve ax² + bx + c = 0 and report real or complex roots, the discriminant, and vertex.

Quarter-Disk Arc Length and Full Boundary

No. The curved arc is πr/2. The full boundary adds two radii, so P = πr/2 + 2r.

Quarter-Disk Area and Remaining Square Corner

Its endpoints are one radius apart horizontally and vertically. The Pythagorean theorem gives √(r²+r²)=r√2 for an exact 90-degree quarter disk.

Quarter-Disk Chord, Arc, Boundary and Square Remainder

It is the area of the radius-by-radius square outside the quarter disk, r²−πr²/4. It is not the area bounded by the chord and arc.

Raise a Base to a Power and Reverse Inputs

Raise a Base to a Power and Reverse Inputs. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.

Random Number Range Generator

Generate one or more random integers or decimals within an inclusive range.

Ratio Calculator

Simplify a ratio, convert it to fractions and percentages, and scale it to a chosen total.

Rational Powers in Real Arithmetic

Rational Powers in Real Arithmetic. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.

Real Hyperbolic Functions & Principal Inverses

Evaluate sinh, cosh, tanh and their reciprocals, or recover a real argument from an admissible function value.

Real Logarithm with Any Valid Base

Calculate a real logarithm, recover its positive argument, or solve for a valid logarithm base.

Rectangle Area, Boundary Length and Diagonal

Calculate rectangle area, boundary length and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.

Rectangle Diagonal, Opposite-Long-Side Angle and Boundary

It is the right or obtuse angle opposite the longer side, 2asin(l/d). The other diagonal angle is supplementary. A square gives 90 degrees for both.

Rectangle Dimensions to Square Feet

Calculate a rectangular area in square feet from dimensions in feet, inches or metric units.

Rectangle Linear & Area Scale Comparison

Compare original and scaled rectangle dimensions, including the squared relationship between length scale and area scale.

Rectangle Perimeter & Missing Side

Find a rectangle’s missing side from its perimeter and the other side, with independent length-unit selectors.

Rectangle Perimeter from Area and a Known Side

Calculate rectangle perimeter from area and a known side with bidirectional inputs, compatible units and clear geometric assumptions.

Rectangle Perimeter, Area and Ordered Diagonal Measurements

A feasible pair determines two side lengths up to exchange. This workflow chooses the larger as length and the smaller as width. Area cannot exceed half the squared diagonal; equality describes a square.

Rectangle Side Pair from Area and Perimeter: Larger-Side Branch

Calculate rectangle side pair from area and perimeter: larger-side branch with bidirectional inputs, compatible units and clear geometric assumptions.

Rectangle Side Recovered from Diagonal and Width

Calculate rectangle side recovered from diagonal and width with bidirectional inputs, compatible units and clear geometric assumptions.

Rectangle Sides from Area and Perimeter: Smaller-Side Branch

Calculate rectangle sides from area and perimeter: smaller-side branch with bidirectional inputs, compatible units and clear geometric assumptions.

Rectangle Width from Linked Length, Area or Boundary

Direct length/width entries can use either orientation. When only area and perimeter are supplied, the captured quadratic inverse chooses the larger side as length and the smaller side as width.

Rectangular Box Surface Area and Diagonal

Calculate rectangular box surface area and diagonal with converted units, positive geometric inverses and explicit model limits.

Rectangular Box Volume and Space Diagonal

Calculate rectangular box volume and space diagonal with converted units, positive geometric inverses and explicit model limits.

Rectangular Face Area & Unit Conversion

Calculate the area of one rectangular face, or a missing side, with metric and customary area units.

Rectangular Prism Base, Lateral and Six-Face Areas

Rectangular Prism Base, Lateral and Six-Face Areas. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.

Rectangular Prism Faces, Volume and Space Diagonal

Rectangular Prism Faces, Volume and Space Diagonal. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.

Rectangular Prism Volume from Three Perpendicular Edges

Rectangular Prism Volume from Three Perpendicular Edges. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.

Regular Decagon Dimensions & Four Diagonal Lengths

Compute ten-sided regular-polygon measurements, including the four distinct vertex-to-vertex diagonal lengths.

Regular Dodecagon Dimensions & Five Diagonal Lengths

Relate a regular twelve-sided shape’s side, perimeter, area, radii and five distinct diagonal spans.

Regular Heptagon Side, Area, Radii & Angles

Connect side length, perimeter and circle radii for a seven-sided regular shape, with its interior and central angles.

Regular Hexagon Area, Diagonals and Circle Radii

Regular Hexagon Area, Diagonals and Circle Radii. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Regular Hexagonal Pyramid Face Areas and Capacity

Regular Hexagonal Pyramid Face Areas and Capacity. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Regular Octagon Area and Three Diagonal Lengths

Regular Octagon Area and Three Diagonal Lengths. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Regular Pentagon Area, Diagonal, Height and Apothem

Regular Pentagon Area, Diagonal, Height and Apothem. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Regular Polygon Area from Side, Circumradius or Apothem

Regular Polygon Area from Side, Circumradius or Apothem. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Regular Polygon Boundary Length and Equal Side

This workflow assumes equal sides. For an irregular polygon, add the actual side lengths instead of multiplying one side by n.

Regular Polygon Interior and Turning Angles

It is the nonreflex turning angle 360°/n, supplementary to the interior angle. It is not the reflex angle outside the polygon.

Regular Polygon Side Count, Area & Radii

Choose any whole side count of at least three and solve regular-polygon measurements from a side, perimeter, area or radius.

Regular Tetrahedron: Volume, Area & Sphere Radii

Relate an equal-edge tetrahedron’s edge, height, volume, surface area and inscribed sphere measurements.

Right Circular Cone Dimensions, Surface and Capacity

Right Circular Cone Dimensions, Surface and Capacity. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.

Right Cone Height from Radius, Slant or Volume

Calculate right cone height from radius, slant or volume with converted units, positive geometric inverses and explicit model limits.

Right Cone Slant Length, Base Angle and Half-Apex Angle

Calculate right cone slant length, base angle and half-apex angle with converted units, positive geometric inverses and explicit model limits.

Right Rectangular Pyramid Capacity and Two Face Slants

Right Rectangular Pyramid Capacity and Two Face Slants. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Right Square Pyramid Heights, Faces and Volume

Right Square Pyramid Heights, Faces and Volume. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.

Right Trapezoid Area, Slant and Base Inverse Branch

Calculate right trapezoid area, slant and base inverse branch with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Right Triangle Calculator

Solve all sides, acute angles, area, and perimeter from two right-triangle legs.

Right Triangle Missing Measurements with Optional Area and Perimeter

Enter two legs, a leg and the hypotenuse, or a leg and area. Retain editable unit controls and optional area/perimeter measures, with positive right-triangle bounds.

Right-Triangle Angles from Legs, Hypotenuse or Area

Calculate right-triangle angles from legs, hypotenuse or area with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Right-Triangle Missing Side with Acute-Angle Controls

Calculate right-triangle missing side with acute-angle controls with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Right-Triangle Perimeter from Legs or Three Sides

Calculate right-triangle perimeter from legs or three sides with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Right-Triangle Side Ratios, Angles and Area

Calculate right-triangle side ratios, angles and area with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.

Ring and Horn Torus Surface from Inner and Outer Radii

Ring and Horn Torus Surface from Inner and Outer Radii. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.

Rise, Run, Percent Grade & Slope Angle

Convert signed rise and positive horizontal run to slope percentage and angle.

Rolling Coin Spins During One Outside Circuit

The moving center travels a circle with radius equal to the sum of the two coin radii. Dividing that path length by the moving coin circumference gives two self-axis spins for equal coins. This assumes outside rolling without slipping.

Root Calculator

Calculate square, cube, or nth roots, including real odd roots of negative numbers.

Rounding Calculator

Round a number to decimal places or significant figures and compare floor, ceiling, and truncation.

Sample Size Calculator

Estimate a survey sample size from confidence level, margin of error, population, and expected proportion.

Scientific Calculator

Evaluate scientific expressions with powers, roots, trigonometry, logarithms, constants, and factorials.

Scientific Notation Calculator

Convert decimal numbers to normalized scientific and engineering notation.

Segment Endpoint from Midpoint and Known Endpoint

Yes. In that case both endpoints coincide and the segment has zero length. Otherwise subtract the known endpoint from twice the midpoint, independently on each Cartesian axis.

Signed Change Between Two Values

Find the increase or decrease in original units, or recover the starting or ending value from a known change.

Signed Inputs and Nonnegative Modulo Remainders

Calculate the nonnegative residue and the retained alternative signed-remainder conventions for a nonzero divisor.

Signed Proportion Cross Products and Worked Steps

This workflow excludes zero in all four positions. General zero-numerator ratios can be valid, but they can leave an inverse denominator undetermined; those cases are not offered here.

Signed Subtraction & Missing-Value Calculator

Subtract integers or decimals, including negative numbers, or recover either missing input from the difference.

Six Principal Inverse Trigonometric Functions

Select arcsine, arccosine, arctangent, arccotangent, arcsecant or arccosecant and convert its principal angle among supported units.

Slope Calculator

Find slope, distance, midpoint, line equation, and angle from two Cartesian points.

Sphere and Spherical Cap Volumes in Separate Sections

Sphere and Spherical Cap Volumes in Separate Sections. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.