Free Apps and ToolsNo Catch, No Subscription
New additions for files, fonts, code, audio, and data. Explore 394 new tools
Browse calculators by topic Finance, everyday life, construction, conversions, and more.
1822 apps · Showing 193–288
Data & Calculators
1822 appsData & Calculators: Math Calculators
Calculator · CalculateRaise a Base to a Power and Reverse InputsRaise a Base to a Power and Reverse Inputs. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.Calculator · CalculateRandom Number Range GeneratorGenerate one or more random integers or decimals within an inclusive range.Calculator · CalculateRatio CalculatorSimplify a ratio, convert it to fractions and percentages, and scale it to a chosen total.Calculator · CalculateRational Powers in Real ArithmeticRational Powers in Real Arithmetic. Evaluate a real power or principal root, with reverse inputs where a unique solution exists.Calculator · CalculateReal Hyperbolic Functions & Principal InversesEvaluate sinh, cosh, tanh and their reciprocals, or recover a real argument from an admissible function value.Calculator · CalculateReal Logarithm with Any Valid BaseCalculate a real logarithm, recover its positive argument, or solve for a valid logarithm base.Calculator · CalculateRectangle Area, Boundary Length and DiagonalCalculate rectangle area, boundary length and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateRectangle Diagonal, Opposite-Long-Side Angle and BoundaryIt 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.Calculator · CalculateRectangle Dimensions to Square FeetCalculate a rectangular area in square feet from dimensions in feet, inches or metric units.Calculator · CalculateRectangle Linear & Area Scale ComparisonCompare original and scaled rectangle dimensions, including the squared relationship between length scale and area scale.Calculator · CalculateRectangle Perimeter & Missing SideFind a rectangle’s missing side from its perimeter and the other side, with independent length-unit selectors.Calculator · CalculateRectangle Perimeter from Area and a Known SideCalculate rectangle perimeter from area and a known side with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateRectangle Perimeter, Area and Ordered Diagonal MeasurementsA 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.Calculator · CalculateRectangle Side Pair from Area and Perimeter: Larger-Side BranchCalculate rectangle side pair from area and perimeter: larger-side branch with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateRectangle Side Recovered from Diagonal and WidthCalculate rectangle side recovered from diagonal and width with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateRectangle Sides from Area and Perimeter: Smaller-Side BranchCalculate rectangle sides from area and perimeter: smaller-side branch with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateRectangle Width from Linked Length, Area or BoundaryDirect 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.Calculator · CalculateRectangular Box Surface Area and DiagonalCalculate rectangular box surface area and diagonal with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateRectangular Box Volume and Space DiagonalCalculate rectangular box volume and space diagonal with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateRectangular Face Area & Unit ConversionCalculate the area of one rectangular face, or a missing side, with metric and customary area units.Calculator · CalculateRectangular Prism Base, Lateral and Six-Face AreasRectangular Prism Base, Lateral and Six-Face Areas. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateRectangular Prism Faces, Volume and Space DiagonalRectangular Prism Faces, Volume and Space Diagonal. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateRectangular Prism Volume from Three Perpendicular EdgesRectangular Prism Volume from Three Perpendicular Edges. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateRegular Decagon Dimensions & Four Diagonal LengthsCompute ten-sided regular-polygon measurements, including the four distinct vertex-to-vertex diagonal lengths.Calculator · CalculateRegular Dodecagon Dimensions & Five Diagonal LengthsRelate a regular twelve-sided shape’s side, perimeter, area, radii and five distinct diagonal spans.Calculator · CalculateRegular Heptagon Side, Area, Radii & AnglesConnect side length, perimeter and circle radii for a seven-sided regular shape, with its interior and central angles.Calculator · CalculateRegular Hexagon Area, Diagonals and Circle RadiiRegular Hexagon Area, Diagonals and Circle Radii. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRegular Hexagonal Pyramid Face Areas and CapacityRegular Hexagonal Pyramid Face Areas and Capacity. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRegular Octagon Area and Three Diagonal LengthsRegular Octagon Area and Three Diagonal Lengths. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRegular Pentagon Area, Diagonal, Height and ApothemRegular Pentagon Area, Diagonal, Height and Apothem. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRegular Polygon Area from Side, Circumradius or ApothemRegular Polygon Area from Side, Circumradius or Apothem. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRegular Polygon Boundary Length and Equal SideThis workflow assumes equal sides. For an irregular polygon, add the actual side lengths instead of multiplying one side by n.Calculator · CalculateRegular Polygon Interior and Turning AnglesIt is the nonreflex turning angle 360°/n, supplementary to the interior angle. It is not the reflex angle outside the polygon.Calculator · CalculateRegular Polygon Side Count, Area & RadiiChoose any whole side count of at least three and solve regular-polygon measurements from a side, perimeter, area or radius.Calculator · CalculateRegular Tetrahedron: Volume, Area & Sphere RadiiRelate an equal-edge tetrahedron’s edge, height, volume, surface area and inscribed sphere measurements.Calculator · CalculateRight Circular Cone Dimensions, Surface and CapacityRight Circular Cone Dimensions, Surface and Capacity. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateRight Cone Height from Radius, Slant or VolumeCalculate right cone height from radius, slant or volume with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateRight Cone Slant Length, Base Angle and Half-Apex AngleCalculate right cone slant length, base angle and half-apex angle with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateRight Rectangular Pyramid Capacity and Two Face SlantsRight Rectangular Pyramid Capacity and Two Face Slants. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRight Square Pyramid Heights, Faces and VolumeRight Square Pyramid Heights, Faces and Volume. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateRight Trapezoid Area, Slant and Base Inverse BranchCalculate right trapezoid area, slant and base inverse branch with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateRight Triangle CalculatorSolve all sides, acute angles, area, and perimeter from two right-triangle legs.Calculator · CalculateRight Triangle Missing Measurements with Optional Area and PerimeterEnter 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.Calculator · CalculateRight-Triangle Angles from Legs, Hypotenuse or AreaCalculate right-triangle angles from legs, hypotenuse or area with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateRight-Triangle Missing Side with Acute-Angle ControlsCalculate right-triangle missing side with acute-angle controls with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateRight-Triangle Perimeter from Legs or Three SidesCalculate right-triangle perimeter from legs or three sides with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateRight-Triangle Side Ratios, Angles and AreaCalculate right-triangle side ratios, angles and area with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateRing and Horn Torus Surface from Inner and Outer RadiiRing and Horn Torus Surface from Inner and Outer Radii. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateRise, Run, Percent Grade & Slope AngleConvert signed rise and positive horizontal run to slope percentage and angle.Calculator · CalculateRolling Coin Spins During One Outside CircuitThe 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.Calculator · CalculateRoot CalculatorCalculate square, cube, or nth roots, including real odd roots of negative numbers.Calculator · CalculateRounding CalculatorRound a number to decimal places or significant figures and compare floor, ceiling, and truncation.Calculator · CalculateSample Size CalculatorEstimate a survey sample size from confidence level, margin of error, population, and expected proportion.Calculator · CalculateScientific CalculatorEvaluate scientific expressions with powers, roots, trigonometry, logarithms, constants, and factorials.Calculator · CalculateScientific Notation CalculatorConvert decimal numbers to normalized scientific and engineering notation.Calculator · CalculateSegment Endpoint from Midpoint and Known EndpointYes. 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.Calculator · CalculateSigned Change Between Two ValuesFind the increase or decrease in original units, or recover the starting or ending value from a known change.Calculator · CalculateSigned Inputs and Nonnegative Modulo RemaindersCalculate the nonnegative residue and the retained alternative signed-remainder conventions for a nonzero divisor.Calculator · CalculateSigned Proportion Cross Products and Worked StepsThis 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.Calculator · CalculateSigned Subtraction & Missing-Value CalculatorSubtract integers or decimals, including negative numbers, or recover either missing input from the difference.Calculator · CalculateSix Principal Inverse Trigonometric FunctionsSelect arcsine, arccosine, arctangent, arccotangent, arcsecant or arccosecant and convert its principal angle among supported units.Calculator · CalculateSlope CalculatorFind slope, distance, midpoint, line equation, and angle from two Cartesian points.Calculator · CalculateSphere and Spherical Cap Volumes in Separate SectionsSphere and Spherical Cap Volumes in Separate Sections. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSphere Radius from Diameter, Surface, Volume or CircumferenceSphere Radius from Diameter, Surface, Volume or Circumference. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSphere Radius, Surface, Volume and Inverse-Length RatioCalculate sphere radius, surface, volume and inverse-length ratio with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateSpherical Surface Area and Size RelationshipsCalculate spherical surface area and size relationships with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateSpiral Length Estimate & One-Turn HelixEstimate a tightly wound planar spiral length, or calculate the length of one uniform helical turn around a cylinder.Calculator · CalculateSquare Area and Positive Side LengthCalculate square area and positive side length with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateSquare Boundary Length and DiagonalCalculate square boundary length and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateSquare Diagonal and Positive Side LengthCalculate square diagonal and positive side length with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateSquare Pyramid Base, Single Face and Closed SurfaceSquare Pyramid Base, Single Face and Closed Surface. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSquare Pyramid Capacity with Optional Surface InputsSquare Pyramid Capacity with Optional Surface Inputs. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSquare Pyramid Height from Seventeen Measurement PairsSquare Pyramid Height from Seventeen Measurement Pairs. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSquare Pyramid Surface, Slants and Positive Inverse RootsSquare Pyramid Surface, Slants and Positive Inverse Roots. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateSquare Side, Area, Perimeter and DiagonalCalculate square side, area, perimeter and diagonal with bidirectional inputs, compatible units and clear geometric assumptions.Calculator · CalculateStandard Deviation CalculatorCalculate population and sample standard deviation, variance, mean, and count for a data set.Calculator · CalculateStatistics CalculatorSummarize a data set with centre, spread, variance, standard deviation, and sorted values.Calculator · CalculateSurface Area CalculatorCalculate total and lateral surface area for common solid shapes.Calculator · CalculateTaylor–Lagrange Remainder Upper BoundEstimate a Taylor-polynomial remainder bound from degree, center, evaluation point and a valid maximum next-derivative magnitude.Calculator · CalculateTrapezoid Midsegment from Parallel BasesCalculate trapezoid midsegment from parallel bases with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateTrapezoidal Prism Side-Wall and Closed Surface AreasTrapezoidal Prism Side-Wall and Closed Surface Areas. Use unit controls and documented positive geometric roots to compare base, lateral and total measures.Calculator · CalculateTrapezoidal Prism Volume from Cross Section and DepthTrapezoidal Prism Volume from Cross Section and Depth. Convert compatible units, recover unknown dimensions and distinguish curved surfaces, bases and total measures.Calculator · CalculateTriangle Angle Weights & Relative Side RatiosConvert three positive angle weights into triangle angles and obtain relative side lengths through the sine rule.Calculator · CalculateTriangle Angles, Heron Area and Boundary from Three SidesNo. This SSS workflow accepts three side lengths and keeps area, perimeter and all three angles as read-only outputs. Other triangle workflows provide different supported inverses.Calculator · CalculateTriangle Area and Perimeter from Cartesian VerticesNo. The absolute determinant removes the orientation sign. Perimeter adds the three point distances. Collinear vertices return zero area, and repeated vertices are allowed as degenerate cases.Calculator · CalculateTriangle Area from Three Sides and Obtuse Inverse BranchCalculate triangle area from three sides and obtuse inverse branch with converted units, positive geometric inverses and explicit model limits.Calculator · CalculateTriangle Area from Two Sides and Included AngleGenerally no. An acute angle and its obtuse supplement have the same sine and triangle area. The backward angle control returns the principal acute or right angle; area cannot exceed ab/2.Calculator · CalculateTriangle Base Recovered from Area and AltitudeCalculate triangle base recovered from area and altitude with retained unit controls, positive geometric roots and explicit inverse-branch assumptions.Calculator · CalculateTriangle CalculatorSolve a triangle from three side lengths, including area, perimeter, angles, and classification.Calculator · CalculateTriangle Circumcircle, Inradius & AreaCalculate a triangle’s circumscribed circle and related geometry from three valid side lengths.Calculator · CalculateTriangle Exterior Angles and Supplementary InteriorsEnter two interiors, or an interior and a nonadjacent exterior. Adjacent interior/exterior angles are dependent supplements. Two exterior inputs populate the third exterior only in this retained solver.Calculator · CalculateTriangle Interior and Exterior Angle RelationshipsNo. Each exterior is the nonreflex supplement of its adjacent interior. Interiors sum to 180 degrees and these exteriors sum to 360 degrees. Enter two interiors or an interior plus a nonadjacent exterior for all fields; two exteriors produce only the third exterior.Calculator · CalculateTriangle Interior Angle Sum and Missing AngleThis tool uses planar Euclidean geometry. Curved-surface triangles can have a different interior angle sum.Calculator · CalculateTriangle Interior Angles: Find the ThirdFind a missing interior angle of a plane triangle in degrees or radians.Calculator · CalculateTriangle Sides and Angles with Cosine-Law Root SelectionNo. An angle, its opposite side and another side can describe two triangles. This workflow uses the captured plus-square-root side branch and rejects nonreal or nonpositive branches. It does not enumerate every alternative.Calculator · CalculateTriangle Sides and Area from Included Side and End AnglesSide a joins the vertices carrying β and γ. It lies opposite the computed angle α. The side lengths follow the sine law, and the area uses the included-angle triangle formula.