Calculator collection · 7 distinct tools
Geometry Calculators
Solve right triangles, general triangles, circles, rectangles, perimeter, volume and slope from explicit dimensions and formulas.
Geometry tools expose the equation used for the selected shape and reject impossible dimensions, so the result is easier to verify against a drawing or measurement.
Open a real interactive tool instead of landing on a thin keyword page.
Formulas, units and assumptions stay visible beside the result.
Move between genuinely different calculations inside one collection.
Supplier, manufacturer, drawing and standards data remain authoritative where required.
Choose the calculation that matches the job
Each page owns a distinct input/output task. Reciprocal forms stay together when the underlying job is the same.
Calculator
Pythagorean Theorem Calculator — Solve a Leg, Hypotenuse & Area
Solve a right-triangle leg or hypotenuse from two known sides, show the substituted equation, area, perimeter and acute angles, and reject impossible side combinations.
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Triangle Calculator — Sides, Angles, Area & Perimeter
Solve a triangle from three side lengths using Heron’s formula and the law of cosines, with validity checks, angle sum, area, perimeter and triangle-type labels.
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Circle Calculator — Radius, Diameter, Circumference & Area
Start with radius, diameter, circumference or area and solve the other circle measurements with the inverse formula and high-precision π value shown.
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Rectangle Calculator — Area, Perimeter & Diagonal
Calculate rectangle area, perimeter, diagonal, aspect ratio and optional difference between a measured diagonal and the Pythagorean theoretical value.
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Perimeter Calculator — Rectangle, Square, Triangle & Circle
Calculate perimeter or circumference for common shapes from editable dimensions, with the shape-specific formula and area shown as a useful companion measurement.
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Volume Calculator — Box, Cylinder & Sphere
Calculate volume for rectangular boxes, cylinders or spheres with shape-specific inputs, surface-area companion results and cubic-unit outputs.
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Slope Calculator — Rise, Run, Percent, Angle & Ratio
Convert rise and run into decimal slope, percent grade, angle, ratio and straight-line length, with negative rise supported for descending grades.
Open calculatorUseful next calculations
Move to a different formula only when the next question actually changes.
Explore adjacent calculator collections
Cross-cluster links help you move from measurement to project quantity, electrical relationships, math or media planning without flattening everything into one giant list.
Measurement Calculators →
Work with tape-measure dimensions, drawing scales, area and unit conversions.
Construction & DIY Calculators →
Estimate area, concrete and tile quantities with visible assumptions and formulas.
Electrical & Engineering Calculators →
Solve foundational voltage, current, resistance and power relationships without hiding the formulas.
Statistics Calculators →
Paste datasets to calculate descriptive statistics, sample/population spread and weighted averages with the formulas, conventions and row-level working kept visible.
Fraction Calculators →
Work with fractions, decimals, mixed numbers and practical inch fractions with the simplifying steps kept visible.
Screen, Image & Video Calculators →
Plan pixel density, physical screen dimensions, aspect ratios, video bitrate and file size before resizing, converting or compressing media.
Formula first, assumptions visible
MAXScanner keeps editable rates and dimensions next to the result, shows the working where it helps, and avoids turning reciprocal formulas into duplicate pages. For product, electrical or construction decisions, manufacturer data, drawings and applicable standards remain authoritative.