Calculator collection · 8 distinct tools
Geometry Calculators
Solve common 2D area, 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
Area Calculator — Rectangle, Triangle, Circle, Trapezoid & More
Calculate area for rectangle, square, triangle, circle, trapezoid, parallelogram, ellipse and sector shapes with editable units, converted output units and the substituted formula shown.
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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.
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Rectangle Calculator — Area, Perimeter & Diagonal
Calculate rectangle area, perimeter, diagonal and aspect ratio, and compare an optional measured diagonal with the calculated one to check that a layout is square.
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Perimeter Calculator — Rectangle, Square, Triangle & Circle
Calculate the perimeter of a rectangle, square or triangle, or the circumference of a circle, with the substituted working.
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Volume & Cubic Yard Calculator — Shapes, yd³, ft³, m³, Weight & Cost
Calculate box, cylinder, sphere or area-by-depth volume and instantly convert the result to cubic feet, cubic yards and cubic metres, with optional waste, material density, weight and bulk cost.
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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.
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, money, statistics 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 or enter study assumptions to calculate descriptive statistics, spread, correlation, regression, sample size, margin of error and exact combinatorics with formulas and 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.
Money & Business Calculators →
Model debt payoff, debt-to-income ratios, investment fee drag, discounted cash flows, IRR and sales commission with assumptions and working exposed.
Everyday Planning Calculators →
Solve practical planning, weather, science, logistics and engineering jobs with editable assumptions and visible working.
Formula first, assumptions visible
MAXScanner keeps editable rates, units and dimensions next to the result, shows the working where it helps, and avoids turning reciprocal formulas into duplicate pages. Product documents, financial terms, study design, drawings and applicable standards remain authoritative where required.