Geometry, Shape, Area & Volume Calculators

Areas, volumes, perimeters and shape geometry.

52 tools · 100% Free · Works Offline

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Rectangle Area CalculatorCalculate the area and perimeter of a rectangle from length and width in any unit, free and…

Triangle Area CalculatorCalculate triangle area from base and height or from three side lengths using Heron's formula,…

Circle Area CalculatorCalculate the area and circumference of a circle from its radius or diameter instantly, free in…

Cube Volume CalculatorCalculate the volume and surface area of a cube from its side length in any unit, free and…

All Geometry, Shape, Area & Volume Calculators (52)

Guide to Geometry Calculators

These tools cover the geometry a student, tradesperson or site engineer actually reaches for: flat-shape areas and perimeters, 3D solid volumes and surface areas, circle and sector geometry, coordinate maths, and earthworks-style bulk volumes. The tricky part is matching the shape you have to the tool that expects it, since a "tank" may be a cylinder, capsule or ellipsoid, and a stockpile or excavation rarely matches a clean textbook solid.

Flat shapes: area and perimeter

Use these for floors, walls, land parcels and any 2D layout; pick the perimeter tools when you need edging, skirting or fencing rather than fill.

Rectangle Area Calculator Triangle Area Calculator Trapezoid Area Calculator Parallelogram Area Calculator Regular Polygon Area Calculator Rectangle Perimeter Calculator Triangle Perimeter Calculator

Circles, arcs and sectors

Start from whichever measurement you actually have — radius, diameter or circumference — then use sector and arc tools for pie-slice areas and curved edge lengths.

Circle Area Calculator Circle from Diameter Calculator Circumference Calculator Annulus Area Calculator Sector Area Calculator Arc Length Calculator

3D solids: volume and surface area

Use the volume tools to size capacity and the surface-area tools to estimate paint, cladding or sheet material for the same solid.

Cube Volume Calculator Rectangular Prism Volume Calculator Cylinder Volume Calculator Sphere Volume Calculator Cone Volume Calculator Cylinder Surface Area Calculator Sphere Surface Area Calculator Cone Surface Area Calculator

Tanks, stockpiles and containers

Match the real object to its nearest solid: a capsule for round-ended tanks, an ellipsoid or hemisphere for domed ends, and the stockpile estimators for irregular piled material.

Tank Volume Calculator Capsule Volume Calculator Ellipsoid Volume Calculator Hemisphere Volume Calculator Stockpile Shape Volume Calculator Irregular Stockpile Volume Estimator Mound Volume Calculator Bin and Hopper Volume Calculator

Earthworks and cut/fill volumes

For excavations and embankments, use the pit, trench and batter tools for defined shapes and the average-end-area method when you have cross-sections along a run.

Pit Volume from Dimensions Calculator Trench Volume Calculator Embankment Volume Calculator Batter Slope Volume Calculator Average End Area Volume Calculator Frustum Volume Calculator

Coordinate and triangle geometry

Use these when you have points or lines rather than a shape — distances, midpoints, slope and gradient, plus right-triangle and Pythagorean checks for setting out.

Distance Between Points Calculator Midpoint Calculator Slope Calculator Slope Intercept Form Calculator 3D Distance Calculator Pythagorean Theorem Calculator Right Triangle Calculator

Important calculation notice

These calculators are intended for education, estimation and preliminary checks. Verify all inputs, units, assumptions, material properties and applicable standards. Safety-critical or final engineering designs should be checked by a suitably qualified professional.

Related calculator categories

Maths, Education & Science Units, Measurement & Converters Civil Construction, Building Materials & Trades Surveying, Coordinates, GIS & CAD Mining, Quarry, Earthworks, Drill & Blast Structural, Materials, Mechanical & Workshop

Geometry, Shape, Area & Volume Calculators

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Popular Calculators

All Geometry, Shape, Area & Volume Calculators (52)

Area & 2D Shapes17 calculators

Circles4 calculators

Volume & Surface Area12 calculators

Earthworks, Stockpile & Tank Volumes12 calculators

Coordinate Geometry5 calculators

Triangles & Trigonometry2 calculators

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