Calculators

Geometry Calculator

Calculate area, perimeter, volume, and other properties of geometric shapes

Select a Shape:

Square

Rectangle

Triangle

Circle

Sphere

Cylinder

Cone

Cube

◼️

Side Length (a):

Square Formulas

Area = a²

Perimeter = 4a

Diagonal = a√2

▭

Length (l):

Width (w):

Rectangle Formulas

Area = l × w

Perimeter = 2(l + w)

Diagonal = √(l² + w²)

▲

Base (b):

Height (h):

Side 1 (a):

Side 2 (c):

Triangle Formulas

Area = ½ × b × h

Perimeter = a + b + c

●

Radius (r):

Circle Formulas

Area = πr²

Circumference = 2πr

Diameter = 2r

🔴

Radius (r):

Sphere Formulas

Volume = (4/3)πr³

Surface Area = 4πr²

⛽

Radius (r):

Height (h):

Cylinder Formulas

Volume = πr²h

Surface Area = 2πr(h + r)

🔺

Radius (r):

Height (h):

Cone Formulas

Volume = (1/3)πr²h

Slant Height = √(r² + h²)

Surface Area = πr(r + √(r² + h²))

⬛

Side Length (a):

Cube Formulas

Volume = a³

Surface Area = 6a²

Space Diagonal = a√3

Calculation Results

${area.toFixed(4)}

Perimeter

${perimeter.toFixed(4)}

Diagonal

${diagonal.toFixed(4)}

Side Length

${side.toFixed(4)}

`; showResult('Square Properties', resultHTML); } // Rectangle calculations function calculateRectangle() { const length = parseFloat(document.getElementById('rectangle-length').value); const width = parseFloat(document.getElementById('rectangle-width').value); if (!length || length <= 0 || !width || width <= 0) { showError('Please enter valid positive numbers for length and width.'); return; } const area = length * width; const perimeter = 2 * (length + width); const diagonal = Math.sqrt(length * length + width * width); const resultHTML = `

Area

${area.toFixed(4)}

Perimeter

${perimeter.toFixed(4)}

Diagonal

${diagonal.toFixed(4)}

Length

${length.toFixed(4)}

Width

${width.toFixed(4)}

`; showResult('Rectangle Properties', resultHTML); } // Triangle calculations function calculateTriangle() { const base = parseFloat(document.getElementById('triangle-base').value); const height = parseFloat(document.getElementById('triangle-height').value); const side1 = parseFloat(document.getElementById('triangle-side1').value); const side2 = parseFloat(document.getElementById('triangle-side2').value); if (!base || base <= 0 || !height || height <= 0 || !side1 || side1 <= 0 || !side2 || side2 <= 0) { showError('Please enter valid positive numbers for all triangle dimensions.'); return; } const area = 0.5 * base * height; const perimeter = base + side1 + side2; const resultHTML = `

Area

${area.toFixed(4)}

Perimeter

${perimeter.toFixed(4)}

Base

${base.toFixed(4)}

Height

${height.toFixed(4)}

Side 1

${side1.toFixed(4)}

Side 2

${side2.toFixed(4)}

`; showResult('Triangle Properties', resultHTML); } // Circle calculations function calculateCircle() { const radius = parseFloat(document.getElementById('circle-radius').value); if (!radius || radius <= 0) { showError('Please enter a valid positive number for radius.'); return; } const area = PI * radius * radius; const circumference = 2 * PI * radius; const diameter = 2 * radius; const resultHTML = `

Area

${area.toFixed(4)}

Circumference

${circumference.toFixed(4)}

Diameter

${diameter.toFixed(4)}

Radius

${radius.toFixed(4)}

`; showResult('Circle Properties', resultHTML); } // Sphere calculations function calculateSphere() { const radius = parseFloat(document.getElementById('sphere-radius').value); if (!radius || radius <= 0) { showError('Please enter a valid positive number for radius.'); return; } const volume = (4/3) * PI * Math.pow(radius, 3); const surfaceArea = 4 * PI * Math.pow(radius, 2); const resultHTML = `

Volume

${volume.toFixed(4)}

Surface Area

${surfaceArea.toFixed(4)}

Radius

${radius.toFixed(4)}

`; showResult('Sphere Properties', resultHTML); } // Cylinder calculations function calculateCylinder() { const radius = parseFloat(document.getElementById('cylinder-radius').value); const height = parseFloat(document.getElementById('cylinder-height').value); if (!radius || radius <= 0 || !height || height <= 0) { showError('Please enter valid positive numbers for radius and height.'); return; } const volume = PI * Math.pow(radius, 2) * height; const surfaceArea = 2 * PI * radius * (height + radius); const resultHTML = `

Volume

${volume.toFixed(4)}

Surface Area

${surfaceArea.toFixed(4)}

Radius

${radius.toFixed(4)}

Height

${height.toFixed(4)}

`; showResult('Cylinder Properties', resultHTML); } // Cone calculations function calculateCone() { const radius = parseFloat(document.getElementById('cone-radius').value); const height = parseFloat(document.getElementById('cone-height').value); if (!radius || radius <= 0 || !height || height <= 0) { showError('Please enter valid positive numbers for radius and height.'); return; } const volume = (1/3) * PI * Math.pow(radius, 2) * height; const slantHeight = Math.sqrt(Math.pow(radius, 2) + Math.pow(height, 2)); const surfaceArea = PI * radius * (radius + slantHeight); const resultHTML = `

Volume

${volume.toFixed(4)}

Surface Area

${surfaceArea.toFixed(4)}

Slant Height

${slantHeight.toFixed(4)}

Radius

${radius.toFixed(4)}

Height

${height.toFixed(4)}

`; showResult('Cone Properties', resultHTML); } // Cube calculations function calculateCube() { const side = parseFloat(document.getElementById('cube-side').value); if (!side || side <= 0) { showError('Please enter a valid positive number for side length.'); return; } const volume = Math.pow(side, 3); const surfaceArea = 6 * Math.pow(side, 2); const spaceDiagonal = side * Math.sqrt(3); const resultHTML = `

Volume

${volume.toFixed(4)}

Surface Area

${surfaceArea.toFixed(4)}

Space Diagonal

${spaceDiagonal.toFixed(4)}

Side Length

${side.toFixed(4)}

`; showResult('Cube Properties', resultHTML); }

zaheerpashamd