- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Rectangular Prism Space Diagonal CalculatorFind the space diagonal of a rectangular prism (cuboid) from its length, width and height using d = √(l² + w² + h²). Free, instant.
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Rectangular Tank Volume in Liters CalculatorCalculate the volume of a rectangular tank in liters from its length, width, and height in centimeters. Also shows cubic cm and US gallons.
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Grass Seed for a Rectangular Lawn CalculatorCalculate how much grass seed you need for a rectangular lawn from its length, width, and seeding rate. Get the amount in grams and kilograms.
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Rectangle Square Feet to Square Meters CalculatorConvert a rectangle's dimensions in feet to area in square meters. Enter length and width to get instant ft² and m² results with the 0.092903 factor.
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Rectangle Square Meters to Square Feet CalculatorConvert a rectangle's area from square meters to square feet. Enter length and width in meters to get the total area in ft² instantly.
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Right Triangle Legs from Hypotenuse and Angle CalculatorFind both legs of a right triangle from the hypotenuse and an acute angle. Computes opposite = c·sinθ and adjacent = c·cosθ instantly.
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Law of Cosines Calculator (Side c)Find the third side c of any triangle using the Law of Cosines: c = √(a² + b² − 2ab·cos C). Enter two sides and the included angle in degrees.
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Square Perimeter from Area CalculatorFind the perimeter of a square from its area using P = 4√A. Enter the area to instantly get the side length and perimeter. Free and accurate.
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Triangle Perimeter & Semiperimeter CalculatorCalculate the perimeter and semiperimeter of a triangle from its three sides, with a Heron's formula area check and triangle inequality validation.
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Countertop Square Footage CalculatorCalculate countertop square footage by adding up each section's length × width. Includes waste overage, square meters, and total square inches.
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Perimeter of a Pentagon CalculatorCalculate the perimeter of a regular pentagon instantly with P = 5s. Enter one side length and get the total distance around all five sides.
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Perimeter of a Circle CalculatorCalculate the perimeter (circumference) of a circle from its radius using P = 2πr. Also shows diameter and area. Fast, free and accurate.
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Guntha to Square Feet CalculatorConvert Guntha to square feet instantly. 1 Guntha = 1,089 ft². A traditional Indian land-area unit used in Maharashtra, Karnataka & beyond.
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Kanal to Square Feet CalculatorConvert Kanal to square feet (ft²) instantly. 1 Kanal = 5,445 sq ft, the standard land unit used in Pakistan and northern India. Also shows yd² and m².
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Hemisphere Surface Area CalculatorCalculate the total surface area of a hemisphere (3πr²) plus its curved and flat-base areas from the radius. Fast, accurate, and free.
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Teaspoons to Milliliters ConverterConvert teaspoons (tsp) to milliliters (mL) instantly. Uses the US teaspoon factor 1 tsp = 4.92892159 mL for accurate cooking and dosing conversions.
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Tablespoons to Milliliters ConverterConvert tablespoons (tbsp) to milliliters (mL) instantly. Uses the US tablespoon = 14.7867648 mL standard. Fast, accurate cooking and recipe conversions.
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Cubic Yards to Cubic Meters CalculatorConvert cubic yards to cubic meters instantly. Enter yd³ to get m³ using the exact factor 1 yd³ = 0.764554858 m³. Fast, accurate volume converter.
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Cubic Meters to Cubic Yards CalculatorConvert cubic meters (m³) to cubic yards (yd³) instantly. Enter any volume in m³ and get the exact yd³ result using the 1.307950619 factor.
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Surface Area of a Cylinder CalculatorCalculate the total surface area of a cylinder from its radius and height using A = 2πr² + 2πrh. Free, instant, with lateral and base areas shown.
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Volume of a Cube CalculatorCalculate the volume of a cube instantly with V = a³. Enter the side length to get volume, surface area, and space diagonal in any units.
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Surface Area of a Sphere CalculatorCalculate the surface area of a sphere instantly with A = 4πr². Enter the radius to get surface area, diameter, and volume. Free and easy to use.
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Slope of a Line from Two Points CalculatorFind the slope (m) of a line through two points using m = (y₂ − y₁) / (x₂ − x₁). Also returns rise, run, y-intercept and angle of incline.
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Volume of a Sphere CalculatorCalculate the volume of a sphere from its radius using V = (4/3)·π·r³. Also returns diameter and surface area instantly.
