- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Square Miles to Square Kilometers ConverterConvert square miles to square kilometers instantly. Enter any area in mi² to get km² using the exact factor 1 mi² = 2.589988 km².
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Square Yards to Square Meters ConverterConvert square yards to square meters instantly. Enter any area in yd² and get the exact result in m² using the factor 0.83612736.
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Cylinder Lateral Surface Area CalculatorCalculate the lateral (curved) surface area of an open cylinder using A = 2πrh. Enter radius and height for instant results in square units.
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Square Meters to Square Centimeters ConverterConvert square meters (m²) to square centimeters (cm²) instantly. Multiply by 10,000 to get cm². Fast, accurate area unit conversion.
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Dilution Volume CalculatorCalculate the stock volume needed for a dilution using C1V1 = C2V2. Enter stock and final concentrations plus final volume to get V1 and solvent.
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Cubic Meters to Liters CalculatorConvert cubic meters (m³) to liters (L) instantly. Enter any volume and get the exact result using L = m³ × 1000. Fast, free and accurate.
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Cups to Grams CalculatorConvert cups to grams for any ingredient using density. Pick flour, sugar, butter, water and more, or enter a custom g/mL value. Free and instant.
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Milliliters to Grams CalculatorConvert milliliters (mL) to grams (g) using density. Enter volume and density or pick a preset (water, milk, oil, flour, sugar, honey) for instant results.
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Density Calculator (Mass and Volume)Calculate density from mass and volume with ρ = m/V. Supports grams, kilograms, cm³, mL, liters and m³. Get results in g/cm³ and kg/m³ instantly.
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Cubic Inches to Gallons CalculatorConvert cubic inches (in³) to US liquid gallons instantly. Enter a volume and get gallons using the exact factor: 1 gallon = 231 in³.
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Cubic Feet to Gallons CalculatorConvert cubic feet (ft³) to US liquid gallons instantly. Enter a volume in cubic feet and get the equivalent gallons using gal = ft³ × 7.48052.
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Liters to Cubic Meters CalculatorConvert liters to cubic meters instantly. Enter a volume in L and get the exact m³ value using the formula m³ = L ÷ 1000.
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Floor Area CalculatorCalculate floor area and square footage instantly. Enter length and width to get area in square feet, square meters, and square yards.
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Swimming Pool Surface Area CalculatorCalculate the water surface area of a rectangular swimming pool from its length and width. Get results in square feet and square meters instantly.
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Triangular Pyramid (Tetrahedron) Surface Area CalculatorCalculate the surface area of a triangular pyramid (tetrahedron) from base edge and slant height. Free, instant SA = (√3/4)·a² + (3/2)·a·l calculator.
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Curved Surface Area of a Cylinder CalculatorCalculate the curved (lateral) surface area of a cylinder instantly using CSA = 2πrh. Enter the radius and height to get the result in square units.
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Volume of a Rectangular Prism CalculatorCalculate the volume of a rectangular prism (box) instantly with V = l × w × h. Also computes total surface area. Free, fast, and accurate.
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Area of a Trapezoid CalculatorCalculate the area of a trapezoid instantly from its two parallel bases and height using A = ½(b₁ + b₂)·h. Free, fast, and accurate.
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Circumference of a Circle CalculatorCalculate the circumference of a circle from radius or diameter using C = 2πr = πd. Get circumference, diameter, and area instantly with worked examples.
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Volume of a Cone CalculatorCalculate the volume of a cone instantly from its radius and height using V = (1/3)πr²h. Free, accurate cone volume calculator with worked example.
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Number of Diagonals of a Polygon CalculatorFind how many diagonals a polygon has from its number of sides using D = n(n−3)/2. Fast, free, and works for any polygon with 3 or more sides.
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Surface Area of a Cube CalculatorCalculate the total surface area of a cube from its edge length using SA = 6s². Also shows the area of one face and the cube's volume.
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3D Distance CalculatorCalculate the straight-line distance between two points in 3D space using their (x, y, z) coordinates with the 3D Euclidean distance formula.
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Cosine of an Angle CalculatorCalculate the cosine of an angle in a right triangle from the adjacent side and hypotenuse, plus the angle θ in degrees and radians.
