- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Aquarium Volume CalculatorCalculate your fish tank volume in US gallons and liters from length, width, and height in inches. Free, instant aquarium capacity calculator.
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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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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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Rectangular Concrete Slab Volume CalculatorCalculate how many cubic yards of concrete you need for a rectangular slab from its length, width, and thickness. Fast, accurate, and free.
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Rectangular Pool Volume CalculatorCalculate how many gallons of water your rectangular pool holds. Enter length, width, and average depth in feet to get the volume instantly.
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Rectangle Gravel/Mulch Volume CalculatorCalculate how many cubic yards of gravel, mulch, sand or topsoil you need to fill a rectangular area at a given depth. Enter length, width and depth.
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Circle to Cylinder Volume CalculatorTurn a circle's radius and a height into a cylinder volume instantly with V = πr²h. Free calculator showing circle area and total cubic volume.
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Gallons of Water in Pool CalculatorCalculate how many gallons of water fill your swimming pool. Enter length, width, and average depth in feet for an instant US gallon estimate.
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Square Feet to Cubic Feet CalculatorConvert square feet to cubic feet instantly. Enter floor area and depth/height to get volume in ft³ (and cubic yards) for concrete, mulch, soil and more.
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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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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 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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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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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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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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Pool Water Volume CalculatorCalculate swimming pool water volume in gallons and liters from length, width, and average depth in feet or meters. Fast, accurate, and free.
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Propane Tank Volume CalculatorCalculate propane tank water capacity and usable gallons from diameter and length. Capsule-shape volume with adjustable fill percentage (default 80%).
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Prism Volume Calculator (Any Cross-Section)Calculate the volume of any prism from its cross-section area and length. Works for triangular, hexagonal, irregular and all uniform prisms.
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Vertical Cylindrical Tank Volume CalculatorCalculate total and filled volume of a vertical cylindrical tank from diameter, height and liquid level. Get m³, litres and fill percentage instantly.
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Oval Pool Water Volume CalculatorCalculate the water volume of an oval or ellipse swimming pool in US gallons, cubic feet and liters from length, width and depth.
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Cone Frustum Volume Calculator (Diameters)Calculate the volume of a conical frustum (truncated cone) from its bottom diameter, top diameter, and height using V = (π·h/12)(D²+Dd+d²).
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Gallons to Liters ConverterConvert gallons to liters instantly. Supports US gallons (3.785411784 L) and UK/Imperial gallons (4.54609 L) with exact conversion factors.
