Whether you're filling a tank, estimating materials for a pour, or tackling a geometry assignment, the right shape calculator is here. The Sphere Volume Calculator, Cylinder Volume Calculator, and Rectangular Tank Volume Calculator cover everyday needs, while the Pyramid Volume Calculator and Tube Volume Calculator handle less-standard forms.
Browse the most-popular list or open the Trending tab to see what other visitors are working on. Every calculator is free, needs no account, and works on any device.
- Volume Calculator
- Area Calculator
- Perimeter Calculator
- Surface Area Calculator
- Circle Calculator
- Rectangle Calculator
- Triangle Calculator
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Suitcase / Luggage Volume CalculatorCalculate suitcase and luggage volume in litres from length, width and height, plus the linear (L+W+H) dimension airlines use for size limits.
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Bucket Volume CalculatorCalculate the volume of a tapered bucket from its top diameter, bottom diameter and height. Get results in liters, US gallons and UK gallons instantly.
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Box Volume CalculatorCalculate the volume of a rectangular box from length, width and height. Get results in cubic inches, cubic feet, liters and US gallons instantly.
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Tank Volume CalculatorCalculate the volume and capacity of horizontal or vertical cylindrical tanks in cubic meters, liters, and US gallons from diameter and length.
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Volume Conversion CalculatorConvert volume between liters, milliliters, US gallons, quarts, pints, cups, and fluid ounces instantly. Uses US customary units for liquid measures.
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Water Weight CalculatorCalculate the weight of water from any volume. Convert gallons, liters, mL or fluid ounces into pounds, kilograms, grams and ounces instantly.
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Trench Volume CalculatorCalculate trench excavation volume in cubic yards, cubic feet and cubic meters from length, width and depth. Free, fast and accurate.
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Water Tank Volume CalculatorCalculate water tank capacity in liters, US & UK gallons, and cubic meters. Works for cylindrical and rectangular tanks using simple dimensions.
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Rectangular Pool Gallons CalculatorCalculate how many gallons of water your rectangular swimming pool holds using length, width, and average depth. Free, instant pool volume calculator.
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Paver Sand CalculatorCalculate how much bedding sand you need for a paver patio or walkway. Enter area and sand depth to get cubic yards, cubic feet, and weight.
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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.
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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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Pyramid Volume CalculatorEnter base length, base width, and height to calculate a right rectangular pyramid’s volume, plus base area and total surface area in seconds.
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Swimming Pool Gallons Calculator for Any Shape (Surface Area × Depth)Estimate the water volume in gallons of a kidney-shaped or irregular swimming pool from its surface area and average depth. Free and instant.
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Conical Frustum Volume CalculatorCalculate the volume of a conical frustum with this Conical Frustum Volume Calculator. Input top radius, bottom radius, and height for accurate results. Ideal for geometry and engineering applications.
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Hemisphere Volume CalculatorCalculate hemisphere volume easily with this free online tool. Input the radius to instantly determine the volume of a hemisphere. Accurate results for spherical segments.
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Acre-Feet to Gallons CalculatorConvert acre-feet to US gallons instantly. Enter acre-feet and get the exact gallon volume using 1 acre-foot = 325,851 gallons.
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Cubic Feet Calculator (Volume & Cost for Multiple 3D Shapes)Calculate volume in cubic feet for boxes, rooms, tanks, cylinders, spheres and more. Convert to cubic inches, yards, meters, gallons, liters and total cost.
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Pool Volume CalculatorCalculate the volume of a rectangular swimming pool in US gallons from length, width, and depth. Includes liters, surface area, and average depth.
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Concrete Slab CalculatorCalculate concrete needed for a slab in cubic yards and cubic feet, plus how many 40, 50, 60 or 80 lb bags to buy. Free estimator.
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Liters to Gallons ConverterConvert liters to gallons instantly. Get both US liquid gallons and UK imperial gallons from any volume in liters, with the exact formula shown.
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Paint Volume & Coverage CalculatorCalculate how many gallons of paint you need based on wall area, number of coats, and coverage per gallon. Free, fast paint estimator.
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Engine Displacement Volume CalculatorCalculate total engine displacement from bore, stroke and cylinder count. Get results in cc, liters and cubic inches instantly with this free tool.
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Weight to Volume CalculatorConvert weight (mass) to volume using density. Enter grams, kg, lb or oz plus density to get volume in mL, liters and cm³ instantly.
Frequently asked questions
What kinds of volume problems can I solve here?
This collection covers all the common 3-D shapes — spheres, cylinders, pyramids, cubes, rectangular solids, and tanks, among others. Whether you need the capacity of a water tank, the volume of a shipping container, or a geometric solid for a coursework problem, there is a dedicated calculator ready to use.
How accurate are the volume results?
Every calculator uses the standard geometric formula for its shape, tested against known reference values. Results are reliable for most everyday uses, but for construction, manufacturing, or any safety-critical work, verify your figures against the governing standard and have a qualified engineer review the calculations.
Is there a fee, or do I need an account?
No fee and no account — all volume calculators are completely free. Just open the tool, enter your measurements, and get your result instantly. No registration or subscription is required at any point.
Does the site save or share the measurements I enter?
Nothing you enter is stored or transmitted. All calculations run entirely in your browser, so your measurements stay on your device and are never sent to any server or shared with third parties.
Which volume calculators are the most popular?
The list on this page is sorted by actual visitor usage, so the most-used tools appear first. Open the Trending tab to see what is active right now, or check Recently Added for the newest tools in the collection.
