Resources

Tank Calculators

Work out tank capacity, gallons at a liquid level, liquid weight and surface area, and convert between common units.

Quick calculators for sizing and planning a storage tank. Results update as you type. All volumes are US gallons. These are straight geometric volumes; a molded tank's dome, cone or sloped bottom changes its true capacity, so use the gallons listed for each tank when you order.

Vertical round tank: capacity, fill level and weight

Diameter (in) Sidewall height (in) Liquid level (in) optional Specific gravity optional, water = 1.0

Horizontal round tank: capacity and fill level

Diameter (in) Length (in) Liquid level (in) optional

Rectangular tank or box: volume and surface area

Height (in) Length (in) Width (in) Liquid level (in) optional

Unit conversions

Type in any box; the others in that row update.

Length

Feet Inches Meters Centimeters Millimeters

Volume

US gallons Liters Cubic feet Cubic meters Imperial gallons

Weight

Pounds Ounces Kilograms Grams

Temperature

Fahrenheit Celsius

Need help sizing a tank? Request a quote or see specific gravity tank ratings.