Calculate the volume of a rectangular aquarium by providing the length, width and height in inches or centimeters and clicking the "Calculate Gallons" or "Calculate Liters" buttons.

Calculate the volume of a cube aquarium by providing the length, width and height in inches or centimeters and clicking the "Calculate Gallons" or "Calculate Liters" buttons.

Calculate the volume of a cylindrical aquarium by providing the diameter and the height in inches or centimeters and clicking the "Calculate Gallons" or "Calculate Liters" buttons.

Calculate the volume of a hex aquarium by providing the width of 1 side and the height in inches or centimeters and clicking the "Calculate Gallons" or "Calculate Liters" buttons.

Calculate the amount of sand needed to achieve a desired depth of sand within the aquarium. Enter the length and width of the aquarium and the desired sand depth, then click on the "Find Weight" button.

Convert temperatures from Fahrenheit to Centigrade or from Centigrade to Fahrenheit. Click the "Clear Conversion Results" button to clear all form fields.

Carbonate hardness, or carbonate alkalinity is a measure of the alkalinity of water caused by the presence of carbonate (CO2− 3) and bicarbonate (HCO− 3) anions. Convert carbonate hardness as parts per million (ppm or mg/L), degree KH (dKH) or Milliequivalents per liter.

Convert US gallons to liters, pint to liters, quart to liters, drops to milliliters, teaspoon to milliliters, tablespoon to milliliters and fluid ounces to milliliters.

Calcium and magnesium dissolved in water are the two most common minerals that make water "hard." The hardness of water is referred to by three types of measurements: grains per gallon, milligrams per liter (mg/L), or parts per million (ppm).

Many aquariums and aquarium decor is measured in inches or centimeters. Use this conversion tool to convert measurements from inches to centimeters or from centimeters to inches.