How much water does your aquarium hold? How much will your aquarium weigh when it is full?
Use our Aquarium Volume and Weight Calculator (available in U.S. and metric units) to find out how much your complete tank will hold and weigh. Can your floor support a heavy aquarium?
Quick Aquarium Weight Calculation (U.S. units)
Scroll down for metric unit calculation
Aquarium Volume and Weight Calculator (Metric Units)
If completely full, the weight of the water alone in your aquarium in kilograms (kg) is equal to the number of litres (L) it contains. However, this does not account for the weight of the substrate, decorations, the empty tank, or how full the tank is filled. Use the following aquarium weight calculator to more closely approximate the total weight of your aquarium.
What the Aquarium Weight Results Mean
These results are an approximation. Actual volume and weight may vary, depending on how full the tank, type of substrate, filter, decorations, etc.
For the weight of the substrate, we are using the general approximation that wet gravel or sand substrate weighs about twice as much as the equivalent volume of water. This is based on U.S. and U.K. standardized weight-to-volume ratios of common materials.
For more information on fish stocking for beginners, see The Complete Aquarium by Peter W. Scott.