Aquarium Weight Calculator
Fill in the values and the answer updates as you type.
How the Aquarium Weight Calculator works
Fresh water weighs about 1 kg per liter. Total weight = water + substrate + decor and equipment + the empty tank and stand. Dividing by the footprint area shows the average floor load, which is only a guide because a stand concentrates weight on its legs. Residential floors are commonly designed for roughly 195 kg per square meter (40 lb per square foot), so ask a structural professional about large tanks, upper floors, and older buildings. Example: A 200 liter setup weighs about 265 kg, which is 552 kg per square meter on a 120 × 40 cm footprint.
Inputs and results
The Aquarium Weight Calculator takes 6 inputs and gives 3 results.
What you enter
- Water volume (liters) — starts at 200.
- Substrate (kg) — starts at 15.
- Rock, decor, and equipment (kg) — starts at 10.
- Empty tank and stand (kg) — starts at 40.
- Footprint length (cm) — starts at 120.
- Footprint width (cm) — starts at 40.
What you get
- Total loaded weight (kg)
- Total loaded weight (lb)
- Load on the floor (kg per square meter)
Example: Aquarium Weight Calculator with the starting values
With water volume 200 liters, substrate 15 kg, rock, decor, and equipment 10 kg, empty tank and stand 40 kg and footprint length 120 cm, the calculator returns:
| Total loaded weight (kg) | 265 |
|---|---|
| Total loaded weight (lb) | 584.2 |
| Load on the floor (kg per square meter) | 552 |
Change any value above and the results update straight away.
Aquarium Weight Calculator FAQ
How do I use the Aquarium Weight Calculator?
Enter water volume, substrate, rock, decor, and equipment and empty tank and stand in the fields, then read total loaded weight (kg), total loaded weight (lb) and load on the floor (kg per square meter) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Aquarium Weight Calculator calculate?
Total loaded weight of a tank and the load it puts on the floor. It returns total loaded weight (kg), total loaded weight (lb) and load on the floor (kg per square meter) from the 6 values you provide.
What values does the Aquarium Weight Calculator start with?
It opens with water volume 200 liters, substrate 15 kg, rock, decor, and equipment 10 kg and empty tank and stand 40 kg so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Aquarium Weight Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Aquarium Weight Calculator for medical or health decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm medical or health decisions with a qualified professional. See the Disclaimer for more.