Aquarium Volume & Weight
Multiply length, width and water depth, divide by 1,000 for litres — and since a litre weighs a kilogram, that is also the water weight. The last figure adds a rough allowance for glass and substrate.
Your numbers
Litres
64.8L
Water weight
64.8kg
Result
80.5kg
Formula
Litres = Length × Width × Depth ÷ 1000
A 60 cm tank holds about 65 kg of water alone. Ordinary furniture may not take that — check the stand.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Length (cm)The measurement across, side to side. | 60 | 0 and up |
| Width (cm)The measurement front to back. | 30 | 0 and up |
| Depth (cm)How deep it goes. | 36 | 0 and up |
Step by step
Quick reference table
Results when only Length (cm) changes and everything else stays put.
| Length (cm) | Litres (L) | Water weight (kg) | Result (kg) |
|---|---|---|---|
| 30 | 32.4 | 32.4 | 40.3 |
| 45 | 48.6 | 48.6 | 60.4 |
| 60 | 64.8 | 64.8 | 80.5 |
| 90 | 97.2 | 97.2 | 120.8 |
| 120 | 129.6 | 129.6 | 161 |
What each result means
| Result | At default values |
|---|---|
| Litres (L)Capacity in litres; one litre is 1,000 cm³. | 64.8 |
| Water weight (kg)The weight of the water inside; a litre weighs a kilogram. | 64.8 |
| Result (kg)What the formula gives back — the answer this page is for. | 80.5 |
Common mistakes
A 60 cm tank holds about 65 kg of water alone. Ordinary furniture may not take that — check the stand.
Glossary
- Length
- The measurement across, side to side.
- Width
- The measurement front to back.
- Depth
- How deep it goes.
- Litres
- Capacity in litres; one litre is 1,000 cm³.
- Water weight
- The weight of the water inside; a litre weighs a kilogram.
- Result
- What the formula gives back — the answer this page is for.
Frequently asked questions
Q. How is Aquarium Volume & Weight calculated?
Litres = Length × Width × Depth ÷ 1000 — Multiply length, width and water depth, divide by 1,000 for litres — and since a litre weighs a kilogram, that is also the water weight. The last figure adds a rough allowance for glass and substrate.
Q. Can you walk through an example?
With Length 60cm, Width 30cm, Depth 36cm, the answer is Litres 64.8L.
Q. What do I need to enter?
Enter Length, Width, Depth. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Length (cm) moves the answer to Length (cm) 30 → Litres (L) 32.4 and Length (cm) 120 → Litres (L) 129.6. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
A 60 cm tank holds about 65 kg of water alone. Ordinary furniture may not take that — check the stand.
Related calculators
Keep your length units consistent across inputs — mixing centimetres and metres throws results far off.