📏 Tank Dimensions
💡 How to Use This Rectangular Tank Volume Calculator
This calculator helps you determine the exact capacity of any rectangular tank, whether it's a water storage tank, aquarium, fuel tank, or swimming pool. Simply follow these steps:
- Step 1: Enter the length, width, and height of your tank.
- Step 2: Select your measurement unit (Feet, Meters, Centimeters, or Inches).
- Step 3: Optionally set the fill level percentage to calculate partial volume.
- Step 4: Click "Calculate Tank Volume" to see results in multiple units.
The calculator instantly converts between cubic feet, cubic meters, US gallons, and liters — no manual conversions needed!
📐 Rectangular Tank Volume Formula
The volume of a rectangular tank is calculated using the simple formula:
V = L × W × H
Where:
- V = Volume of the tank
- L = Length of the tank
- W = Width of the tank
- H = Height of the tank
Once you have the volume in cubic units, use these conversion factors:
| From | To | Multiply By |
|---|---|---|
| Cubic Feet (ft³) | US Gallons | 7.48052 |
| Cubic Feet (ft³) | Liters | 28.3168 |
| Cubic Meters (m³) | US Gallons | 264.172 |
| Cubic Meters (m³) | Liters | 1000 |
| Cubic Inches (in³) | US Gallons | 0.004329 |
| Cubic Centimeters (cm³) | Liters | 0.001 |
🏠 Common Applications
💧 Water Storage Tanks
Calculate the capacity of residential or commercial water storage tanks. A typical household of 4 people uses 300-400 gallons per day. Use this calculator to size your cistern or water tank appropriately.
🐠 Aquariums & Fish Tanks
Determine the exact water volume for your aquarium to properly dose medications, conditioners, and select appropriate filters and heaters.
⛽ Fuel & Oil Tanks
Calculate storage capacity for diesel, gasoline, or oil tanks. Knowing the exact volume helps with inventory management and regulatory compliance.
🏊 Swimming Pools
Estimate pool water volume for chemical treatment, heating requirements, and water filling costs.
🌾 Agriculture & Farming
Size water tanks for livestock, irrigation systems, and crop spraying equipment.
📏 Tank Sizing Guide
Here are common rectangular tank sizes and their approximate capacities:
| Dimensions (ft) | Volume (ft³) | Gallons | Liters |
|---|---|---|---|
| 3 × 2 × 2 | 12 | 90 | 340 |
| 4 × 3 × 2 | 24 | 180 | 680 |
| 5 × 4 × 3 | 60 | 449 | 1,699 |
| 6 × 4 × 3 | 72 | 539 | 2,039 |
| 8 × 6 × 4 | 192 | 1,436 | 5,435 |
| 10 × 8 × 5 | 400 | 2,992 | 11,327 |
| 12 × 10 × 6 | 720 | 5,386 | 20,388 |