Tips
How to use Aquarium Substrate Calculator
- Use different front and rear depths to calculate a sloped layout using average depth.
- Product density and package units vary, so confirm the manufacturer's label before buying.
Everyday tool
Aquarium Substrate Calculator
Enter inside tank dimensions, front and rear substrate depth, material type, allowance, and bag size to estimate purchase volume, weight, and bag count.
Substrate volume & bag estimateSupports flat or front-to-back sloped substrate.
Open tank volume calculator →Tank base & depth
Product & purchase settingsUse the package volume printed by the manufacturer
Slope preview
Average depth 2.3 in · difference 1.5 in
Substrate result
Recommended purchase volume11.7 L10.6 L required + 10% allowance
Estimated number of bags2 bags
8 L × 2 = 16 L
Required volume10.6 L
Estimated weight≈ 17.5 kg
Average depth2.3 in
Coverage100%
Weight is estimated from average bulk density and can vary by grain size, moisture, and product. Bag counts use liters; if a product is sold only by weight, check the manufacturer's volume or density.
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