Filter Media Calculator
Calculate filter media volume, weight and flow rate for your filtration system. Determine optimal media quantity based on filter dimensions, media type and density.
How the filter media calculator works
This calculator estimates the volume, weight and flow rate of filter media needed for your filtration system. Enter your filter dimensions (length, width, depth) and select a media type — the calculator uses standard density values for sand, activated carbon, zeolite, anthracite, garnet and glass media. You can also input a custom density.
The tool calculates the filter bed area, media volume, total media weight, and provides a recommended flow rate based on the media type. A media replacement estimate is also provided to help with maintenance planning.
Step 1: Filter Specifications
Filter Media Basics
Filter media is the granular material that traps suspended particles. The volume of media needed depends on your filter’s footprint and the desired bed depth.
Step 2: Media Properties
Media Selection Tips
Activated carbon is best for removing chemicals and odours. Sand is ideal for sediment filtration. Zeolite excels at ammonia removal. Choose media based on your specific water quality goals.
Filter Media Results
Total Media Weight
Media Type Comparison
| Media Type | Density (kg/m³) | Weight (kg) | Flow Rate (m³/h) | Replacement (years) |
|---|
Media Breakdown
Filter Media Calculation Formulas
Volume = Area × Depth
Rectangular: Area = Length × Width | Cylindrical: Area = π × Radius²
Weight = Volume × Density × (1 − Porosity) — porosity accounts for void space between media particles.
Flow Rate = Area × Hydraulic Loading Rate — typical loading rates vary by media type.
Frequently Asked Questions
What is filter media?
Filter media is the granular material inside a filter that traps suspended particles, contaminants and impurities from water or air. Common types include sand, activated carbon, zeolite, anthracite, garnet and glass media.
How do you calculate filter media volume?
Filter media volume is calculated by multiplying the filter bed area (length × width for rectangular, or π × radius² for cylindrical) by the media depth. The calculator handles both shapes automatically.
What is the density of filter media?
Density varies by media type: silica sand ~1,600 kg/m³, activated carbon ~500 kg/m³, zeolite ~1,200 kg/m³, anthracite ~850 kg/m³, garnet ~2,100 kg/m³, glass media ~1,500 kg/m³. The calculator uses these default values but allows custom inputs.
What is the recommended flow rate for a filter?
Recommended flow rate depends on media type and application. For sand filters, 8-12 m³/m²/h is typical. Activated carbon filters run at 5-10 m³/m²/h. The calculator provides estimates based on standard engineering guidelines.
How often should filter media be replaced?
Replacement frequency depends on media type, usage and water quality. Sand media typically lasts 5-10 years, activated carbon 1-3 years, zeolite 2-5 years. The calculator provides estimates based on standard industry recommendations.
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