1. What is a Filament Cost per Meter Calculator?

Definition: This calculator estimates the cost of filament per meter based on length, density, nozzle area, and price per gram.

Purpose: It helps 3D printing enthusiasts and professionals determine the material cost for their printing projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C_m \) — Cost per meter ($/m)
• \( L_f \) — Filament length (mm)
• \( \rho_f \) — Filament density (g/mm³)
• \( A_n \) — Nozzle area (mm²)
• \( P_f \) — Price per gram ($/g)

Explanation: The formula calculates the mass of filament used per meter and multiplies it by the price per gram to determine cost.

3. Importance of Filament Cost Calculation

Details: Accurate cost estimation helps in budgeting 3D printing projects, comparing material options, and optimizing print settings for cost efficiency.

4. Using the Calculator

Tips: Enter the filament length in mm, density (default 0.00125 g/mm³ for PLA), nozzle area (default 0.25 mm² for 0.5mm nozzle), and price per gram (default $0.05). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is density divided by 1000?
A: The division converts mm³ to cm³ for more practical density values (1.25 g/cm³ for PLA becomes 0.00125 g/mm³).

Q2: What's a typical filament density?
A: PLA is ~1.25 g/cm³, ABS ~1.04 g/cm³, PETG ~1.27 g/cm³. Convert to g/mm³ by dividing by 1000.

Q3: How do I determine nozzle area?
A: Area = π × (nozzle diameter/2)². For 0.4mm nozzle: π × (0.2)² ≈ 0.126 mm².

Q4: Where can I find price per gram?
A: Divide spool price by its weight. A $20 1kg spool = $0.02/g.

Q5: Does this include electricity or other costs?
A: No, this calculates only filament material cost. Consider other factors for total cost.