1. What is Filament Length Calculator?

Definition: This calculator estimates how many meters of filament are in 1 kilogram based on the material density and filament diameter.

Purpose: It helps 3D printing enthusiasts and professionals determine how much filament they have or need for projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L_f \) — Filament length (meters per kilogram)
• \( \rho_f \) — Filament density (g/cm³)
• \( A_n \) — Cross-sectional area (mm²)

Explanation: The formula converts 1 kg (1000g) into length by accounting for the material density and the filament's cross-sectional area.

3. Importance of Filament Length Calculation

Details: Knowing the length per kilogram helps with project planning, material ordering, and estimating print times.

4. Using the Calculator

Tips: Enter the filament density (default 1.25 g/cm³ for PLA) and diameter (default 1.75 mm). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical density for PLA filament?
A: PLA typically has a density of about 1.25 g/cm³, while ABS is around 1.04 g/cm³.

Q2: How does diameter affect the length?
A: Thicker filament (larger diameter) means fewer meters per kilogram because each meter contains more material.

Q3: What are common filament diameters?
A: The most common diameters are 1.75 mm and 2.85 mm (or 3 mm).

Q4: Does this account for spool weight?
A: No, this calculates only the filament length. Remember to subtract the spool weight when measuring remaining filament.

Q5: How accurate is this calculation?
A: It provides a theoretical value. Actual length may vary slightly due to manufacturing tolerances in diameter.