1. What is a Round Metal Weight Calculator?

Definition: This calculator estimates the weight of round metal bars or rods based on their dimensions and material density.

Purpose: It helps metalworkers, engineers, and manufacturers determine the weight of cylindrical metal pieces for transportation, costing, and structural calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Weight (kilograms)
• \( r \) — Radius of the metal (meters)
• \( L \) — Length of the metal (meters)
• \( \rho \) — Metal density (kg/m³)

Explanation: The formula calculates the volume of the cylinder (πr²L) and multiplies it by the material density to get the weight.

3. Importance of Metal Weight Calculation

Details: Accurate weight calculations are essential for structural engineering, shipping costs, inventory management, and material selection in construction and manufacturing.

4. Using the Calculator

Tips: Enter the radius and length in meters, and the metal density (default 7850 kg/m³ for steel). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What if I know the diameter instead of radius?
A: Simply divide the diameter by 2 to get the radius before entering the value.

Q2: What are typical density values for common metals?
A: Steel: 7850 kg/m³, Aluminum: 2700 kg/m³, Copper: 8960 kg/m³, Brass: 8520 kg/m³.

Q3: Can I use this for hollow tubes?
A: No, this calculator is for solid round bars. For tubes, you'd need to subtract the inner volume.

Q4: How do I convert the result to pounds?
A: Multiply the result in kg by 2.20462 to get pounds.

Q5: Why is the default density set to steel?
A: Steel is the most commonly used metal in construction and manufacturing applications.