Copper Wire Weight Calculator

Estimate how much a length of copper wire weighs from its cross-section.

How the Math Works

The Copper Wire Weight Calculator uses the fundamental formula: mass equals density multiplied by volume. Since volume of a cylinder (like a wire) is calculated as length times cross-sectional area, the complete formula becomes mass = density x length x area. For copper specifically, we use a standard density value of 8,960 kg/m³, which means every cubic meter of copper has a mass of 8,960 kilograms. This straightforward multiplication gives you the total mass of copper needed for your wire project.

Practical Applications

To use this calculator practically, you'll need three measurements: first, determine the total length of copper wire required in meters; second, find the wire's cross-sectional area, which can be calculated from the wire gauge diameter using the formula for circular area (πr²) or converted from standard wire gauge charts; third, ensure all measurements use consistent units before multiplying by copper's density of 8,960 kg/m³. Simply input these three values and multiply them together to get the exact mass of copper needed for your electrical project, preventing over-purchasing while ensuring you have enough material.

Day-to-Day Use

Knowing your copper wire weight helps you budget for electrical projects by calculating exact material costs before visiting the hardware store, saving both time and money. Whether you're installing new wiring, repairing appliances, or creating DIY electronics, this calculation prevents guesswork about how much copper to purchase. It's especially valuable for electricians quoting jobs, hobbyists building custom projects, or anyone working with copper piping, as it provides precise quantities needed for efficient planning and resource management.

Worked example

100 m of 2.5 mm² copper → about 2.24 kg.

FAQ