How to Calculate the Total Operating Costs & Breakeven Volume. You can calculate the break-even volume for a product from the product's variable costs and the total operating costs of the company.

The simplest way to calculate revenue when volume price changes is to multiply the number of units sold at each price level. If you sell 10,000 widgets at $1.00 each, your revenue is $10,000.

This KS2 maths article explains how to calculate the volume of a cuboid or cube using an equation.