formula for total variable cost
Formula of Variable Cost. The formula to calculate variable cost is: Total Variable Cost = Total Quantity of Output * Variable Cost Per Unit of Output. To recognize variable costs, it is important to understand how to categorize costs.Variable costs are those which do not remain constant, specifically when production activities fluctuate.ormula of Variable Cost. The formula to calculate variable cost is: Total Variable Cost = Total Quantity of Output * Variable Cost Per Unit of Output. To recognize variable costs, it is important to understand how to categorize costs.