Average Variable Cost (AVC) Calculator
From total variable cost and output, compute the average variable cost per unit (AVC).
Input Data
Results
At a glance:AVC = total variable cost / quantity. Variable costs vary with output (materials, piece-rate wages, packaging, metered utilities); fixed costs do not. AVC is the short-run shutdown-point benchmark — produce only if price covers AVC. AVC + AFC = ATC. WARNING: AVC is typically U-shaped; this is an average at a single output, not marginal cost; the variable/fixed split is context-dependent.
Formula
AVC = total variable cost / quantity.
ATC = AVC + AFC (average total cost = average variable cost + average fixed cost).
How to Use
- Enter the total variable cost for the period.
- Enter the output quantity.
- View the average variable cost per unit.
FAQ
How do I split variable and fixed costs?
Variable costs move with output — more production means a larger total (materials, piece wages, packaging, metered utilities). Fixed costs stay broadly constant within a range (rent, management salaries, depreciation). The split is not absolute: over a longer horizon or a big capacity expansion, many 'fixed' costs also move. Judge by the decision's time horizon.
What is the link between AVC and the shutdown point?
In the short run, if the selling price exceeds AVC, each unit sold covers variable cost and contributes toward fixed cost, so producing is better than stopping. If price falls below AVC, you cannot even recover variable cost and lose more by producing — shutting down minimises loss. So AVC is the economics 'shutdown point'.
Can I use AVC directly for pricing?
AVC is only a pricing floor, not a standalone price. A proper price must also cover average fixed cost (AVC + AFC = ATC), add target profit, and consider demand and competition. Pricing at AVC alone leaves fixed costs unrecoverable and the business loses money long term. AVC is better for short-run capacity and order decisions (e.g. whether to accept a low-ball urgent order).
How is AVC different from marginal cost (MC)?
AVC is an 'average' (total variable cost / total output); MC is 'incremental' (cost of one more unit). They differ: when MC < AVC, making one more unit pulls the average down; when MC > AVC, AVC rises. The AVC U-shape's minimum is where MC crosses AVC. For order decisions, strictly look at MC; where cost is stable and roughly proportional, AVC is a practical proxy.
How does AVC change with output (why U-shaped)?
In the short run AVC is usually U-shaped. At low output, plant and labour are underused and there is a learning effect, so unit variable cost is high; as output rises, specialisation and scale lower it into a trough; near capacity, overtime, machine strain and material premiums push marginal cost up and AVC rises again. This tool computes the average at one output; to see the U-shape, enter the actual total variable cost at different outputs, not a fixed total.
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References
Content review: Calculatorism Finance Team. Results are for reference only; please refer to the relevant authorities for the official figures.