This free production cost calculator works out your manufacturing cost per unit from the three things that actually drive cost on the shop floor — direct material, direct labour and machine cost — plus the fixed overhead spread across the batch. Enter your figures and it gives you variable cost per unit, fixed cost per unit, total cost per unit, a margin-based suggested price, total batch cost and batch profit instantly. It is a practical product costing tool for manufacturers who need a number they can quote and price against.
How to calculate production cost per unit
Production cost per unit is built from two layers — the costs that move with volume, and the costs that do not:
- Variable cost per unit = direct material + direct labour + machine cost. These rise unit-for-unit as you produce more, so they are entered per unit:
variable = material + labour + machine. - Fixed cost per unit = fixed overhead ÷ batch quantity. The batch’s fixed overhead (rent, supervision, depreciation) is spread across the units made:
fixed/unit = overhead / qty. - Cost per unit = variable cost per unit + fixed cost per unit, and the suggested price =
cost/unit × (1 + margin%).
Worked example. Say direct material is ₹40/unit, direct labour ₹20/unit and machine cost ₹15/unit — that is ₹75 variable per unit. Fixed overhead for the batch is ₹5,000 and you are making 100 units, so fixed cost per unit is ₹5,000 ÷ 100 = ₹50. Your cost per unit is ₹75 + ₹50 = ₹125. Add a 20% margin and the suggested price is ₹125 × 1.20 = ₹150. Total batch cost is ₹125 × 100 = ₹12,500, total revenue is ₹150 × 100 = ₹15,000, so batch profit is ₹2,500.
Fixed vs variable costs
Getting the split right is the heart of product costing. Variable costs scale with output; fixed costs are committed regardless of how many units you make. Here is where common manufacturing costs fall:
| Cost type | Examples | Behaviour |
|---|---|---|
| Variable (per unit) | Raw material, components, direct labour, power/consumables, machine running cost | Rises and falls with quantity produced |
| Fixed (per batch / period) | Factory rent, supervisor salaries, machine depreciation, insurance, admin | Stays the same whatever the batch size |
| Semi-variable | Electricity with a fixed connection + usage charge, maintenance | Has a fixed base plus a usage component — split it across the two buckets |
Why per-unit cost changes with batch size
Variable cost per unit barely moves with batch size — one unit’s worth of material and labour costs roughly the same whether you make 50 or 500. Fixed cost per unit is different: because it equals fixed overhead ÷ quantity, it falls as the batch grows. If your fixed overhead is ₹5,000, the fixed cost per unit is ₹50 over a batch of 100, but only ₹10 over a batch of 500. That single effect is why larger runs lower your cost of goods and why a job priced on a small-batch cost can look uncompetitive on a big order. Change the batch quantity in the calculator above and watch the cost per unit move — it is the fastest way to see your breakeven volume thinking play out.
From spreadsheet to ERP
A unit cost calculator answers one batch at a time, and a spreadsheet drifts the moment material prices change, a labour rate updates, or a BOM is revised. Inside OEMup ERP, costing is live: your true cost per unit is computed straight from each product’s bill of materials and routing, so when a component price or a machine rate changes, every quote and every standard cost updates with it — no re-keying, no stale spreadsheet. That keeps quoting accurate and protects your margin order after order. See it on your own products with a free trial, or explore everything it does on the features page.
Frequently asked questions
How do I calculate production cost per unit?
Add your per-unit variable costs — direct material + direct labour + machine cost — then add the fixed overhead for the batch divided by the batch quantity. At ₹75 variable and ₹5,000 fixed over 100 units (₹50/unit), cost per unit is ₹125. The calculator above does it instantly.
What is the difference between fixed and variable cost?
Variable costs (material, labour, machine/power) change with the number of units made, so they are entered per unit. Fixed costs (rent, supervision, depreciation, insurance) stay the same whatever the batch size, so they are entered once for the batch and spread across the units.
How does batch size affect unit cost?
Variable cost per unit stays roughly constant, but fixed cost per unit = fixed overhead ÷ quantity, so it falls as the batch grows. ₹5,000 of fixed overhead is ₹50/unit over 100 units but only ₹10/unit over 500 — which is why bigger runs lower the cost per unit.
How much margin should I add to production cost?
Most manufacturing SMEs add a 15–30% markup on production cost to cover selling, distribution and admin and still leave a profit; this tool defaults to 20%. Suggested price = cost per unit × (1 + margin/100). Make sure your cost already captures all material, labour, machine and fixed overhead first.
Need another shop-floor tool? Browse all free calculators, or jump to the Fabrication Cost Calculator, the Break-Even Calculator and the OEE Calculator.
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