This free manufacturing cost calculator turns four numbers into your total manufacturing cost and cost per unit, broken down into direct materials, direct labour and manufacturing overhead. Enter your run totals and the units produced, and read your per-unit cost instantly — with prime cost, conversion cost and the percentage split of each component. No sign-up, results update as you type.
How to calculate total manufacturing cost
Total manufacturing cost adds three independent cost pools for a production run:
Total Manufacturing Cost = Direct Materials + Direct Labour + Manufacturing Overhead
- Direct materials — the raw materials and bought-in components that physically become part of the finished product.
- Direct labour — the wages of the operators who make the product, traceable to the run.
- Manufacturing overhead — every other factory cost: power, rent, depreciation, supervision, maintenance and consumables.
Once you have the total, the cost per unit is simply the total divided by how many units the run produced:
Cost Per Unit = Total Manufacturing Cost ÷ Units Produced
Worked example
Take a single production run with the following figures:
- Direct materials = ₹4,00,000
- Direct labour = ₹1,50,000
- Manufacturing overhead = ₹1,00,000
- Units produced = 5,000
Working it through:
- Total manufacturing cost = 4,00,000 + 1,50,000 + 1,00,000 = ₹6,50,000
- Cost per unit = 6,50,000 / 5,000 = ₹130 per unit
- Prime cost = materials + labour = 4,00,000 + 1,50,000 = ₹5,50,000
- Conversion cost = labour + overhead = 1,50,000 + 1,00,000 = ₹2,50,000
Here materials are roughly 62% of total cost, labour about 23% and overhead about 15% — a typical shape where material is the dominant lever. Shaving material waste moves the per-unit cost far more than trimming overhead.
Direct materials, direct labour and overhead explained
The three cost components behave very differently, which is why a manufacturing cost calculator keeps them separate rather than lumping everything together:
| Component | What it is | Examples |
|---|---|---|
| Direct materials | Traceable inputs that become the product | Steel, resin, castings, fasteners, packaging that ships with the unit |
| Direct labour | Wages of staff who physically make the product | Machine operators, assemblers, welders, finishers on the line |
| Manufacturing overhead | Indirect factory costs that cannot be traced to one unit | Power, factory rent, plant depreciation, supervisors, maintenance, consumables, QC |
Note that overhead is manufacturing overhead only — selling, marketing and head-office admin costs are not part of manufacturing cost. They sit below the gross margin line and are added later when you build a full selling price.
Prime cost vs conversion cost
Cost accountants slice the same three numbers two more ways, and both are useful:
- Prime cost =
direct materials + direct labour. The costs directly traceable to the product — what physically goes in and the hands that make it. - Conversion cost =
direct labour + manufacturing overhead. The cost of converting raw material into finished goods — the effort and factory resources used.
Direct labour is the one element shared by both, so prime cost and conversion cost overlap on labour and together cover the whole total (materials once, labour once, overhead once) only if you remember not to double-count labour. Prime cost tells you how material-intensive a product is; conversion cost tells you how process-intensive it is. A high conversion cost relative to prime cost is a signal that automation or overhead reduction will pay off more than material savings.
From manual costing to automatic costing in OEMup
A calculator answers one run. Running a plant means costing every product, every batch, as material prices, wage rates and output all move — and the spreadsheet version is out of date the moment a supplier raises a quote. Inside OEMup ERP, manufacturing cost is calculated automatically: material cost rolls up from the bill of materials at live purchase prices, direct labour comes from shop-floor time and routings, and overhead is applied by your chosen absorption basis — so total manufacturing cost and cost per unit update by themselves for every item. Start free or explore the full production & costing features to see costing handled end to end.
Manufacturing Cost Calculator — frequently asked questions
How do you calculate total manufacturing cost?
Total manufacturing cost = Direct materials + Direct labour + Manufacturing overhead. For example, ₹4,00,000 of materials + ₹1,50,000 of labour + ₹1,00,000 of overhead gives a total manufacturing cost of ₹6,50,000 for the run.
What is the difference between prime cost and conversion cost?
Prime cost is direct materials plus direct labour; conversion cost is direct labour plus manufacturing overhead. Direct labour appears in both. Prime cost shows what goes into the product, conversion cost shows the cost of transforming it. With the example figures, prime cost is ₹5,50,000 and conversion cost is ₹2,50,000.
What is included in manufacturing overhead?
Manufacturing overhead is every factory cost that is not direct materials or direct labour — power, factory rent, plant depreciation, supervision, indirect labour, maintenance, consumables, QC and factory insurance. It is sometimes called factory burden and must be allocated to products.
How do you find cost per unit?
Cost per unit = total manufacturing cost / units produced. A total of ₹6,50,000 over 5,000 units gives ₹130 per unit. This per-unit figure is the floor for pricing — any price below it loses money before selling and admin costs are even counted.
Need another shop-floor tool? Try our free calculator library or the Production Cost Calculator.
Stop rebuilding costing in spreadsheets
OEMup rolls up material, labour and overhead automatically — total manufacturing cost and cost per unit, live off your BOM and shop floor. Built for Indian manufacturing SMEs.
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