How do you calculate batch cost?

Multiply material weight by the blended rate and the capture factor, then add fixed overhead. For 250 kg at $4.50/kg with 95% capture plus $180 overhead, batch cost is $1,248.75, or $4.995 per kg.

What is the material capture factor?

It is the percentage of charged material that ends up in saleable product. At 95% it captures $1,068.75 of the material value; the remaining 5% is loss you still paid for but don't sell.

What is a good cost per kg for a blend?

It depends entirely on the recipe's raw materials, but the figure to watch is how much fixed overhead inflates it on small batches. Here overhead adds $0.72/kg on top of the ~$4.28/kg captured material cost.

How does batch size affect cost per kg?

Fixed overhead spreads over more kilograms as batches grow, so cost per kg falls with size. The $180 overhead is $0.72/kg on a 250 kg batch but only $0.36/kg if you double the batch.

Why include a capture factor instead of just material weight?

Because you pay for everything you charge but only sell what converts. Ignoring capture undercosts the batch; the 95% factor here strips $56.25 of unsellable material value out of the material line before overhead.

Batch cost vs cost per kg — which should I quote on?

Quote per kg for variable-volume orders and per batch for fixed-size production. Both come from the same calculation; the per-kg figure ($4.995 here) normalizes across batch sizes for fair comparison.

Mixing, Blending & Industrial Batch Processing calculator

Batch Cost Calculator

Batch cost is the fully-loaded cost of producing one mixed or blended batch, combining the value of material that actually ends up in product with the fixed overhead the batch carries regardless of size. Cost accountants and production planners on compounding and blending lines use it to quote work, set transfer prices, and decide economic batch sizes. The material capture factor is what makes it honest — it discounts for the fraction of charged material that doesn't convert to saleable product. The result is a defensible cost per batch and per kilogram you can stand behind in a quote.

What this calculator does

Build a defensible batch cost from material weight, blended material rate, capture factor, and fixed overhead per batch.
Use it when a recipe is being put through a weighted-cost review and finance needs a per-batch material and overhead number, not just standard cost.
It computes total batch cost from material weight times blended rate times capture factor plus fixed overhead, then divides by weight to give cost per kg.

Formula used

Batch cost = batch material weight × blended material rate × capture factor + fixed overhead
Cost per kg = batch cost ÷ batch material weight

Inputs explained

Batch material weight:
Blended material rate:
Material capture factor:
Fixed overhead per batch:

How to use the result

Use it when quoting a blend, setting an economic batch size, or comparing the loaded cost of running a recipe at different volumes.
Fixed overhead is treated as a flat per-batch number; if your real overhead scales with batch size or changeover complexity, a single flat figure will mis-cost large versus small runs.

Common questions

How do you calculate batch cost? Multiply material weight by the blended rate and the capture factor, then add fixed overhead. For 250 kg at $4.50/kg with 95% capture plus $180 overhead, batch cost is $1,248.75, or $4.995 per kg.
What is the material capture factor? It is the percentage of charged material that ends up in saleable product. At 95% it captures $1,068.75 of the material value; the remaining 5% is loss you still paid for but don't sell.
What is a good cost per kg for a blend? It depends entirely on the recipe's raw materials, but the figure to watch is how much fixed overhead inflates it on small batches. Here overhead adds $0.72/kg on top of the ~$4.28/kg captured material cost.
How does batch size affect cost per kg? Fixed overhead spreads over more kilograms as batches grow, so cost per kg falls with size. The $180 overhead is $0.72/kg on a 250 kg batch but only $0.36/kg if you double the batch.
Why include a capture factor instead of just material weight? Because you pay for everything you charge but only sell what converts. Ignoring capture undercosts the batch; the 95% factor here strips $56.25 of unsellable material value out of the material line before overhead.

Last reviewed 2026-05-12.