EPS Block Yield Calculator
Work out the weight and volume of a single EPS block, then see how many full blocks a given quantity of raw beads will produce.
Enter your block size, the finished foam density and how much raw bead you have on hand. The tool returns the volume and weight of one block and the number of full blocks the batch can mold — useful for production planning, batching and quoting in an EPS block molding operation.
Results
- Volume of one block
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- Weight of one block
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- Full blocks producible
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- Total foam volume (full blocks)
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"Full blocks" rounds down — partial blocks are not counted.
How this is calculated
Dimensions are converted to metres (1 mm = 0.001 m) and bead quantity to kilograms (1 t = 1000 kg) before computing:
- Block volume (m³) = length × width × height
- Block weight (kg) = block volume (m³) × density (kg/m³)
- Full blocks = floor( available bead mass (kg) ÷ block weight (kg) )
- Total foam volume (m³) = full blocks × block volume
Assumptions & limitations
- Block mass is taken as foam volume × density; raw bead consumed per block is treated as equal to block weight (pentane and moisture loss ignored), so real bead use is usually a little higher.
- No allowance for process scrap, trim, start-up blocks, density variation across the block, or beads left in the system.
- Dimensions are nominal mold dimensions; actual molded blocks may differ slightly after curing and trimming.
- Results are planning estimates — confirm against your own batch records.
Related equipment and reading:
- EPS block molding equipment — where blocks are formed.
- EPS block cutting lines — converting blocks into boards and shapes.
- EPS density guide — choosing the right density for your product.