Construction / CALCULATOR

Block Core Fill Volume

Block Core Fill Volume: explore an explicit model with input checks, a formula and a worked example.

Runs on your deviceUpdates as you typeFormula & example ↓
01

Your inputs

Adjust the values to explore a different result.

Enter blocks.
Enter cores per block.
mm
Enter core width in mm.
mm
Enter core length in mm.
mm
Enter core height in mm.
%
Enter waste allowance in %.

Formula

fill=count × cores × width × length × height /10⁹ × (1+waste).
  • Use the units shown beside each field.
  • Results update automatically whenever you change an input.
  • Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
  • Rectangular core approximation; use actual internal dimensions and exclude occupied reinforcement volume if significant. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.

Example Calculation

Example inputs
  • Blocks: 100
  • Cores per block: 2
  • Core width: 100 mm
  • Core length: 100 mm
  • Core height: 200 mm
  • Waste allowance: 5 %

100 blocks with two 100×100×200 mm cores need 0.42 m³ including 5% waste.

Frequently asked questions

How do I use this calculator?

Enter blocks, cores per block, core width, core length, core height, waste allowance. The result updates automatically. Use Reset to restore the example values.

What method does it use?

fill=count × cores × width × length × height /10⁹ × (1+waste).. Rectangular core approximation; use actual internal dimensions and exclude occupied reinforcement volume if significant. Quantity estimate only. Confirm actual dimensions, openings, cutting patterns and supplier specifications. No structural design or code-compliance assessment.

Why might a rounded result differ?

The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.

Are my inputs saved online?

No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.

Check the assumptions and units before using this result. Read about calculation methods.