Plaster Table: Plaster volume by Wall length
Reference table of plaster volume for Plaster across a range of wall length values — exact, engine-computed figures you can read off at a glance.
Plaster Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Plaster volume
0.6600
- Wall area
- 50.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Plaster Calculator
The Plaster Calculator works out your plaster volume, along with 1 related figure in an instant. Enter wall length, wall height and plaster thickness and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the wall length.
- Enter the wall height.
- Enter the plaster thickness.
- Enter the wastage allowance.
- Read off your plaster volume, together with wall area — the calculator updates automatically, with no button to press.
Formula
The Plaster Calculator uses the formula:
Plaster volume = Wall length × Wall height × Plaster thickness ÷ 1000 × (1 + Wastage allowance ÷ 100)
Worked example
For example, with wall length of 10 m, wall height of 5 m, plaster thickness of 12 mm and wastage allowance of 1%, the plaster volume is 0.6600.
| Wall length | 10 m |
|---|---|
| Wall height | 5 m |
| Plaster thickness | 12 mm |
| Wastage allowance | 1% |
| Plaster volume | 0.6600 |
|---|---|
| Wall area | 50.00 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
- Area
- The amount of two-dimensional space a shape covers, measured in square units.
Frequently asked questions
Multiply wall area by thickness, then add wastage. A 10×5 m wall at 12 mm with 10% waste needs about 0.66 m³.
Internal walls often use 12 mm; rough or external surfaces may need 15–20 mm in one or two coats.
Some plaster is lost to spillage, uneven walls and mixing, so 10–15% extra is sensible.
Multiply the wet volume by your mix's dry-material factor, which depends on the cement-to-sand ratio.
Enter the wall length. Enter the wall height. Enter the plaster thickness. Enter the wastage allowance. Read off your plaster volume, together with wall area — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Plaster: Formula, Steps & Examples
Learn how to calculate Plaster — the formula explained step by step, with worked examples and a free calculator to check your answer.