Wall Putty Calculator
Putty kilograms for two-coat finishing before paint.
Two thin coats beat one thick one — putty above 3 mm total tends to flake. Coverage halves on rough/undulating plaster; the trowel tells the truth.
Formula
Wall Putty Calculator is a free wall putty quantity for civil engineers, contractors and quantity surveyors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Wall Putty Calculator
Putty kilograms for two-coat finishing before paint. The calculation implements ≈ 0.75 kg/m² per coat (smooth plaster) (Putty maker coverage (JK/Birla ~14 ft²/kg/2 coats)). Two thin coats beat one thick one — putty above 3 mm total tends to flake. Coverage halves on rough/undulating plaster; the trowel tells the truth.
How to use Wall Putty Calculator
- 1Enter Wall area in m².
- 2Enter Coats.
- 3Read Putty needed, 40 kg bags instantly — no submit button needed.
- 4Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Wall Putty Calculator?
- ✓Implements the standard formula — ≈ 0.75 kg/m² per coat (smooth plaster)
- ✓Reference cited on-page: Putty maker coverage (JK/Birla ~14 ft²/kg/2 coats)
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Wall Putty Calculator use?+
It computes ≈ 0.75 kg/m² per coat (smooth plaster), per Putty maker coverage (JK/Birla ~14 ft²/kg/2 coats). The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Two thin coats beat one thick one — putty above 3 mm total tends to flake. Coverage halves on rough/undulating plaster; the trowel tells the truth.
Does it include wastage?+
Yes — standard wastage/bulking factors are built in and stated in the formula line, so the quantity is an orderable number, not a bare geometric volume.
Is the Wall Putty Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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