Ceiling battens Calculator: measuring notes and method
Check stock length against batten length
A counted batten may be longer than available stock. Prepare a cut-and-joint schedule rather than treating every counted member as one purchasable length.
Account for ceiling details
Count access-opening supports and changes in direction separately from the parallel battens. Section and support requirements come from the project detail.
Formula
Pieces before waste = round up(run ÷ maximum spacing) + 1 + extras. Apply waste and round up.
Worked examples in metric and imperial units
Illustrative values match Reset example and stay fixed when you edit the calculator. Both columns describe the same calculation; converted inputs are rounded.
Metric worked example
- Run length
- 6 m
- Maximum centres
- 450 mm
- Length per piece
- 2.4 m
- Extra pieces for ends / openings
- 0
- Waste allowance
- 10 %
Battens to buy: 17
Imperial worked example
- Run length
- 19.685 ft
- Maximum centres
- 17.7165 in
- Length per piece
- 7.874 ft
- Extra pieces for ends / openings
- 0
- Waste allowance
- 10 %
Battens to buy: 17
Follow the calculation
Lengths in this working are in metres.
- Intervals = 6 ÷ 0.45, rounded up.
- Add one end piece and 0 extra pieces, then multiply by 1.1 and round up.
- Each counted piece is 2.4 m long.
Reviewed 19 October 2026. How calculations are checked · Report a correction
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