Carpet Calculator (Broadloom)
Linear metres of 3.66 m broadloom and the real order area for a room — seams and nap direction included.
All strips must run the same direction — carpet nap shades differently at 90°. A 4 m room on 3.66 m goods needs a second strip for the last 34 cm: that's normal, not a bad quote.
Formula
Carpet Calculator (Broadloom) is a free carpet calculator 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 Carpet Calculator (Broadloom)
Linear metres of 3.66 m broadloom and the real order area for a room — seams and nap direction included. The calculation implements strips = ⌈room width ÷ roll width⌉; order = strips × (length + 10 cm trim) (CRI Carpet Installation Standard 2015). All strips must run the same direction — carpet nap shades differently at 90°. A 4 m room on 3.66 m goods needs a second strip for the last 34 cm: that's normal, not a bad quote.
How to use Carpet Calculator (Broadloom)
- 1Enter Room length in m.
- 2Enter Room width in m.
- 3Enter Roll width in m (12 ft standard; some stock 13′6″ or 15 ft).
- 4Read Broadloom to order, Order area, Waste vs room area instantly — no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Carpet Calculator (Broadloom)?
- ✓Implements the standard formula — strips = ⌈room width ÷ roll width⌉; order = strips × (length + 10 cm trim)
- ✓Reference cited on-page: CRI Carpet Installation Standard 2015
- ✓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 Carpet Calculator (Broadloom) use?+
It computes strips = ⌈room width ÷ roll width⌉; order = strips × (length + 10 cm trim), per CRI Carpet Installation Standard 2015. 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?+
All strips must run the same direction — carpet nap shades differently at 90°. A 4 m room on 3.66 m goods needs a second strip for the last 34 cm: that's normal, not a bad quote.
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 Carpet Calculator (Broadloom) 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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