Praktické

Kalkulačka tapety

Wallpaper Calculator

Room length (m)

Room width (m)

Ceiling height (m)

Number of doors

Number of windows

Šířka role (m)

What is Wallpaper Calculator?

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Kalkulačka tapet odhaduje počet rolí potřebných k vytvoření papíru v místnosti na základě plochy stěny, rozměrů role a možnosti opakování vzoru.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

Vzorec

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f(x)Celková plocha stěny = obvod × výška − Dveře a okna

How to Wallpaper Calculator

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1Total wall area = Perimeter × Height − Doors and windows
2Usable per roll = Roll length / (1 + pattern repeat / (roll height))
3Rolls needed = Total area / Area per roll
4Add 10% for trimming and mistakes

Worked Examples

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Example 1

Given:Room 4m×3.5m, 2.4m ceiling, 52cm wide × 10m long rolls, 40cm pattern repeat

Výsledek:Wall area ≈ 36m²; ≈ 8 rolls needed

Real-World Applications

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Home renovation material quantity estimation

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Construction project planning and cost estimation

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Contractor quotes and materials ordering

Rolls Needed by Room Size

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Room width × length	Height 2.4m	Height 2.6m
3×3m (9m perimeter)	4–5 rolls	5–6 rolls
4×4m (12m perimeter)	6–7 rolls	7–8 rolls
5×4m (14m perimeter)	7–8 rolls	8–9 rolls
6×5m (17m perimeter)	9–10 rolls	10–11 rolls

Frequently Asked Questions

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What is Wallpaper?

A wallpaper calculator estimates the number of rolls needed to paper a room based on wall area, roll dimensions, and pattern repeat allowance. Use this calculator for accurate, instant results.

How accurate is the Wallpaper calculator?

The calculator uses the standard published formula for wallpaper. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Wallpaper calculator use?

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Wallpaper calculator use?

The core formula is: Total wall area = Perimeter × Height − Doors and windows. Each step in the calculation is shown so you can verify the result manually.

References

›Wallpaper calculator — Dulux

Porovnat s

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Paint vs Wallpaper

Formula-verified for precision

Reviewed October 2026

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