Radiator Power Calculator
Calculate the required radiator heating power in watts based on room dimensions and insulation quality.
How to Use the Radiator Power Calculator
- Enter the dimensions of the area or structure (length, width, height).
- Specify material parameters if prompted (thickness, overlap, etc.).
- Review the calculated material quantity and coverage area.
- Use the results to plan your purchase and budget.
Référence rapide
| De | Vers |
|---|---|
| Paint (1 coat) | ~0.15 L/m² |
| Tile 30×30 cm | ~11 pcs/m² |
| Wallpaper roll | ~5.3 m² coverage |
| Laminate | +10% waste allowance |
| Cement (screed) | ~20 kg/m² (5 cm) |
| Bricks | ~50 pcs/m² wall |
Cas d'utilisation
- •Estimating the quantity of materials needed before purchasing.
- •Planning renovation budgets with accurate material calculations.
- •Reducing waste by computing exact material requirements.
- •Comparing costs between different material options for a project.
Questions fréquemment posées
How is required heating power calculated?
The standard formula uses 41 W per cubic meter of room volume, adjusted by an insulation factor.
What does the insulation factor mean?
Poor insulation requires 50% more power (×1.5), while excellent insulation can reduce the requirement by 40% (×0.6).
Should I add extra capacity?
Yes, it is common practice to add 20–30% buffer to the calculated value to ensure comfort on the coldest days.
Does ceiling height matter?
Yes — higher ceilings increase room volume and therefore require more heating power.