Required Stove output calculator (KW)

Choosing the right stove for your home is essential for both comfort and energy efficiency. Our easy-to-use Stove kW Calculator helps you determine exactly what size wood-burning or multi-fuel stove you need. Simply enter your room’s length, width, and height, then select your insulation level. You’ll get a recommended kW output tailored to your space—no guesswork required!

Whether you have a small cosy room or an open-plan living area, our calculator takes the hassle out of choosing the correct stove. Designed by Camden Fires, this tool ensures you get maximum warmth without overheating your home. Use our free kW calculator today and enjoy the perfect balance of efficiency and comfort.

What Stove Do I Need?

This is a guide only. For open plan, large glass, or unusual rooms, contact us for tailored recommendations.

How do you calculate the required KW?

  1. First, we calculate your room’s total volume by multiplying the length, width, and height. This tells us how much air your stove needs to heat.
  2. Next, you select your insulation level. Well-insulated, modern homes require less heat, while older properties may need a more powerful stove.
  3. We apply a standard calculation used by heating professionals:

• Poor insulation: 0.06 kW per m³

• Average insulation: 0.04 kW per m³

• Good insulation: 0.025 kW per m³

4 .To ensure comfort even on the coldest days, we add a safety margin, rounding up your result to the nearest available stove size.

This approach means you’ll always see a stove size recommendation that’s both efficient and practical for your unique space—no more guesswork or risk of an underpowered stove!