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BTU Calculator

Use this calculator to find the BTU (energy) requirement to heat your room. We'll then show you a selection of products that match your requirement.

Which room would you like to heat?

Living Room

Dining Room

Hallway

Kitchen

Bedroom

Bathroom

What are the dimensions of the room?

Length (metres):*

Width (metres):*

Height (metres)*

How insulated is the room?

Sheltered / Exposed*

Window Type*

Results

The BTU requirement for this room is between

and

For larger rooms, consider splitting your heat output into multiple radiators to avoid cold spots in a room.

Shop matching radiators

Please note that all calculations are approximate; for more accurate results a heating engineer should be consulted.