Radiator Sizing/Size Calculator (KWh and BTU)

Radiator sizing calculations are vitally important when designing a radiator-based heating system and this radiator size calculator will give you a helping hand. No need for complex radiator charts and sizing graphs!

It will calculate radiator BTU and KWh sizes for any number of rooms at a time. Just enter the room dimensions and a few other factors and the radiator size/radiator sizes are calculated for you.

Radiator Size Calculator - Free Version

How Many Rooms:
Standard Ceiling Height:	(can be changed for each room later)
Complexity:


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Radiator Sizing Calculator

Calculate your radiator sizes in KWh or BTU

Radiator Sizing/Size Calculator (KWh and BTU)