Conversion Tables

The figures in the blue column represent either of the two adjacent columns.
Example: 1 centimetre = 0.394 inch and 1 inch = 2.540 centimetres

Radiators

A radiator's output is measured in British Thermal Units per hour(BTU/hr) and each radiator should have enough capacity to heat the room it is fitted in to optimum temperature. The BTU/hr is calculated by multiplying the height, width and length of the room to get the volume in cubic feet. For rooms requiring 65?F/18?C multiply the volume by 4.4 rooms requiring 70?/21?C multiply by 5.