'Radiator Calculator' is the must have app for plumbers, builders or home DIY-ers. It quickly and easily allows you to calculate the ideal number and size of radiators for any room in the house.

Room details can be edited or saved for later use. You can even email the room specification and results to yourself or your clients. The app lets you adjust the following features for each room:

Room Type (e.g. Living Room / Kitchen)
Dimensions (switch between Feet and Metres easily)
Glazed Area
Glazing Type
Number of external walls
Wall type
Type of room below (e.g. heated/air gap)
Type of room above

What’s New

Version 1.1

Added BTU result when emailing the room information (thanks to Terry for the suggestion)
iOS 13 support
Faster start-up

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Lahaben ,


I truly enjoyed it & managed to make my calculations

App Privacy

The developer, Physmo, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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