Accurately calculate the heating requirements for any room in your home. This tool supports unlimited rooms, offers precise calculations in Watts and BTU, and features a clean, intuitive design with dark mode support.





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Looking for something like BTU Radiator Calculator? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.





Accurately calculate the heating requirements for any room in your home. This tool supports unlimited rooms, offers precise calculations in Watts and BTU, and features a clean, intuitive design with dark mode support.

















Estimate electric vehicle charging time, range, and cost across various charging systems. Features customizable charging speeds, a range slider, and a countdown timer with notifications. Supports all charger types and major EV models, with zero personal data collection and no ads.


Monitor and manage your GivEnergy inverter(s) with this straightforward application. It allows for independent control of up to three connected inverters. Resetting IP addresses is easily managed through the iOS Files app.


Discover and reserve nearby electric vehicle charging stations powered by a community network. This app offers affordable, pay-as-you-go charging with live session data and route navigation.


Effortlessly manage your home's heating and hot water from anywhere. This app allows for precise temperature adjustments, custom scheduling, and independent control of multiple zones and radiators for optimal comfort and energy efficiency.


This app provides essential wiring installation information for heating controls directly on your mobile device. It includes diagrams for various heating systems, a fault-finding section, and a store locator for products. A rewards program link is also integrated.