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Knowledge Toolbox

CIBSE's Knowledge Toolbox is a collection of applications, spreadsheets and data files that help you to do your job. Some of these can be downloaded below, and others will link directly to web tools.

Click on the tool you're interested in to find out more.  

Energy Benchmarking Dashboard

Relevant and reliable benchmarks, reflecting current trends in energy use

Benchmarking Registration

Embodied Carbon Calculator

Supports consultants, researchers and manufacturers in implementing the TM65 embodied carbon methodology

Embodied Carbon Calculator

Weather Data

Standard weather files to be used in building performance analysis using simulation tools

Weather Data

Relative Exposure Index Calculator

Compare the efficacy of various air cleaners with methods of natural ventilation for effective air cleaning

CIBSE Relative Exposure Index Calculator


Allows manufacturers to fully engage with the depth of detail required to create a fully circular economy-capable product


CEAM Specify

Allows designers, specifiers and engineers to quickly compare the circular economy implications of two or more products

CEAM Specify

Public Health Pipe-sizing Tool

A tool public health engineers to quickly and easily calculate required system parameters - COMING SOON!

Standard Drawing Symbols

A standardised set of drawing symbols that can be applied across the building services sector

CIBSE Standard Drawing symbols

Digital Engineering Series Templates

Free templates provided for use alongside the CIBSE Digital Engineering Series

Digital Engineering Series Templates

Energy Assessment Tool

Provided with TM22 'Energy assessment and reporting methodology' (2006)

TM22 Energy Assessment Tool

IAQ Analysis Tool

Provided with AM10 'Natural ventilation in non-domestic buildings' (2005)

AM10 IAQ Analysis Tool

Building Logbook Templates

Provided with TM31 'Building log book toolkit' (2006)

TM31 Building Logbook Templates