Welcome to COSMIC Sizing

The standard methodology for sizing software

Functional size measurement is an important basis for measuring software work effort and productivity. The COSMIC Functional Sizing Methodology is the mature standard for software size measurement. It is based on fundamental software principles, and is therefore suited to all types of software. The method was developed by a team of experts and builds on the original functional size measurement methodologies. The COSMIC Sizing methodology became an ISO standard in 2003.

Easy, Universal and Open

The COSMIC Functional Size Measurement Method is free, easy to learn and simple to use.  It is applicable to all types of software and any development technique including Agile.  The method is completely open, all the documentation is available in the public domain for free download. COSMIC is equally suited to Agile and Scaled Agile as other more traditional methodologies.

Introduction to the Method A great place to start learning about COSMIC.

The Measurement Manual v5.0 The manual that defines the method.

Translations The measurement manual and other documents translated into other languages.


The term COSMIC is an acronym for the Common Software Measurement International Consortium, the not for profit organisation that governs the standard and certifications.