Shoe size "Footwear - Sizing - Vocabulary and terminology"; currently in development are companion standards ISO/TS 19409 "Footwear - Sizing - Measurement of last dimensions" and ISO/TS 19410 "Footwear - Sizing - Inshoe measurement". The adult shoe sizes are calculated from typical last length, which is converted from foot length in mm by adding an allowance of two shoe sizes: where formula_13 is foot length in mm. Direct conversion between adult UK, European and Mondopoint shoe size systems is derived as follows: Exact foot lengths may contain repeating decimals because the formulas include division by 3; in practice, approximate interval steps of
Software sizing 30 FPs (Function Points) without identifying the project effort required to produce it. Historically, the most common software sizing methodology has been counting the lines of code written in the application source. Another approach is to do Functional Size Measurement to express the functionality in a number, representing the size. The most well-known sizing method is the IFPUG method called Function point analysis. The IFPUG FPA functional sizing method (FSM) has been used successfully — despite being less accurate in estimating complex algorithms and being relatively more difficult to use than estimating lines of code. Other Functional Size Measurement standards