Function Point Estimator

Function Point Estimate Worksheet



Use this worksheet to determine the conceptual staff month estimate required to complete a software development project. Simply complete Steps 1 through 4 and the estimator does the rest.

Note that if this page is saved using the "Save As...Format...Source" command from your browser's "File" menu. It can be run locally when loaded into your browser using "Open File", even without an active Internet connection.

Step 1-Enter Your Function Point Counts

ESTIMATED FUNCTION POINT COUNTS
Complexity Factors
Function Point Category
Simple
Average
Complex
Category Description
External Input (EI)
Data received from outside the subsystem.
Data with unique processing requirements are
counted as separate EI's. Examples are
windows, data packets/files, voice, tones,
teleprocessing signals, bar code, button
controls, etc. Complexity factor bases.
External Output (EO)
Data generated within the subsystem that
exit the boundary or retrievals of data
upon operator request that contain
any derived or calculated information.
Examples are outgoing Emails,messages,
commands, processing instructions,
routed calls, faxes, etc. Complexity factor bases.
External Inquiry (EQ)
Unique operator trigger (question)/response
(answer)combinations that retrieve
data without any mathematical
calculation. Usually common retrieve,
view, extract, display, browse or
print functions.
Internal Logical Files(ILF)
Data stores that are maintained within the
subsystem. Examples are user
profles, customer data, inventory
data, parameter values, look up
tables, etc.Complexity factor bases.
External Interface Files (EIF)
Data extracted or read from another
subsystem's ILF's. Examples: Help,
security, parameters, system tables/
directories, edit/validation tables,
operating system status, etc.>
Total Unadjusted function point count:

Step 2-Enter a function point adjustment factor.

FPAF (0.65 - 1.35):

Link to FPAF calculator.

Step 3-Enter a productivity factor (Function Points per staff Month).

Assumed Productivity (5 - 15):

Step 4-Click on Compute for Effort (Staff Month) Calculation Results



Staff Months
Staff Months based on 150 hours per month.
Planning
Design
Detail
Design
Programming
Test


Email Anova




© 2017 Anova Corp, PC All rights reserved.



















Bases for determining functional complexity


External Input (EI)
Data Fields
File Types1-45-1816+
< 2SSA
2SAC
> 2ACC
Back




External Output (EO)
Data Fields
File Types1-56-1920+
< 2SSA
2 - 3SAC
> 3ACC
Back




Internal Logical Files (ILF)
Data Fields
Data Element Types1-1920-5960+
< 2SSA
2 - 6SAC
> 6ACC
Back