This is a simplified spreadsheet-style helper; certified counts follow full counting rules.

Function Point Calculator

IFPUG-style counts with complexity weighting.

What this tool does

Tally EI, EO, EQ, ILF, EIF at low/average/high complexity to get unadjusted function points and hours via configurable hours-per-FP.

External Inputs (EI), External Outputs (EO), External Inquiries (EQ), Internal Logical Files (ILF), External Interface Files (EIF)—counts per complexity tier. UFP = Σ count × weight.

Hours per UFP (calibration)

Type	Low	Avg	High
EI
EO
EQ
ILF
EIF

Unadjusted FP: 106.0

Effort hint: 901.0 hours

Example input/output

Illustrative sample — your real inputs may look different.

Example input

Sample ILF/EIF/EI/EO/EQ counts at AVG complexity

Example output

UFP total + hours via your hours/FP factor

Frequently asked questions

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