Technology & Computing
Cyclomatic Complexity Calculator
Calculate McCabe cyclomatic complexity from decision points and exit paths, with a risk band and suggested test count.
Your inputs
Change any value to update the result instantly.
Cyclomatic complexity
9
Risk band
0 Low risk
Suggested independent test paths
9
Complexity incl. exits
9
A complexity above 10 is a common threshold for recommending refactoring; above 50 functions are considered essentially untestable.
Formula and working
Complexity = decisions + 1 (edges − nodes + 2 for a single connected function)
- 1
Collect the inputs
Decision points (if/for/while/case/&&/||) = 8; Distinct exit points (return/throw) = 1
- 2
Apply the formula
Complexity = decisions + 1 (edges − nodes + 2 for a single connected function)
- 3
Result
Cyclomatic complexity = 9
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
Halstead Software Metrics Calculator
Compute Halstead volume, difficulty, effort, estimated coding time and predicted bug count from operator/operand counts.
Base64 Encoding Size Overhead Calculator
Calculate the encoded output size and storage overhead when converting binary data to Base64 text.
CMOS / RTC Coin Cell Battery Life Calculator
Estimate how many years a coin cell battery will power a real-time clock or CMOS circuit given its microamp draw.
CRC-32 Polynomial Overhead & Error Detection Calculator
Estimate the storage overhead of appending a CRC-32 checksum to a data frame and its burst-error detection capability.
Cron Schedule Interval Calculator
Estimate how many times a scheduled job runs per day and per month from its interval, and preview upcoming run offsets.
Gray Code to Binary Converter Calculator
Convert a value into its Gray code representation and its binary equivalent for a given bit width.