How to use the Test Coverage Calculator
- 1. Enter what you haveFill any pairs: requirements, executed tests, passed tests, lines or branches.
- 2. CalculateLeave the rest blank; each filled pair becomes a percentage.
- 3. ReportCopy the numbers into your daily or release status update.
The metrics
- Requirement coverage = requirements with at least one test ÷ total requirements.
- Test execution = test cases executed ÷ planned.
- Pass rate = passed ÷ executed.
- Line coverage = lines run by tests ÷ total lines, from tools like JaCoCo, Istanbul or coverage.py.
- Branch coverage = decision branches taken ÷ total branches.
Worked example (defaults): 45 of 50 requirements have tests (90%), 170 of 200 planned cases have run (85%), 153 of those passed (90%), and unit tests run 8,200 of 10,000 lines, a line coverage of 82%.
What coverage does not tell you
Coverage shows where tests have been, not whether they checked the right things. A test can run every line of a function without asserting anything. Branch coverage is stricter than line coverage, because an if without an else counts as two branches but may be one line.
- Use requirement coverage to find untested features before release.
- Use execution and pass rate to track progress during a test cycle.
- Use code coverage trends to spot new code without unit tests.
- Pair coverage with defect numbers for a fuller quality picture.
Many teams set a code coverage floor such as 70–80% for new code, but a target that is pushed too hard leads to tests written only to raise the number. Track defects with the defect density calculator, and plan scope in the test plan generator.
Frequently asked questions
Do I need to fill every field?
No. Fill only the pairs you have; empty pairs are skipped.
Why is pass rate based on executed tests?
Tests not yet run cannot pass or fail. Execution progress is shown separately.
Is the Test Coverage Calculator free?
Yes, the Test Coverage Calculator is free. The first time you see your first result, you are asked for your name and WhatsApp number once. After that, this and every other Uncodemy tool opens straight away without the form.