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Cost Performance Index Calculator

Calculate the Cost Performance Index (CPI) — the ratio of Earned Value to Actual Cost — to measure cost efficiency. Use it as a core EVM metric to determine whether the project is delivering value efficiently or overrunning the budget.

Earned Value ($)

Actual Cost ($)

Fill in the required fields to see your result.

Project Management

Earned Value Calculator

Calculate the Cost Variance (CV) for a project as Earned Value minus Actual Cost, where Earned Value = Budget At Completion × Percent Complete. Use it to determine whether you are over or under budget for the work completed to date — a more meaningful metric than simple actual-vs-planned spend.

Budget at Completion ($)

Percent Complete (%)

Actual Cost ($)

Fill in the required fields to see your result.

Key differences

	Cost Performance Index Calculator	Earned Value Calculator
Category	Project Management	Project Management
Inputs required	2	3
Result	Cost Performance Index	Cost Variance ($)
What it does	Calculate the Cost Performance Index (CPI) — the ratio of Earned Value to Actual Cost — to measure cost efficiency. Use it as a core EVM metric to determine whether the project is delivering value efficiently or overrunning the budget.	Calculate the Cost Variance (CV) for a project as Earned Value minus Actual Cost, where Earned Value = Budget At Completion × Percent Complete. Use it to determine whether you are over or under budget for the work completed to date — a more meaningful metric than simple actual-vs-planned spend.