EVM Calculator
<p>This calculator computes all core earned value management metrics from four inputs. Enter your Budget at Completion (BAC), Planned Value (PV), Earned Value (EV), and Actual Cost (AC) to generate Cost Performance Index (CPI), Schedule Performance Index (SPI), Cost Variance (CV), Schedule Variance (SV), Estimate at Completion (EAC), Estimate to Complete (ETC), To Complete Performance Index (TCPI), and Variance at Completion (VAC).</p>
The Earned Value Management (EVM) Formula
CPI = EV / AC | SPI = EV / PV | CV = EV minus AC | SV = EV minus PV | EAC = BAC / CPI | ETC = EAC minus AC | TCPI = (BAC minus EV) / (BAC minus AC) | VAC = BAC minus EAC
How to Use This Calculator
Enter four values and the calculator computes every core EVM metric. BAC is your total approved budget. PV is the budgeted cost of work scheduled through today. EV is the budgeted cost of work actually completed. AC is the money actually spent. All derived metrics (CPI, SPI, CV, SV, EAC, ETC, TCPI, VAC) are calculated from these four inputs.
When to Use an EVM Calculator
Use this calculator at every performance reporting period to generate the metrics needed for status reports, sponsor updates, and forecasting discussions. Enter actual data from your cost accounting and progress tracking systems. The calculator is most valuable after the project is 15% to 20% complete, when CPI and SPI begin to stabilize and produce reliable forecasts.
Common Questions About EVM Calculator
What inputs do I need for an EVM calculator?
Four values: Budget at Completion (BAC), Planned Value (PV), Earned Value (EV), and Actual Cost (AC). All other EVM metrics (CPI, SPI, CV, SV, EAC, ETC, TCPI, VAC) are derived from these four inputs using standard formulas.
Which EAC formula does this calculator use?
This calculator uses EAC = BAC / CPI, which assumes current cost efficiency will continue for remaining work. This is the most commonly used formula and the most reliable after the project is 20% complete. Alternative EAC formulas exist for different assumptions about future performance.
What do the results mean if CPI and SPI are both below 1.0?
The project is both over budget and behind schedule. This is the most concerning scenario. The EAC shows the projected final cost, and TCPI shows the efficiency required on remaining work to recover. If TCPI exceeds 1.20 to 1.30, the original budget is likely unrecoverable without scope reduction.