EVM Calculator

Enter your project details below to begin analysis

Project Details
0 / 30
0 / 60
Project Parameters
₦
days
days
%
₦
Planned Value (PV)
—
Budgeted work by now
Earned Value (EV)
—
Value of work completed
Cost Variance (CV)
—
EV − AC
Schedule Variance (SV)
—
EV − PV
CPI
—
Cost efficiency
SPI
—
Schedule efficiency
EAC
—
Estimated final cost
TCPI
—
Required future efficiency

Forecast & Chart

Visualise your project trajectory: actual vs planned vs forecast

Performance Chart
Forecast Overrides

By default, progress is linear. Override % complete at specific periods to bend the forecast curve.

No periods yet
Enter project data in the Calculator tab first.

Insights

Plain-English analysis of your project's health

📊
No data yet
Fill in the Calculator tab to generate insights.

Learn EVM

A step-by-step guide using one worked example throughout

What is EVM?

The project health check

Most projects track two things: how much they've spent and whether the deadline is close. EVM adds a third, more important question: how much value have you actually earned for what you've spent?

This guide walks through EVM using one example the whole way. Meet the Lagos Office Renovation: a project with a total budget of ₦10,000,000 planned to run for 20 weeks. By Week 10, the team has reported 40% completion and spent ₦5,500,000.

Step 1 of 5

Start with three numbers

Everything in EVM comes from three inputs. You already have them before any analysis begins.

Planned Value (PV): "What should be done by now?"
BAC × (Elapsed ÷ Duration) = ₦10M × (10 ÷ 20) = ₦5,000,000
At the halfway point in time, the plan expected half the budget's worth of work to be done. PV is your benchmark.
Baseline
Earned Value (EV): "What has actually been done?"
BAC × (% Complete ÷ 100) = ₦10M × (40 ÷ 100) = ₦4,000,000
The team is 40% done, so they've "earned" ₦4M of the total budget. This is the core EVM number. It converts physical progress into money.
Progress
Actual Cost (AC): "What has actually been spent?"
₦5,500,000 (from accounting records)
This is what's left your account. It comes directly from your books, not from any formula.
Input
Step 2 of 5

Measure the gaps

With PV, EV, and AC in hand, you can calculate two variances that tell you exactly where you stand.

Cost Variance (CV) = EV − AC
₦4,000,000 − ₦5,500,000 = −₦1,500,000

Negative means over budget. The team has spent ₦1.5M more than the work they've completed is worth.
Positive = under budget Negative = over budget
Schedule Variance (SV) = EV − PV
₦4,000,000 − ₦5,000,000 = −₦1,000,000

Negative means behind schedule. The work completed is ₦1M short of what was planned at this point in time.
Positive = ahead of schedule Negative = behind schedule
Step 3 of 5

Measure how efficiently you're working

Variances tell you how far off you are. Indexes tell you how efficiently you're working. A ratio below 1.0 is a warning.

Cost Performance Index (CPI) = EV ÷ AC
₦4M ÷ ₦5.5M = 0.73

For every ₦1 spent, you're earning only ₦0.73 of value. You're getting less than you're paying for.
≥ 1.0: Efficient 0.9–1.0: Watch < 0.9: Critical
Schedule Performance Index (SPI) = EV ÷ PV
₦4M ÷ ₦5M = 0.80

For every week that passes, only 0.8 weeks' worth of work is being completed. The project is running slow.
≥ 1.0: On or ahead 0.8–1.0: Slipping < 0.8: Critical
Step 4 of 5

Forecast where the project ends up

Once you have CPI, you can project the final cost of the project if nothing changes.

Estimate at Completion (EAC) = BAC ÷ CPI
₦10,000,000 ÷ 0.73 = ₦13,698,630
If the team keeps working at the current efficiency, the project won't cost ₦10M. It'll cost nearly ₦13.7M.
Forecast
Variance at Completion (VAC) = BAC − EAC
₦10M − ₦13.7M = −₦3,698,630
The project is forecast to finish ₦3.7M over budget. A negative VAC is always bad news.
Forecast
Estimate to Complete (ETC) = EAC − AC
₦13.7M − ₦5.5M = ₦8,198,630
Even though ₦5.5M is already spent, the project still needs another ₦8.2M to finish at current efficiency.
Remaining
Step 5 of 5

Know what recovery requires

TCPI answers the question: "If we want to finish on the original budget, how efficiently do we need to work from here?"

TCPI = (BAC − EV) ÷ (BAC − AC)
(₦10M − ₦4M) ÷ (₦10M − ₦5.5M) = ₦6M ÷ ₦4.5M = 1.33
To finish on budget, every remaining naira must deliver 1.33× the efficiency achieved so far. Since current CPI is 0.73, this is not realistic without a major intervention. A budget revision is likely the more honest path.
Recovery

The key rule of thumb: CPI rarely improves significantly after a project is 20% complete. The earlier you catch a poor CPI, the more options you have. EVM gives you that signal while there's still time to act.

Try It

See this example in the calculator

Load the Lagos Office Renovation example directly into the calculator to see all the results, chart, and insights populated with the numbers from this guide.

This will overwrite any inputs you currently have in the calculator.

Switch Theme
Quick Tour
Save Project
Reset Workspace