From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Earned Value Management (EVM) Calculator

CPI, SPI, variances and a forecast at completion from planned value, earned value and actual cost.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-27 · v1.0.0

Market
Imperial · sales tax

Estimate at completion

1166666.67 currency

High confidence

Over budget and behind schedule on the figures given. TCPI shows the efficiency the remaining work would need to still land on budget.

Cost performance index (CPI)
0.86
Schedule performance index (SPI)
0.9
Cost variance (CV)
-60000 currency
Schedule variance (SV)
-40000 currency
Variance at completion (VAC)
-166666.67 currency
Estimate to complete (ETC)
746666.67 currency
To-complete performance index (TCPI)
1.1
Percent complete
36 %
Percent spent
42 %

For the dimensions entered, expect a estimate at completion of 1166667 currency. Of the working steps, estimate to complete (etc) dominates at 746667 currency. Note that budget at completion (bac) and planned value (pv) sit at the edge of the range this calculator was checked against, so treat the output as indicative rather than settled. Set for United States against IRC 2024. The market selector changes both the units and the code cited.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • PMBOK earned value definitions: CV = EV − AC; SV = EV − PV; CPI = EV ÷ AC; SPI = EV ÷ PV
  • EAC = BAC ÷ CPI where current cost performance is expected to continue; the most commonly used of several sanctioned formulas

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

What does CPI actually tell me?
How much value you are getting per unit of money spent. A CPI of 0.857 means that for every pound spent you have earned 85.7 pence of budgeted work — you are getting about six pounds of progress for every seven you spend. Projected across the whole budget, that is where the estimate at completion comes from, and it is why a small CPI shortfall early is a large number at the end.
Why is SPI misleading late in a project?
Because it is measured in currency rather than time, and it mathematically converges to 1.0 as the work finishes. At completion, earned value equals planned value by definition — so a project delivered a year late still ends with a perfect schedule index. SPI is useful in the middle of a project and worthless at the end; time performance belongs to the schedule network.
What is TCPI for?
It is the reality check. TCPI is the cost efficiency the remaining work would have to achieve to still finish on the original budget. If your CPI is 0.86 and your TCPI is 1.12, you are being asked to believe the team will suddenly become thirty percent more efficient than it has been all project. Quantifying that gap is usually the most useful thing EVM does.
Can EVM be gamed?
Easily, and it usually is. Every index depends on earned value, and earned value depends on someone's assessment of what is complete. Optimistic percent-complete reporting produces a healthy CPI on a failing project right up until the last month. The defence is objective measures — units installed, milestones passed, tests witnessed — rather than a judgement of how far along something feels.