Three free calculators for the math on the PMP exam. Each one shows the formula, works a real example, and says where the formula comes from. No login.
Enter PV, EV, AC and BAC to get all eight results, color-coded so you can see over or under budget and ahead or behind schedule.
PMBOK 8 prints every EVM formula in Table 5-1, including four ways to calculate EAC.
Free - No loginEnter optimistic, most likely and pessimistic estimates to get the expected duration, standard deviation, variance and confidence ranges.
PMBOK 8 prints only the triangular average (O + M + P) / 3. The weighted PERT version isn’t in the guide.
Free - No loginEnter the number of people, project manager included, and see the channel count plus what happens when people join or leave.
PMBOK 8 doesn’t print this formula. It lists the number of channels as an input to communication requirements analysis.
Free - No loginFictional examples of good and bad project descriptions, plus a month counter that works the way PMI's does. Your words stay yours.
Free25 questions with a case study, instant score
Free - No loginPMI doesn’t publish a formula list, and the 2026 Exam Content Outline doesn’t name a single formula. The math sits inside tasks. In the Process domain (41 percent of the exam), Task 1 includes estimating work effort, Task 6 (Plan and manage finance) covers spend tracking and financial variations, and Task 8 (Plan and manage schedule) covers estimating tasks and analyzing schedule variation. In the People domain (33 percent), Task 8 is Plan and manage communication.
Earned value (CV, SV, CPI, SPI, EAC, ETC, VAC and TCPI), PERT three-point estimating (O + 4M + P) / 6 with standard deviation, and communication channels n(n − 1) / 2. Each calculator page explains its formula and works an example.
Only the earned value ones. PMBOK 8 prints the full EVM set in Table 5-1. For estimating it prints the triangular average (O + M + P) / 3, not the weighted PERT formula. It does not print n(n − 1) / 2; it lists the number of communication channels as an input to communication requirements analysis.
No. PMI doesn’t publish a formula list and the 2026 Exam Content Outline doesn’t name any formula. The math shows up inside tasks like Plan and manage finance, Plan and manage schedule, and Plan and manage communication.
Yes. All three are free, need no login or signup, and work on desktop and mobile.
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