Schedule Variance Calculator
Calculate Schedule Variance step by step: SV = EV − PV.
In short
Formula: SV = EV − PV. SV% = SV ÷ PV.
What this calculator does
Calculate Schedule Variance step by step: SV = EV − PV. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), Earned value (EV), Planned value (PV) into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this earned value calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- Earned value (EV)
- — number value.
- Planned value (PV)
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Definitions follow the PMI PMBOK Guide and the ANSI/EIA-748 earned value management standard.
Positive SV means more work has been done than planned; negative means behind plan.
SV is in money, not time, and always returns to zero at completion, so late in a project use the schedule forecast instead.
SV = EV − PV. SV% = SV ÷ PV.
Inputs used: Currency (symbol only, never converted), Earned value (EV), Planned value (PV).
Worked example
EV $175,000, PV $200,000
- SV = 175,000 − 200,000 = −$25,000 (behind schedule).
- SV% = −25,000 ÷ 200,000 = −12.5%.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Cumulative values only; enter period values yourself for period variance.
- Does not identify which tasks caused the variance.
- Loses meaning in the last part of the project, as SV tends to zero.
- Results are planning estimates built only from the figures you enter. They are not a guarantee of cost, schedule or delivery, and they do not replace your organisation's own project controls.
- The result depends on the values you enter for this schedule variance calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Common questions
Why is SV in money and not days?
Classic EVM measures schedule in budget terms. To get time, compare the dates or use the schedule forecast calculator.
Why does SV go to zero at the end?
At completion EV = PV = BAC, so SV becomes zero even if the project finished late. That is a known limitation.
Can I be ahead of schedule and over budget?
Yes. SV and CV are independent; you may be spending extra to go faster.
How do I use the Schedule Variance Calculator?
Enter the required values for Currency (symbol only, never converted), Earned value (EV), Planned value (PV). The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Schedule Variance Calculator use?
SV = EV − PV. SV% = SV ÷ PV. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the Schedule Variance Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Related tools
Calculate Planned Value step by step: PV = BAC × planned % complete at the status date.
Calculate Earned Value step by step: EV = BAC × actual % complete.
Calculate Actual Cost (Earned Value) step by step: AC = sum of all costs actually incurred for the work performed to the status date.
Calculate Budget At Completion step by step: BAC = sum of the budgets of all work packages in the performance measurement baseline.