KEVOS® WORKOS · Decide
Change Impact Assessment
How disruptive is this proposed change?
Assesses a proposed change by its added cost, schedule effect, risk and quality impact against the benefit it brings.
Open the calculatorRuns in your browser. No account needed.
How this tool works
Inputs, units and where to find them
| Input | Unit | Typical source |
|---|---|---|
| Additional cost | $ | Estimate of the change’s added cost |
| Current project or process value | $ | Current approved budget or process value |
| Schedule impact | days | Schedule extension caused by the change |
| Remaining schedule | days | Remaining approved schedule |
| Risk increase | 1–5 score | Rating of risk increase (1 small, 5 large) |
| Quality impact | 1–5 score | Rating of quality or compliance impact (1 small, 5 large) |
| Expected benefit | $ | Benefit estimate in the change request |
Method and formulas
- Impact = 0.25 × cost increase % + 0.25 × schedule increase % + 25 × risk ÷ 5 + 25 × quality ÷ 5, limited to 0–100
- LOW below 30, MODERATE 30–59, HIGH 60 or more
Limitations
- Percentages above 100% saturate the score
- Fixed weights
- Does not check contract or authority to approve
Typical uses
- Change requests on projects
- Engineering change proposals
- Process changes that affect cost or delivery
Who it is for
- Project managers
- Engineering change boards
- Quality managers
What you get
- LOW, MODERATE or HIGH impact
- Impact score out of 100
- Benefit minus added cost
Interpreting the result
- High quality impact needs engineering or quality sign-off whatever the score
- Approve only when the benefit justifies cost, schedule and risk together
References
- PMI, A Guide to the Project Management Body of Knowledge (PMBOK Guide), integrated change control
WORKOS tools are screening and decision-support utilities. Verify important financial, engineering, safety, legal or operational decisions using appropriate professional standards and your organisation’s approved data.
