With the illustrative inputs below, the result is 540 .
Try this with your own numbersFormula and worked example
Revision cost = rounds × people × hours × hourly cost
| Input | Example |
|---|---|
| Extra revision rounds | 3 |
| People involved per round | 2 |
| Hours per person per round | 2 |
| Loaded hourly cost | 45 |
| Calculated result | 540 |
Choose reliable inputs
Include software licences, delivery time, revisions and ongoing support when costing a project. For this web design calculation, use project time logs, licence invoices and retainer scopes and a consistent definition of one project.
- Design hours: include the portion belonging to this project or reporting period, and record where the value came from.
- Development: include the portion belonging to this project or reporting period, and record where the value came from.
- Revisions: include the portion belonging to this project or reporting period, and record where the value came from.
Use the same currency for every money input. Do not mix weekly costs with monthly revenue, or count the same expense in both an itemised cost and allocated overhead.
How much does one more revision round cost?
Include coordination in recorded hours and do not assume extra rounds are contractually billable.
What if this input changes?
If extra revision rounds rises by 10%, this example changes by 54 . This shows the effect of one change; it does not predict what will happen.
Open the calculator, save your baseline, then change the input supported by the least reliable estimate in your records. Compare both scenarios before committing to a price or capacity promise.