Hourly rate calculator
Calculate a minimum and target hourly rate from income, costs, billable time and a safety buffer.
Revision buffer calculator
Add a realistic cost of revision rounds and risk to a project price.
The result is a business estimate, not tax or accounting advice.
Enter assumptions
How does this calculator work?
Revisions become a predictable cost when you define the number of rounds and average time per round.
Practical use
The calculator adds revision work and an overrun reserve to the base project price.
Limitations
Separate a revision from a scope change. New functions or a new direction should be priced separately.
Frequently asked questions
Is my data uploaded?
No. Calculations run in your browser. History is stored locally on this device only.
Does the result include tax?
Taxes are not added automatically. Use one consistent basis for all inputs and account for your own tax situation.
How can I save the result?
Keep local history, copy the summary, download JSON or CSV, or print to PDF.