A clear result in a few inputs.
- Enter the requested values.Use consistent units and the real values for your scenario.
- Read the main result and breakdown.NumLuma recalculates immediately when an input changes.
- Check the formula and assumptions.Use the supporting context before making a real-world decision.
What this calculator does
Project pricing can start with an hourly model and then add a contingency for uncertainty. NumLuma separates the estimated labor value from the buffer so you can see how much of the quote comes from planned work and how much covers scope or time risk.
What to know before you use the result
- The hourly rate should already reflect the compensation and business costs you intend to recover.
- A contingency buffer is not a substitute for a clearly defined project scope.
- Fixed-price work transfers more estimation risk to the freelancer or contractor than pure hourly billing.
Common mistakes to avoid
- Using only hands-on production hours and forgetting meetings, revisions or administration.
- Adding a contingency without defining what it is meant to cover.
- Comparing the quoted total with employee wages instead of a business billing rate.
Where this calculation is useful
Freelance proposalsContract workAgency estimatesProject budgeting
Related concepts
project quotefreelance pricinghourly billingcontingency buffer