Scenario 1
Small website build
40h estimate, 20% contingency, $80/hr, 15% margin → $4,416.
Estimate hours, add a contingency buffer, and price projects with a margin you can defend.
Results update instantly as you type or drag.
Buffer for scope creep and unknowns
Quick insights
Adjusted hours
48 h
Base cost
$3,840
Margin amount
$576.00
Quick answer
Estimate the hours, add a contingency for unknowns, multiply by your hourly rate, then add a margin.
How it works
A quick walkthrough of what this calculator does behind the scenes.
Contingency — covers scope drift and unexpected work (typically 15–25%)
Profit margin — turns a break-even quote into a profitable project
Formula
No black box — here's exactly how the result is computed.
Adjusted hours = Estimated hours × (1 + Contingency %)
Base cost = Adjusted hours × Hourly rate
Quote = Base cost × (1 + Margin %)Examples
See how the numbers play out for typical use cases.
Scenario 1
40h estimate, 20% contingency, $80/hr, 15% margin → $4,416.
Scenario 2
80h estimate, 25% contingency, $120/hr, 20% margin → $14,400.
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