Project Estimate Calculator

Free project estimate calculator: hours × rate plus a contingency buffer and tax for a client quote.

How the project estimate calculator works

Enter your estimated hours, hourly rate, a contingency buffer and tax to get a quote total.

Base fee = hours × rate. Contingency = base × buffer%. Total = base + contingency + tax.

Example: 40 hours at 70 is 2,800; a 15% buffer adds 420 for a total of 3,220 before tax.

Projects usually take longer than expected. A buffer of 10–20% protects your margin; state clearly what the quote covers.

For information only – not financial, tax or legal advice. See our disclaimer.