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Free Smart Contract Audit Cost Calculator

Estimate the cost and timeline of a smart contract security audit based on lines of code, protocol complexity, total value locked, and audit firm tier. Models the 2026 market for top firms (Trail of Bits, OpenZeppelin, ChainSecurity, Spearbit) and mid-tier (Hacken, CertiK, Quantstamp). Includes recommendations for crowdsourced contests (Code4rena, Sherlock, Cantina) for additional coverage.

Inputs

%

Results

Complexity-Adjusted LOC

3,750

Estimated Audit Duration (Weeks)

8

Total Auditor-Weeks

15

Base Audit Cost

$210,000

Rush Premium Adjustment

$0

Public Contest Cost (if added)

$18,750

Total Audit + Contest Cost

$228,750

Audit Cost as % of TVL

0.5%

Cost per LOC

$92

By David Shadrake · Free, no signup required

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About the Author

David Shadrake

David Shadrake works on strategic business development and tech partnerships, with focus areas across AI, fintech, venture capital, growth, sales, SEO, blockchain, and broader tech innovation. Read more of his perspective on partnerships, market dynamics, and emerging technology at davidshadrake.com.