Benchmark.js
High-resolution timers for statistically significant benchmarking results.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Verified · Jul 12, 2026Overview
What is Benchmark.js?
Benchmark.js is a JavaScript library that provides high-resolution timers and returns statistically significant results. It's useful for developers who need to measure the performance of their code accurately.
Key differentiator
“Benchmark.js stands out with its focus on providing statistically significant and precise timing measurements, making it ideal for developers who need to ensure their performance tests are both accurate and reliable.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Benchmark.js primarily focuses on standalone JavaScript benchmarking and lacks built-in support for integration with popular CI/CD pipelines or monitoring systems.
Setting up comprehensive benchmarks that account for various environmental factors can be complex and requires a deep understanding of the library's API and statistical methods.
The high-resolution timers used by Benchmark.js can introduce some performance overhead, which may skew results in low-power or heavily loaded systems.
Fit analysis
Who is it for?
✓ Best for
JavaScript developers who need precise and reliable benchmarking results for their applications.
Teams working on performance-critical JavaScript projects that require accurate timing measurements.
✕ Not a fit for
Projects requiring real-time or near-real-time performance monitoring, as Benchmark.js is more suited for offline testing scenarios.
Applications where the overhead of high-resolution timers might impact the benchmarking results themselves.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Integrations
Next step
Get Started with Benchmark.js
Step-by-step setup guide with code examples and common gotchas.