Skip to main content

How to Calculate Load Test

What is Load Test?

A load testing metrics calculator computes throughput, response time percentiles (p50, p95, p99), and error rates from load test results. p99 latency (the response time experienced by the slowest 1% of users) is often the most important metric for user experience.

Step-by-Step Guide

  1. 1Simulate user load gradually
  2. 2Monitor system metrics
  3. 3Determine breaking point

Worked Examples

Input
Increase to 10,000 concurrent users
Result
System handles up to 8,000
CPU hits limit at 8k

Common Mistakes to Avoid

  • Wrong parameters
  • Missing adjustments

Frequently Asked Questions

What does this calculator do?

Set parameters

How do I use this calculator?

Run calculation

Ready to calculate? Try the free Load Test Calculator

Try it yourself →

Settings

PrivacyTermsAbout© 2026 PrimeCalcPro