Estimated concurrent users
30
Concurrency Calculator
Estimate concurrent users needed to sustain a target request rate based on average response time.
Calculator
Results
Cycle time
0.25 seconds
This is a simplified estimate based on throughput and average response time.
What this calculator does
Estimates average concurrent users required to sustain a target request rate at a given response time.
Formula
L = λ × W
concurrency = rps * response_time_secondsLittle's Law approximation: concurrency (L) equals throughput (λ) times average time in system (W).
FAQ
Is this exact for production?
No. Use it as a planning baseline and validate with real load tests.