CPU Benchmark
Stress the processor in Web Workers with a quick or full run, live progress and score.
Private by design: every workload runs in Web Workers inside your browser. No result, device detail or identifier ever leaves this page.
This benchmark pushes your processor for a short burst, so the device may warm up and use more battery. Close heavy apps first, keep the tab visible, and cancel any time.
Choose a test length and press start. Nothing runs before that.
Benchmark any processor in under a minute
- Close heavy apps, plug in laptops if you can, and pick Quick (~12 s) or Full (~45 s).
- Press start once: single-thread workloads run first, then multi-thread in the full test.
- Watch the step and the remaining time; cancel any time with the button that never moves.
- Read the 367Tools score (0–1000), the grade, and the per-operation table.
- Compare single vs multi to see how well the browser spreads work across cores.
- Copy the result or run again after cooling down for a fairer rematch.
CPU benchmark questions
Why does my score change between runs?
Background tabs, battery saver, heat and even the browser version move the number. Run twice with the device cool and keep the best stable score, not the peak.
What does the 367Tools score mean?
A 0–1000 blend of integer, float, matrix, hash and cipher throughput on a log scale, so doubling real speed never doubles the score. It compares runs on this page, not devices in a lab.
Why is multi-thread not N times faster?
Browsers share cores with the system, and some work cannot split evenly. A gain of 2–4x on many cores is normal; near zero means the browser capped the workers.
Can this test damage my processor?
No. It is a short burst of ordinary math, like a heavy web page. The device may warm up briefly; cancel any time and let it cool before repeating.