Run JavaScript speed benchmarks across five workloads with ops/sec scores. Prove which device runs faster — local measurement, free, no signup.
Content reviewed October 2026 · About Toolzum
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Integer math, floating point, array sorting, string ops, and a mixed workload — each for the seconds you set (1–5s). No custom snippets or warmup settings.
Operations per second with a speed ranking: higher wins. Compare relative gaps, not absolute numbers across machines.
Micro-benchmarks mislead when the hot path differs — profile real usage first, benchmark only proven bottlenecks.
No — benchmarks run locally in your browser. Nothing leaves your device.
30,000 ops/s: Fast starts at 15,000 (about 75th percentile), Very Fast at 30,000 (about 90%), Extreme at 60,000 (about 99%). Runs last 1-5s in 0.5s steps; history keeps the last 20 runs.