Free tool
Keyboard Latency Test
Press keys on your physical keyboard. We measure the time from keydown to the next screen paint in this browser—useful for comparing setups, not raw USB lab numbers.
Last key press
—ms
Press keys to measure
Average
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Jitter
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Min
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Max
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Press keys to build a latency graph
Visual keyboard (optional reference)
Choose the layout that matches your OS keyboard. Arrows and numpad use a standard US cluster.
Latency looks good?
Run a timed test to measure real WPM and accuracy—not just how fast keys appear on screen.
Run 1-minute typing testCheck every key first
A latency spike means little if a key never registers. Use the full keyboard checker before benchmarking.
Open keyboard testWhat this measures
- • Includes OS scheduling, browser JavaScript, and paint time—not switch debounce or monitor lag alone.
- • Wired USB usually beats Bluetooth for stable, lower jitter during timed tests.
- • Jitter (inconsistency) often matters more than a single lucky low number—aim for a tight graph.
- • Close heavy tabs and disable extensions if averages stay above ~30 ms on a modern PC.
Keyboard latency guides
Articles on input delay, polling vs end-to-end latency, Bluetooth vs wired, jitter, and repeatable browser tests—written for typists who use this latency sampler.
Keyboard Latency Test Online: What Milliseconds Mean for TypingLearn what a browser keyboard latency test measures, how to read average and jitter in milliseconds, and when to trust the number before you change hardware.
How to Test Keyboard Latency in Five Repeatable StepsA practical checklist: prep the desk, isolate the browser, sample keys, log jitter, then run a timed typing test to confirm feel matched the numbers.
Keyboard Latency Tester: Free Browser Tool Before You Buy HardwareA free keyboard latency tester in the browser helps you compare cables, receivers, and busy vs idle tabs—without installing drivers or sketchy executables.
Keyboard Polling Rate vs Latency: What Matters for Typing ScoresPolling rate in Hz is not the same as end-to-end latency. Learn how each concept shows up in games vs typing benchmarks and how to avoid fake “certified Hz” claims.