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Estimate your display's refresh rate

Frame timestamps collected for four seconds while this tab stays visible — a median-interval estimate of the display pipeline, with every caveat that keeps it honest.
idle — a run takes four secondsMeasure

Press Measure — the run takes four seconds during which the tab must stay visible.

- requestAnimationFrame timestamps measure the browser-compositor pipeline, not the panel directly — hidden tabs, battery saver, and off-screen windows throttle rAF, which only lowers the honest ceiling of the estimate.
- The median resists dropped frames; long frames are counted and disclosed instead of averaged away, and a sample with a wide spread is flagged rather than smoothed.
- No benchmark claims: no latency numbers, no cross-device comparison, no "gaming performance" story — those need a methodology this page does not have.
- Odd panels quantize (a 59.94 Hz display reads ~60) — a rate within 2% of a common one is labeled "consistent with", never declared identical.
Nothing in yet

Paste, drop, or type to begin. Everything stays on this device.

measurement runs on your click, for four seconds, in this tab

Next door in Device

- Dead pixel test (/device/dead-pixel)
- Screen & viewport (/browser/screen)
All device tools (/device)

Canonical HTML: https://nutter.tools/device/refresh-rate
Markdown version: https://nutter.tools/device/refresh-rate/index.md
Plain-text version: https://nutter.tools/device/refresh-rate/index.txt
Agent index: https://nutter.tools/llms.txt