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Hz to ms Calculator

Convert monitor refresh rate to a per-frame window in milliseconds and see how much display latency each step actually removes.

Refresh rate vs frame window

Refresh rateWindowvs 60 Hz
60 Hz16.67 ms—
75 Hz13.33 ms−3.3 ms
120 Hz8.33 ms−8.3 ms
144 Hz6.94 ms−9.7 ms
165 Hz6.06 ms−10.6 ms
240 Hz4.17 ms−12.5 ms
360 Hz2.78 ms−13.9 ms
480 Hz2.08 ms−14.6 ms

Frequently asked questions

Do I need FPS as high as my refresh rate?
To use every refresh you do. With a variable refresh display, lower FPS still looks smooth — the monitor slows to match the game instead of tearing or stuttering.
Is 1 ms response time real?
Manufacturer figures come from the fastest single transition with heavy overdrive. Average grey-to-grey across all transitions is what you actually see, and it is usually several times higher.

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