FPS & Frame-time Calculator
Convert FPS to frame-time (and back), and see which refresh rates your frame rate can saturate.
Quick Summary · TL;DR
Frame-time (ms) = 1000 ÷ FPS. To fully use a monitor you need FPS at least equal to its refresh rate (144 FPS for 144Hz). Smoothness depends on consistent frame-times, not just the average.
Frequently asked questions
How do I convert FPS to frame-time?
Frame-time in milliseconds equals 1000 divided by your FPS. So 144 FPS is about 6.94ms per frame, and 60 FPS is 16.67ms.
What FPS do I need for a 144Hz monitor?
You need at least 144 FPS to fully use a 144Hz panel; below that the monitor simply displays fewer unique frames. Higher and more stable is better, which is why competitive players target well above their refresh rate.
Why do pros care about frame-time, not just average FPS?
Because smoothness depends on consistent frame-times; a high average FPS with occasional long frames still stutters. Watching frame-time (and 1% lows) reveals hitching that an average hides.
Not hitting your refresh rate? Check whether your CPU or GPU is the limit with the Bottleneck Estimator.