FPS and frame time budget
PC / FPS
At a steady frame rate, one frame has 1000/FPS milliseconds. This reciprocal does not measure input latency, stutter or the separate CPU and GPU workloads.
Result
- Frame time (ms)
- 6.9444
Formula
ms/frame = 1000 / FPS
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Using this reference
At 60 FPS, a frame lasts about 16.67 ms; at 120 FPS, about 8.33 ms; at 144 FPS, about 6.94 ms. Doubling frame rate halves the time available for a frame. The improvement from adding 30 FPS therefore depends on your starting point.
Try your current rate and your target separately, then compare their millisecond budgets. These are steady-rate equivalents. A game can average the target FPS and still have noticeable long frames; use the frametime-sample tool when you have a log.
Sources and scope
Public source snapshot; changes after this version may differ. 2026-11-03