Frame Time vs FPS
Gamers often optimize for average FPS or high Hz, but the most critical metric for smoothness is Frame Time (ms). A steady 60 FPS (16.67ms per frame) feels smoother than a fluctuating 100 FPS bouncing between 10ms and 30ms.
Performance Tool
Hz & FPS Calculator
Analyze the relationship between your monitor's refresh rate and in-game framerate to optimize input lag, eliminate screen tearing, and achieve perfect frame pacing.
Input Settings
Frame Pacing Timeline
MONITOR (Hz)
GPU (FPS)
Frame Time (GPU)
4.17 ms
Your GPU generates a new frame every 4.17ms.
Scanout Duration (Hz)
6.94 ms
Sync Status
Screen Tearing
Engine Latency
~2.08 ms
Optimal FPS Cap
141 FPS
Analysis
Because your FPS (240) exceeds your monitor's refresh rate (144Hz), the GPU is sending frames faster than the screen can draw them. This results in screen tearing unless V-Sync is enabled (which adds input lag).
How to Use
- Enter your monitor's Refresh Rate (Hz) and average in-game FPS.
- Read the precise frame time and scanout duration calculations.
- Review the Sync Status analysis for screen tearing or stutter risk.
Pro tip: Cap FPS slightly below your monitor's max Hz (e.g., 141 FPS on 144Hz) to keep G-Sync/FreeSync active without triggering V-Sync input lag.
Frequently Asked Questions
How do you calculate frame time from FPS?
Divide 1000 by your FPS. Example: 1000 / 60 FPS = 16.67ms frame time.
Should my FPS match my monitor's Hz?
With G-Sync/FreeSync, cap FPS about 3 frames below your max Hz (e.g., 141 FPS on 144Hz) to prevent V-Sync lag.
What causes screen tearing?
Tearing occurs when your GPU renders frames faster than your monitor displays them (FPS > Hz), showing pieces of multiple frames simultaneously.
Frequently Asked Questions
What is the difference between Hz and FPS?
Hz is how many times your monitor refreshes per second. FPS is how many frames your GPU renders. Ideally both should match for smooth visuals.
Is 144Hz noticeably better than 60Hz?
Yes. The jump from 60Hz to 144Hz is very noticeable in fast-paced games, reducing motion blur and improving responsiveness by ~10ms.
Does higher Hz reduce input lag?
Yes. At 60Hz each frame takes 16.67ms. At 240Hz it takes 4.17ms. This reduces the delay between GPU rendering and display output.