Video Game FPS Calculator
FPS & Frame Time
Convert between FPS and frame time (ms), plus display sync info
Resolution Scaling Impact
Estimate FPS change when changing resolution
CPU/GPU Bottleneck Check
Simple check if your CPU or GPU is the bottleneck
Formula
Frame Time (ms) = 1000 / FPS | Resolution FPS estimate = Current FPS x (Current Pixels / Target Pixels) | Monitor Utilization = FPS / Refresh Rate x 100
Frequently Asked Questions
What is frame time and why does it matter?
Frame time is the time in milliseconds to render one frame. At 60 FPS, each frame takes 16.67ms. Lower frame times mean smoother gameplay. Frame time consistency matters more than average FPS; spikes cause stuttering even at high average FPS.
Does resolution affect FPS?
Yes, higher resolution means more pixels to render, which increases GPU load. Going from 1080p to 4K quadruples the pixel count, roughly halving FPS in GPU-bound scenarios. CPU-bound games are less affected by resolution changes.
What is 1% low FPS?
1% low FPS represents the worst 1% of frame times. It shows how bad your occasional stutters are. A game averaging 100 FPS with a 1% low of 20 FPS will feel worse than one averaging 80 FPS with a 1% low of 60 FPS.
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