Output
Output will appear here
Click in the output to select all text
FPS & Frame Time Calculator
Related tools
Featured
Mouse Sensitivity & eDPI Calculator
Calculate effective DPI (eDPI) from mouse DPI and in-game sensitivity, or convert your sensitivity to a new DPI while keeping the same feel.
Edpi calculatorMouse sensitivity calculator
Featured
Video File Size Calculator
Estimate video file size from duration, video bitrate, and audio bitrate.
Video file size calculatorVideo size estimator
Featured
Comprehensive Multi-Unit Converter
Convert across 10+ categories: Length, Weight, Temperature, Area, Volume, Speed, Energy, Pressure, Power, and Data Storage.
Unit converterConversion
This calculator converts between frame rate (frames per second) and frame time (milliseconds per frame) in either direction — the two ways game and video performance are commonly measured. A frame rate of 60 FPS means each frame has about 16.7ms to render; understanding this relationship helps explain why the jump from 30 to 60 FPS feels much larger than 60 to 120 FPS, since the millisecond gains shrink as frame rate increases. Enter either value to get the other instantly. Everything runs locally in your browser. Scroll down to enter your number.
Features
- Converts FPS to frame time in milliseconds
- Converts frame time back to FPS
- Instant recalculation as you switch modes
- Useful for understanding performance benchmarks
Why use this fps & frame time calculator?
- Clarifies performance benchmarks reported in either unit
- No manual division required
- Fully private — nothing uploaded
- Free with unlimited use
Frequently asked questions
How do I convert FPS to milliseconds?
Divide 1000 (milliseconds in a second) by the frame rate — e.g. 1000 ÷ 60 ≈ 16.7ms per frame at 60 FPS.
Why does going from 30 to 60 FPS feel like such a bigger jump than 60 to 120?
Because the millisecond improvement shrinks each time: 30→60 FPS saves about 16.7ms per frame, while 60→120 FPS only saves about 8.3ms — the perceptual benefit diminishes as frame rate increases even though the FPS number doubles either way.
What frame time do I need to match my monitor's refresh rate?
Match your frame time to 1000 divided by your monitor's Hz — e.g. a 144Hz monitor benefits from frame times around 6.9ms or faster (144+ FPS) to avoid leaving performance on the table.
Does this measure my actual game's performance?
No, this is a unit converter between FPS and milliseconds; use an in-game FPS counter or benchmarking tool to measure actual performance first.
Is frame time or FPS a better performance metric?
Frame time (especially frame time consistency/variance) is often considered a more accurate measure of smoothness than average FPS, since it captures stutters that an averaged FPS number can hide.