Frame Rate Calculator
Convert between frame rates and calculate frame timing
Frame Rate Conversion
Standard Frame Rates
| Frame Rate | Frame Time | Usage |
|---|---|---|
| 24 fps | 41.67 ms | Cinema, Film |
| 30 fps | 33.33 ms | TV, Streaming |
| 60 fps | 16.67 ms | Gaming, Sports |
| 120 fps | 8.33 ms | High-end Gaming |
| 144 fps | 6.94 ms | Competitive Gaming |
| 240 fps | 4.17 ms | Pro Gaming, Slow-mo |
Frame Rate — Pro Notes
3:2 Pulldown and Judder
Cinema is shot at 24 fps, but NTSC TV runs at 29.97. To bridge the gap, telecine spreads 24 frames across 60 fields using a 3:2 pattern, which introduces a repeating cadence break every 5 fields. This is the source of the 'film judder' you see on broadcast TV and on displays that skip inverse-telecine (IVTC). A 120 Hz panel can hold each 24p frame for exactly 5 refresh cycles, eliminating the judder entirely without needing pulldown at all.
VRR Hides a Minimum Refresh Floor
Variable refresh rate (VRR) via HDMI 2.1 VRR, FreeSync, or G-Sync has a lower bound — typically 48 Hz on most panels. Below that floor the display exits VRR and either drops to a fixed low rate or stutters. A game averaging 35 fps on a '1-144 Hz' VRR display will stutter just as badly as on a fixed-rate screen. LFC (Low Framerate Compensation) can double frames to stay in range, but only if the GPU driver and display both support it.
Higher FPS Doesn't Linearly Reduce Motion Blur
Going from 60 to 120 fps halves frame time and cuts sample-and-hold blur proportionally. But going from 120 to 240 fps yields a much smaller perceptual gain because pixel persistence — the duration each pixel is lit — is now the dominant blur source, not the frame cadence. Strobed backlight or MPRT-spec panels reduce pixel persistence independently of frame rate, which is why a 144 Hz strobed display can look sharper in motion than a 240 Hz panel without strobing.
Frequently Asked Questions
What is the difference between frame rate and refresh rate?
Frame rate (fps) is the number of unique frames generated by a GPU, game engine, or video codec per second. Refresh rate (Hz) is how many times the display redraws its panel per second. When they mismatch, the display either repeats frames (GPU fps < Hz, causing judder) or displays partial frames from two sources simultaneously (GPU fps > Hz, causing tearing). V-Sync caps fps to the monitor Hz; VRR dynamically adjusts the monitor Hz to match fps.
Why does cinema use 24fps and not 30fps?
24 fps was adopted in the early sound film era (1927-1930) as the minimum frame rate delivering the perception of smooth motion while minimizing film stock cost. The 0.4-ms shutter blur at 24 fps also produces a characteristic motion blur that audiences associate with cinematic quality. 30 fps (NTSC TV standard) and 25 fps (PAL) were set later for broadcast. Modern digital cinema sometimes shoots at 48 or 60 fps (HFR), which some viewers find unnaturally smooth.
What is frame time and how does it relate to fps?
Frame time is simply 1000 ÷ fps in milliseconds. At 60 fps, each frame is displayed for 16.67 ms. At 144 fps, for 6.94 ms. Frame time consistency is as important as average fps — a game averaging 144 fps but with occasional spikes to 50 ms will feel worse than a steady 60 fps. Frame time graphs (available in tools like RTSS or GPU-Z overlay) are more diagnostic than simple fps counters.
What frame rate should I use when recording gameplay for YouTube?
YouTube supports and recommends 60 fps for gaming content — it matches the monitor output and appears smooth in playback. 30 fps is acceptable for slower content but gaming motion looks noticeably juddery. YouTube re-encodes uploads, so shoot at 60 fps to provide the encoder with full temporal information. For upload file size, H.265 (HEVC) or AV1 provides roughly 40-50% better compression than H.264 at equivalent quality, allowing higher bitrate at smaller file size.
What is 23.976 fps and why is it different from 24 fps?
23.976 fps is 24000/1001 fps — a pull-down fraction introduced when 24 fps film was converted to 29.97 fps NTSC video. To distribute film on NTSC broadcast, frames were 3:2 pulled: some frames displayed for 3 video fields, others for 2, producing an effective rate of 23.976 fps that fits into the 29.97 fps NTSC frame structure without exact sync. Modern streaming platforms encode 23.976 fps separately rather than converting, and most post-production pipelines support it natively.