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Audio Buffer Latency Calculator
Compare buffer sizes and sample rates. Calculate theoretical one-buffer and two-buffer times, then copy or print the comparison.
Whole numbers: 1–8192 samples; 8000–384000 Hz.
Inputs stay on this page and clear on refresh.
Audio Buffer Latency Calculator
Buffer size: 128 samples Sample rate: 48000 Hz
- One buffer
- 2.667ms
- Two buffers
- 5.333ms
| samples | One buffer (ms) | Two buffers (ms) |
|---|---|---|
| 32 | 0.667 | 1.333 |
| 64 | 1.333 | 2.667 |
| 128 | 2.667 | 5.333 |
| 256 | 5.333 | 10.667 |
| 512 | 10.667 | 21.333 |
| 1024 | 21.333 | 42.667 |
One buffer takes samples ÷ sample rate × 1000 milliseconds. Two buffers take twice that time, assuming equal input and output buffer sizes. This is only the buffer contribution, not measured round-trip latency. Converters, drivers, safety buffers and plug-ins add latency. Use your audio system’s reported or measured latency for actual alignment. Values are calculated without intermediate rounding and displayed to three decimal places. Default: 128 samples at 48000 Hz gives 2.667 ms per buffer and 5.333 ms for two.
Methodology
How it works
One buffer takes samples ÷ sample rate × 1000 milliseconds. Two buffers take twice that time, assuming equal input and output buffer sizes. This is only the buffer contribution, not measured round-trip latency. Converters, drivers, safety buffers and plug-ins add latency. Use your audio system’s reported or measured latency for actual alignment. Values are calculated without intermediate rounding and displayed to three decimal places. Default: 128 samples at 48000 Hz gives 2.667 ms per buffer and 5.333 ms for two.
Method and assumptions documented by Techrider.live
Updated September 22, 2026
Frequently asked questions
Is this my actual round-trip latency?
No. It models one or two equal buffers only; measure the complete signal path for actual latency.
Should I always use the smallest buffer?
No. Smaller buffers reduce buffer time but can cause dropouts under load. Test your actual session and hardware; this tool does not predict stability.