How is audio buffer latency calculated?

Latency (ms) = (Buffer Size in samples / Sample Rate in Hz) × 1000. For example, a 256-sample buffer at 44,100 Hz = 256 / 44100 × 1000 ≈ 5.8 ms one-way.

What is round-trip latency?

Round-trip latency is the total delay from when a sound enters your audio interface (input) to when you hear it through your monitors (output). It is roughly twice the one-way buffer latency, though drivers and converters add a small fixed overhead on top.

What latency is acceptable for recording?

Most musicians find latency under 10 ms acceptable for software monitoring while recording. Below 5 ms is nearly imperceptible. Above 20 ms starts to feel like an audible echo and should be reduced by lowering the buffer size.

Does a higher sample rate reduce latency?

Yes. At the same buffer size, doubling the sample rate halves the latency. A 256-sample buffer at 96 kHz gives ~2.7 ms — about half the latency of the same buffer at 44.1 kHz (~5.8 ms).

Why is my actual DAW latency higher than this calculator shows?

This calculator shows the theoretical buffer latency only. Your actual round-trip latency includes driver overhead, converter delay (typically 1–3 ms per direction), and any plugin processing delay (PDC). The DAW's reported latency value accounts for all of these.

What buffer size should I use for mixing vs. recording?

For recording with software monitoring, use the lowest buffer your CPU can sustain without dropouts — usually 64 to 256 samples. For mixing when no live input is needed, 512 to 1024 samples reduces CPU spikes without any perceptible latency cost.

Sample Rate Latency Calculator

Name: Sample Rate Latency Calculator
Availability: InStock
Author: Nham Vu

Enter your buffer size and sample rate to instantly calculate input, output, and round-trip latency in milliseconds.

Audio Interface Settings

Sample Rate (Hz)

Buffer Size (samples)

Driver / Converter Overhead (optional, per direction)

Typical ASIO/CoreAudio overhead is 1–3 ms. Leave at 0 for theoretical values.

Input Latency

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Round-Trip

—

ms total

Output Latency

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Buffer Size Comparison

At current sample rate — click row to apply

Buffer (samples)	One-Way (ms)	Round-Trip (ms)	Best For

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Summary

Enter your buffer size and sample rate to instantly calculate input, output, and round-trip latency in milliseconds.

How it works

Select or enter your audio interface sample rate (e.g. 44100, 48000, 96000 Hz).
Select or enter your DAW buffer size in samples (e.g. 64, 128, 256, 512).
The calculator divides buffer size by sample rate to get one-way latency in seconds, then converts to milliseconds.
Round-trip latency is double the one-way figure (input + output path).
The table updates instantly so you can compare multiple buffer/rate combinations.

Use cases

Find the lowest buffer size your CPU can handle without audio dropouts.
Calculate round-trip latency for comfortable software instrument recording.
Decide whether to track at 44.1 kHz or 96 kHz for a given buffer size.
Verify that your setup meets a target latency under 10 ms for live performance.
Compare latency across different audio interfaces with varying I/O overhead.
Explain latency trade-offs to clients or band members in plain millisecond values.
Optimize a podcast or broadcast rig for minimal monitoring delay.
Confirm ASIO/CoreAudio settings match the latency reported by your DAW.

Frequently Asked Questions

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Last updated: 2026-05-29 · Reviewed by Nham Vu