---
title: "Pixel Dwell & Frame Rate calculator — AperiOptic"
description: "Dwell time and frame rate from line rate & resolution. Free online optics calculator, with the formula and code snippets."
url: "https://aperioptic.com/calculators/pixel-dwell-frame-rate"
---

# Pixel Dwell & Frame Rate calculator

Dwell time and frame rate from line rate & resolution.

Category: [Scanning](https://aperioptic.com/calculators)

Formula: `tdwell = 1/(fline·Nx) · fframe = fline/Ny (Hz)`

## Inputs

| Input | Parameter | Unit | Default |
| --- | --- | --- | --- |
| Line rate | `fline` | Hz | 8000 |
| Pixels/line | `Nx` |  | 512 |
| Lines/frame | `Ny` |  | 512 |

## Result with the default inputs

- Dwell time: 0.2441 µs
- Frame rate: 15.625 Hz

Open it with your own values: put each input in the address as a parameter, for example [`/calculators/pixel-dwell-frame-rate?fline=8000`](https://aperioptic.com/calculators/pixel-dwell-frame-rate?fline=8000). A unit other than the listed one goes in `<parameter>_unit`.

Read more: [Wikipedia: Laser scanning](https://en.wikipedia.org/wiki/Laser_scanning)

[All optics calculators](https://aperioptic.com/calculators)

---

The interactive page: https://aperioptic.com/calculators/pixel-dwell-frame-rate (AperiOptic runs in the browser; free, no account). Every page of the site as Markdown: https://aperioptic.com/llms.txt