---
title: "Piezo Actuator Stroke & Force calculator — AperiOptic"
description: "Free stroke and blocking force from d33, voltage and stiffness. Free online optics calculator, with the formula and code snippets."
url: "https://aperioptic.com/calculators/piezo-actuator-stroke-force"
---

# Piezo Actuator Stroke & Force calculator

Free stroke and blocking force from d33, voltage and stiffness.

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

Formula: `ΔL = d33·V·N · Fb = k·ΔL`

## Inputs

| Input | Parameter | Unit | Default |
| --- | --- | --- | --- |
| d33 (pm/V) | `d33` |  | 500 |
| Voltage | `V` | V | 100 |
| # layers | `N` |  | 100 |
| Stiffness (N/µm) | `k` |  | 50 |

## Result with the default inputs

- Free stroke: 5 µm
- Blocking force: 250 N

Open it with your own values: put each input in the address as a parameter, for example [`/calculators/piezo-actuator-stroke-force?d33=500`](https://aperioptic.com/calculators/piezo-actuator-stroke-force?d33=500). A unit other than the listed one goes in `<parameter>_unit`.

Read more: [Wikipedia: Piezoelectricity](https://en.wikipedia.org/wiki/Piezoelectricity)

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

---

The interactive page: https://aperioptic.com/calculators/piezo-actuator-stroke-force (AperiOptic runs in the browser; free, no account). Every page of the site as Markdown: https://aperioptic.com/llms.txt