# Online Ruler

> Free Accurate Ruler in CM, MM, Inches & Pixels (Actual Size)

---
url: "https://earlyhunt.com/project/online-ruler"
markdown: "https://earlyhunt.com/project/online-ruler.md"
type: project
name: Online Ruler
slug: online-ruler
website: "https://onscreenruler.com/"
launch_status: scheduled
launch_type: nofollow
pricing: Free
upvotes: 0
categories:
  - Developer Tools
  - AR/VR
  - UI/UX
launch_start: "2027-07-19T08:00:00.000Z"
launch_end: "2027-07-26T07:59:59.999Z"
updated: "2026-09-07T09:48:39.119Z"
maker: Andy B
maker_url: "https://earlyhunt.com/founder/andy-b"
---

## About Online Ruler

Online Ruler is a free online tool designed for measuring in inches, centimeters, millimeters, and pixels at actual size. It is particularly useful for indie founders and small teams who require precise measurements without the need for downloads or sign-ups.

## What Online Ruler does

Online Ruler allows users to calibrate their screens for real-world accuracy, enabling precise measurements directly in the browser. Users can measure physical objects by first calibrating the ruler to their specific screen size, ensuring the on-screen scale matches real-world dimensions. This tool supports various units of measurement, including inches, centimeters, millimeters, and pixels, making it versatile for different use cases.

## Who Online Ruler is for

This tool is ideal for designers, developers, and anyone needing quick and accurate measurements without the hassle of downloading software. It suits individuals who work with graphics, UI/UX design, or physical prototypes. However, those who require advanced measurement tools or specialized features may find Online Ruler insufficient for their needs.

## Pricing & access

The pricing model for Online Ruler is not specified. Users can access the tool for free via the website, with no downloads or sign-ups required.

## Key features

- Measures in inches, centimeters, millimeters, and pixels at actual size.
- Calibrates to your exact screen for real-world accuracy.
- No downloads or sign-ups required; accessible directly in the browser.
- Allows measurement of physical objects after proper calibration.
- Compatible with phones, tablets, laptops, and desktops.
- Provides tips for better measurements to enhance user experience.

## Quick answers

What is Online Ruler?

Online Ruler is a free tool that allows users to measure objects in inches, centimeters, millimeters, and pixels directly from their web browsers. It requires no downloads and offers real-world accuracy through screen calibration.

# Who is Online Ruler for?

This tool is primarily for designers, developers, and anyone needing quick measurements. It is especially beneficial for those working on UI/UX projects or physical prototypes, but may not meet the needs of users requiring advanced measurement functionalities.

How does Online Ruler pricing work?

The pricing model for Online Ruler is not specified. Users can access the tool for free without any sign-up requirements, making it an accessible option for those in need of measurement tools.

Is Online Ruler worth trying for indie founders / small teams?

Yes, Online Ruler is worth trying for indie founders and small teams looking for a straightforward, no-cost measurement tool. Its ease of use and real-time accuracy can significantly enhance productivity in design-related tasks.

## Overview

### What is it?

Free Accurate Ruler in CM, MM, Inches & Pixels (Actual Size)

### Categories

- Developer Tools
- AR/VR
- UI/UX

### How is it priced?

Free

### Launch on EarlyHunt

- Status: scheduled
- Launch tier: nofollow
- Upvotes: 0

## Screenshots / media

- Logo: https://txmhk1zrnc.ufs.sh/f/xSkWTCqmKWx9xrS2SbmKWx9ODZ6LrcpTRF51724GVhitl0IC
- Screenshot 1: https://txmhk1zrnc.ufs.sh/f/xSkWTCqmKWx9tACJ1DDMLuAFEwoJ9ZmizOgVBHr1yX5NxYph

## Links

- Listing (HTML): https://earlyhunt.com/project/online-ruler
- AI-friendly Markdown: https://earlyhunt.com/project/online-ruler.md
- Website: https://onscreenruler.com/
- Maker profile: https://earlyhunt.com/founder/andy-b
- Maker Markdown: https://earlyhunt.com/founder/andy-b.md

## Explore

- [Browse AI Projects](https://earlyhunt.com/projects)
- [Launch Stories](https://earlyhunt.com/launches)
- [Hall of Fame](https://earlyhunt.com/hall-of-fame)
- [Pricing](https://earlyhunt.com/pricing)
- [Category: Developer Tools](https://earlyhunt.com/categories/developer-tools)

_HTML version: https://earlyhunt.com/project/online-ruler_