Reaal Online Ruler
Accurate 1:1 actual-size screen ruler in inches & cm
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This is 1 of 109 launches in specialized calculators and estimation tools — see how it stacks up on momentum and crowding →
85 other launches read as similar to this one →
Details
- External ID
- 1266446
- Source
- PH
- Company
- —
- Product
- Reaal Online Ruler
- Website domain
- producthunt.com
- Launched
- Oct. 2, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.3239751156484288
- Tags
- Design Tools, Productivity, Developer Tools
- Fetched at
- Oct. 3, 2026, 1:01 a.m.
- Updated at
- Oct. 3, 2026, 1:01 a.m.
Description
A lightweight, browser-based digital ruler that calibrates to your screen's exact pixel density. Unlike camera-based measurement apps that suffer from optical lens distortion, Reaal Online Ruler uses standard credit card geometry to produce exact 1:1 physical measurements in inches (1/16"), centimeters, and millimeters. 100% free with no app download required.
Enrichment
- Niche
- specialized calculators and estimation tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Prosumer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- 1:1 actual-size screen ruler for on-screen measurements
- Manually corrected
- False
Could you build this?
Yes Screen calibration against a known object (like an ID card) to determine CSS pixel-to-millimeter ratio is pure front-end math easily built in an afternoon.
Competitors
Other products that read as similar to this one — 85 launches clear the similarity bar, closest 8 shown.
Attention rank: #17 of 86 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 199 days after the earliest competitor.
- Easy Scale Calc · ph · 2026-10-06 · 2 upvotes · similarity 0.49
- exactimagesize · ph · 2026-09-14 · 1 upvotes · similarity 0.48
- xxxxl size · ph · 2026-09-16 · 1 upvotes · similarity 0.48
- Gauge to Millimeters · ph · 2026-10-02 · 1 upvotes · similarity 0.46
- OptiLens 3D · ph · 2026-09-24 · 1 upvotes · similarity 0.46
- Aspect Ratio Calculator · ph · 2026-09-23 · 1 upvotes · similarity 0.43
- Height Comparer · ph · 2026-10-01 · 1 upvotes · similarity 0.43
- LandScale: Plot & Area Measure · ph · 2026-09-19 · 1 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.