Screen Size Comparison: The Overlay Method (2026)

Most people compare screen sizes using spec sheets and diagonal measurements. The problem? A 27-inch monitor and a 27-inch TV are radically different screens. Diagonal inches tell you almost nothing about what you will actually see. The overlay method solves this by placing two screens on top of each other at real scale — so you can see exactly where one screen ends and the other begins.

Why Diagonal Inches Mislead You

Screen sizes are measured diagonally, but screens come in different aspect ratios. A 34-inch ultrawide (21:9) is wider but shorter than a 32-inch 16:9 monitor. Both are labeled as large screens, but the actual usable area — and how it feels at your desk — is completely different.

Notice how the 34-inch ultrawide and 32-inch 16:9 have nearly the same total area (431 vs 438 sq in), but they are shaped completely differently. Specs alone do not reveal this.

What Is the Overlay Method?

The overlay method places two screens at true scale, centered on the same point. The smaller screen appears inside the larger one, and the area between them is highlighted. This lets you instantly see:

• How much extra screen you get when upgrading
• Whether the larger screen is wider, taller, or both
• The exact percentage difference in screen area
• Whether the upgrade justifies the price

You can try this right now with our free screen size comparison tool. Select two screens and click the overlay toggle.

Side-by-Side vs Overlay: Which Works Better?

Both modes have their uses. Side-by-side is great for understanding relative proportions. Overlay is better for quantifying the upgrade. Here is when to use each:

• Side-by-side — when comparing across categories (phone vs tablet, monitor vs TV)
• Overlay — when deciding whether an upgrade is worth it (24 vs 27, 55 vs 65)

For example, comparing a 6.1-inch phone to a 6.7-inch phone in overlay mode reveals that the 6.7 is 21% larger in screen area — a difference you will feel every time you read or type on it.

Real-World Upgrade Decisions

Here are the most common screen size comparisons people wrestle with, and what the overlay method reveals:

24 vs 27 Inch Monitor

The 27-inch is 27% larger in area. That is enough to fit two full-width browser windows side by side comfortably. For a 24 vs 27 monitor comparison, the overlay shows the 27 fills a meaningfully larger portion of your field of view at the same desk depth.

27 vs 32 Inch Monitor

The 32-inch is 41% larger. That is a massive jump. But it also means you need to sit further back — at least 26 inches from the screen — or pixel density drops noticeably at 1440p. Use the 27 vs 32 inch comparison to see if your desk has the depth.

55 vs 65 Inch TV

The 65-inch TV is 40% larger. In a living room at 8-10 feet, the 55 may feel too small after a few months. The 65 is the sweet spot for most rooms. See the difference with a 55 vs 65 comparison.

How to Use the Overlay Tool

1. Go to easycompare.app
2. Select your current screen size from the first dropdown
3. Select the screen you are considering upgrading to
4. Click the overlay toggle to stack both screens
5. The shaded area between them shows exactly what you gain

Common Mistakes When Comparing Screens

• Only comparing diagonal — two screens with the same diagonal can have vastly different areas depending on aspect ratio
• Ignoring desk depth — a 32-inch monitor needs at least 26 inches of desk depth for comfortable viewing
• Forgetting about resolution — a 27-inch at 1080p (82 PPI) looks blurry; at 1440p (109 PPI) it looks sharp. Size without resolution context is misleading
• Comparing across categories blindly — a 13-inch laptop screen and a 13-inch tablet are similar in size but serve completely different use cases

The overlay method eliminates all of these mistakes by showing you exactly what you get. Stop guessing from spec sheets — compare screens visually and see the real difference before you buy.