Aspect Ratio Calculator

5:4
Current Aspect Ratio
Quick Select
Custom Input
×
:

Editing Dimensions — preview reflects exact width × height; ratio is detected from your input.

CSS
aspect-ratio: 16 / 9;

Smart Ratio Simplifier

×

CSS Code Generator

Production-ready CSS for responsive 5:4 containers:

CSS / HTML
/* Responsive aspect ratio container */
.ratio-box {
  aspect-ratio: 16 / 9;
  width: 100%;
  overflow: hidden;
}

/* With object-fit for images/video */
.ratio-box img,
.ratio-box video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

Live Visual Preview

16:9 1920 × 1080

Preview animates as you calculate

16:9 aspect ratio Landscape 1920 × 1080
For every 16 units of width, the height is 9 units. The longer side is capped at 1920px, so this ratio resolves to 1920 × 1080 — the conventional Full HD size used across most platform presets.
Why 1920 on the long side? It's the standard Full HD reference width/height used by social, video, and screen presets, which keeps Quick Select results consistent with the Platform & Device Presets below.

Platform & Device Presets

Instagram
Post (Square)
1080 × 1080
Instagram
Portrait Post
1080 × 1350
Instagram
Reel / Story
1080 × 1920
TikTok
Vertical Video
1080 × 1920
Snapchat
Story
1080 × 1920
Facebook / X
Link Preview
1200 × 630
Pinterest
Standard Pin
1000 × 1500
LinkedIn
Banner
1584 × 396
YouTube
Thumbnail (HD)
1280 × 720
YouTube
1080p Video
1920 × 1080
YouTube / Netflix
4K UHD
3840 × 2160
YouTube
Shorts
1080 × 1920
Twitch
Stream
1920 × 1080
Ultrawide
UWFHD
2560 × 1080
Ultrawide
UWQHD
3440 × 1440
Desktop
Full HD
1920 × 1080
Desktop
2K / QHD
2560 × 1440
Desktop
4K UHD
3840 × 2160
iPad
iPad Retina
2048 × 1536
Ultrawide
UWFHD
2560 × 1080
Samsung
Odyssey Neo G9
5120 × 1440
iPhone 14
Screen
390 × 844
DSLR (24MP)
Full-Frame RAW
6000 × 4000
DSLR
6MP Export
3000 × 2000
Print
4×6" @300DPI
1200 × 800
Print
8×12" @300DPI
2400 × 1600
Print
8×10" @300DPI
2400 × 1920
Micro 4/3
MFT Camera
3000 × 2250

Common 5:4 Resolutions

ResolutionCategoryUsage

5:4 Aspect Ratio Calculator — Complete Creator Guide

The 5:4 aspect ratio appears in medium format photography (Hasselblad, Phase One), traditional 8×10" prints, and early computer displays. It delivers a distinctive, classic aesthetic favored by fine art photographers and print professionals.

The 5:4 ratio has two distinct lives. In photography, it defines large format view cameras (the 4×5" and 8×10" formats beloved by Ansel Adams and fine art photographers worldwide). In computing, it defined the 1280×1024 monitor — the dominant resolution of office workstations throughout the 2000s — creating a brief digital era for this otherwise photographic format.

Common Uses

Medium format cameras (Hasselblad, Phase One), 8×10" prints, 5×4" large format photography, fine art printing, early LCD monitors (1280×1024).

Supported Platforms

Hasselblad Phase One Large format film photography Fine art print labs

Safe Zone Guide

Safe Zone: For 8×10" fine art prints at 300 DPI, use 2400×1920 px. For 16×20" prints, use 4800×3840 px.

Pro Creator Tip

The 8×10" print size is a perfect 5:4 ratio. If you shoot medium format or large format film photography, compose for 5:4 to avoid cropping when printing at standard art print sizes.

CSS Aspect Ratio

CSS
aspect-ratio: 5 / 4;
width: 100%;
height: auto;

Apply this CSS to any element to lock it to the 5:4 ratio. Supported in Chrome 88+, Firefox 89+, Safari 15+, and Edge 88+.

5:4 vs Other Ratios

Best 5:4 Resolutions & Use Cases

Resolution Format Best For Copy
1280×1024 SXGA Monitor Classic LCD office monitor Copy
2400×1920 5:4 HD Scaled monitor content Copy
3000×2400 Med. Format Digital medium format Copy
4000×3200 Hi-Res 5:4 Phase One / Hasselblad Copy
2400×1920 8×10" @300DPI Fine art print at 300 DPI Copy
1500×1200 5×4" @300DPI Large format print at 300 DPI Copy

How to Use the 5:4 Calculator

For large format photography: load film in 5×4" or 8×10" holders and compose on the ground glass
For digital: set crop to 5:4 in your camera's shooting aspect ratio (if available)
For print: multiply desired print inches by 300 DPI (8×10 = 2400×1920 px)
For legacy monitor content: 1280×1024 is the native 5:4 resolution

Frequently Asked Questions — 5:4

What cameras use 5:4?
Medium format cameras from Hasselblad and Phase One often use 5:4. Classic large format cameras (4×5" and 8×10" field cameras) use this ratio natively.
What print size is 5:4?
5:4 corresponds to 8×10" prints — one of the most popular fine art and portrait photography print sizes. Also 5×4" and 10×8" prints.
Is 5:4 the same as 1.25:1?
Yes. 5 ÷ 4 = 1.25, so 5:4 can also be expressed as 1.25:1. It's slightly wider than a perfect square (1:1) but noticeably squarer than 4:3 (1.33:1).
Where is 5:4 used in technology?
Early 19-inch and 20-inch CRT and LCD computer monitors used a 5:4 native resolution of 1280×1024 px, which was the standard office display before widescreen became dominant.
Who uses 5:4 format today?
Fine art photographers, large format film photographers, and some commercial print professionals still work in 5:4. Medium format digital backs from Phase One and Hasselblad often support this ratio.
What is 5:4 in landscape orientation?
5:4 in landscape is wider than tall — 5 units wide and 4 units tall. The 1280×1024 monitor is a classic example. In portrait, it becomes 4:5 orientation.

What Is an Aspect Ratio? Complete Guide for Creators in 2026

An aspect ratio is the proportional relationship between the width and height of an image, video, or display. It's expressed as two numbers separated by a colon — for example, 16:9 means the width is 16 units and the height is 9 units. The actual pixel dimensions can vary infinitely, but the proportion stays constant.

Why Aspect Ratios Matter for Content Creators

Choosing the wrong aspect ratio is one of the most common mistakes in digital content creation. Upload a 16:9 video to TikTok and it shrinks into a tiny rectangle surrounded by black bars. Post a 3:2 photo to Instagram expecting a natural crop and you'll be surprised by what gets cut. Understanding aspect ratios lets you shoot, edit, and export content that looks exactly right on every platform — and understanding how to convert between them is what separates amateur and professional output.

Platform Aspect Ratio Quick Reference

PlatformRatioOptimal ResolutionUse Case
YouTube16:91920×1080 / 3840×2160Videos & thumbnails
TikTok9:161080×1920Vertical video
Instagram Reels9:161080×1920Vertical video
Instagram Post1:1 / 4:51080×1080 / 1080×1350Feed posts
DSLR Camera3:2Varies (6000×4000 typical)Photography
iPad4:32048×1536 / 2360×1640Tablets
Ultrawide Monitor21:93440×1440Gaming & design
Super Ultrawide32:95120×1440Samsung Odyssey

How to Calculate Aspect Ratio from Pixels

To find the aspect ratio of any resolution, divide both width and height by their Greatest Common Divisor (GCD). For 1920×1080: the GCD is 120. Divide: 1920÷120=16, 1080÷120=9. Result: 16:9. Our Smart Ratio Simplifier above does this calculation instantly for any resolution you enter.

Aspect Ratio in Responsive Web Design

Modern CSS makes it simple to lock elements to a specific aspect ratio using the aspect-ratio property. This ensures videos, images, and UI containers maintain their proportions at all screen widths. Previously developers used the "padding-top percentage hack," but the CSS aspect-ratio property (supported since 2021 in all major browsers) is the clean, modern approach.

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