---
title: "Aspect Ratio Calculator — Width, Height & Resolution"
description: "Calculate width, height, and matching resolutions for any aspect ratio. Presets for TikTok 9:16, YouTube 16:9, square, and cinematic."
canonical: "https://aicontentdrop.com/tools/aspect-ratio-calculator"
source: "https://aicontentdrop.com/tools/aspect-ratio-calculator"
---
Free Creator Tool

# Aspect Ratio *Calculator*

Calculate width, height, and matching resolutions for any aspect ratio. Presets for TikTok 9:16, YouTube 16:9, square, and cinematic.

Platform preset

9:16 vertical — TikTok, IG Reels, YouTube Shorts

Ratio W

Ratio H

Width (px)

●

Height (px)

**Simplified ratio**

9:16

**Decimal**

0.563

**Resolution**

1080 × 1920

**Orientation**

portrait

## Frequently asked questions

- **What is an aspect ratio?**
  
  It is the proportional relationship between width and height. 16:9 means 16 horizontal units for every 9 vertical, the standard for YouTube and TVs.
- **How do I keep the ratio when resizing?**
  
  Lock one dimension and the calculator solves for the other. We always preserve the original aspect ratio so output stays distortion-free.
- **What ratio should I use for TikTok or Reels?**
  
  9:16 vertical. TikTok and Instagram Reels both use 1080×1920 as the recommended resolution.
- **What about YouTube Shorts?**
  
  Same as TikTok — 9:16, 1080×1920. Long-form YouTube uses 16:9 (1920×1080 or 3840×2160 for 4K).
- **Can I calculate a 4K equivalent of an HD ratio?**
  
  Yes. Pick the ratio, enter the source resolution, and the calculator scales it up cleanly to 4K (or any target multiplier).
- **Does it handle anamorphic ratios like 2.39:1?**
  
  Yes. We support cinematic ratios including 2.35:1, 2.39:1, 1.85:1, 1.66:1, and the 4:3 broadcast standard.
- **What's the difference between aspect ratio and resolution?**
  
  Aspect ratio describes shape; resolution is the actual pixel count. Two videos can share a ratio (16:9) but differ in resolution (720p vs 4K).
- **Can I save my custom presets?**
  
  Anonymous use is ephemeral. Sign in to save up to 25 custom presets to your brand kit.

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