Image File Size Calculator

Calculate uncompressed image file sizes based on dimensions and bit depth

Image Properties

Horizontal resolution in pixels

Vertical resolution in pixels

Number of bits per pixel determines color range

Image File Size Results

6.22 MB
Uncompressed File Size
2.07M
Total Pixels
2.07 MP
24-bit
Color Depth
16.78M colors
49.77M
bits
6.22M
bytes
6220.8
KB
6.22
MB

Image Resolution: 1920 × 1080 pixels

Formula: File Size = Width × Height × Bit Depth ÷ 8

Calculation: 1920 × 1080 × 24 ÷ 8 = 6220800 bytes

Note: This is for uncompressed images. Actual file sizes vary with compression.

File Size Analysis

ℹ️ Medium file size - Suitable for print and high-quality display

Example Calculations

Full HD Photo (24-bit)

Resolution: 1920 × 1080 pixels

Bit Depth: 24-bit (16.7 million colors)

Pixel Count: 2,073,600 pixels (2.07 MP)

File Size: ~6.2 MB uncompressed

Use Case: High-quality photography, printing

Web Image (8-bit)

Resolution: 800 × 600 pixels

Bit Depth: 8-bit (256 colors)

Pixel Count: 480,000 pixels (0.48 MP)

File Size: ~468 KB uncompressed

Use Case: Web graphics, thumbnails

Bit Depth Guide

1-bit

Black & White only (2 colors)

8-bit

Grayscale or 256 colors

24-bit

True Color (16.7M colors)

32-bit

True Color + transparency

Common Resolutions

HD (720p)1280×720
Full HD (1080p)1920×1080
4K UHD3840×2160
8K UHD7680×4320
VGA640×480
SVGA800×600

Image Tips

Higher bit depth = better color quality

More pixels = larger file size

Compression can reduce file size by 70-90%

JPEG uses lossy compression

PNG uses lossless compression

Understanding Image File Sizes

What Affects File Size?

Image file size depends on two main factors: the number of pixels (resolution) and the bit depth (color information per pixel). More pixels and higher bit depth result in larger file sizes but better image quality.

Raster vs Vector Images

  • Raster: Made of pixels, size calculated by this tool
  • Vector: Made of mathematical equations, scalable
  • JPEG, PNG, GIF, BMP are raster formats
  • SVG, AI, EPS are vector formats

File Size Calculation

File Size = Width × Height × Bit Depth ÷ 8

(Result in bytes for uncompressed image)

Compression Impact

  • JPEG: 70-90% compression (lossy)
  • PNG: 20-50% compression (lossless)
  • GIF: Limited to 256 colors
  • BMP: Usually uncompressed

Practical Applications

🌐

Web Images

Optimize for fast loading, use JPEG/PNG

🖨️

Print Images

High resolution, 300 DPI recommended

📱

Mobile Apps

Multiple sizes for different screen densities