Image Splitter
Size Input
Lock aspect ratio
Results
Aspect ratio1.78:1
Total pixels2,073,600 px
Uncompressed size5.93 MB
Unit conversions
Calculated at 96 DPI
UnitWidthHeight
Pixels19201080
Millimeters508.00285.75
Centimeters50.8028.57
Inches20.0011.25
Estimated sizes
FormatSize
JPG486.00 KB
PNG1.78 MB
WebP243.00 KB
GIF2.08 MB
Estimated values

Image Size Calculator

Convert between pixels, inches, centimeters and millimeters at a chosen DPI. Calculate aspect ratios and estimate uncompressed image data size.

Powerful Image Size Calculator Features

Dimension Calculator

Calculate image dimensions in pixels, inches, cm, or mm. Free image size calculator converts between units. Enter width and height to get accurate image dimension calculations.

File Size Estimator

Estimate image file sizes for JPG, PNG, WebP, and GIF formats. Image size calculator predicts compressed file sizes. Calculate storage requirements before creating images.

Aspect Ratio Calculator

Calculate image aspect ratio automatically. Image dimension calculator shows common ratios like 16:9, 4:3, 1:1. Lock aspect ratio to maintain proportions when resizing.

Unit Conversion

Convert image dimensions between pixels, inches, centimeters, and millimeters. Image size calculator handles DPI/PPI conversions. See dimensions in all units simultaneously.

Color Depth Options

Calculate file sizes for different color depths. Image calculator supports 1-bit, 8-bit, 24-bit RGB, 32-bit RGBA, and 48-bit high color. Estimate uncompressed image sizes.

How to Calculate Image Size

1

Enter Image Dimensions

Input image width and height in pixels, inches, cm, or mm. Image size calculator accepts any unit. Enter dimensions you want to calculate file size for.

2

Set DPI and Color Depth

Specify DPI/PPI resolution for print size calculations. Choose color depth (1-bit, 8-bit, 24-bit RGB, 32-bit RGBA, 48-bit). Image calculator uses these for accurate file size estimates.

3

View Calculated Results

See aspect ratio, total pixels, and uncompressed size. Image size calculator displays results in real-time. View estimated file sizes for JPG, PNG, WebP, GIF formats.

4

Check Unit Conversions

Review dimensions converted to all units. Image calculator shows pixels, mm, cm, and inches simultaneously. Use conversions for print or screen size planning.

Real examples

Image Size Calculator · Example 1

These files were processed with this tool or its shared processing code. Compare the source, settings and downloadable results.

Example 1
1800 × 1200 px300 DPI

Input

1800 × 1200 px
300 DPI
Source files (1)

ResultTXT

px
1800 × 1200
mm
152.40 × 101.60
cm
15.24 × 10.16
in
6.00 × 4.00
Download 1TXT

Image Size Calculation Tips

Lock Aspect Ratio

Enable aspect ratio lock to maintain image proportions. Image size calculator automatically adjusts height when changing width. Prevents distortion when calculating new dimensions.

Consider DPI for Print

Use 300 DPI for high-quality prints, 150 DPI for draft prints. Image calculator shows physical dimensions at different DPI values. Higher DPI requires larger pixel dimensions for same print size.

Screen vs Print Sizes

Screen images typically use 72-96 DPI. Print images need 300+ DPI. Image size calculator helps convert between screen and print dimensions for optimal quality.

Compressed vs Uncompressed

Image calculator shows uncompressed size and estimated compressed sizes. Actual file sizes vary based on image content and compression settings. Use estimates for planning purposes.

Color Depth Impact

Higher color depth increases file size. Image size calculator shows how 24-bit RGB vs 32-bit RGBA affects size. Choose appropriate color depth for your needs.

Total Pixels Matter

Total pixels (width × height) determines image detail. Image calculator shows total pixels for resolution comparison. Higher pixel counts allow larger prints or more detail.

Real examples

Image Size Calculator · More examples

These files were processed with this tool or its shared processing code. Compare the source, settings and downloadable results.

Example 2
1920 × 1080 px96 DPI

Input

1920 × 1080 px
96 DPI
Source files (1)

ResultTXT

px
1920 × 1080
mm
508.00 × 285.75
cm
50.80 × 28.57
in
20.00 × 11.25
Download 1TXT
Example 3
1080 × 1080 px300 DPI

Input

1080 × 1080 px
300 DPI
Source files (1)

ResultTXT

px
1080 × 1080
mm
91.44 × 91.44
cm
9.14 × 9.14
in
3.60 × 3.60
Download 1TXT

Image Size Calculator FAQ

An image size calculator computes image dimensions, file sizes, and resolution specifications. It converts between measurement units (pixels, inches, cm) and estimates file sizes for different formats. Free online image calculators help plan image creation and storage.
Enter image width and height in pixels, select color depth (24-bit RGB or 32-bit RGBA), and the image size calculator estimates file sizes. Results show uncompressed size and estimated compressed sizes for JPG, PNG, WebP, GIF formats.
Enter pixel dimensions and DPI/PPI value. Image size calculator converts pixels to inches using formula: inches = pixels ÷ DPI. Higher DPI values result in smaller physical dimensions for same pixel count.
Use 72-96 DPI for screen/web images, 150 DPI for draft prints, 300 DPI for high-quality prints. Image size calculator shows physical dimensions at specified DPI. Print images need higher DPI for quality.
Aspect ratio is the proportional relationship between width and height. Image calculator computes ratio by dividing width by height and simplifying. Common ratios include 16:9 (widescreen), 4:3 (standard), 1:1 (square).
Estimated sizes are approximations based on compression averages. Actual file sizes vary based on image content complexity and compression settings. Simple images compress more than complex ones. Use image calculator estimates for planning.
Total pixels = width × height. Image size calculator multiplies image dimensions to get total pixel count. Example: 1920×1080 image has 2,073,600 total pixels (2.07 megapixels). Higher pixel counts allow larger prints.
24-bit (RGB) stores red, green, blue channels (16.7 million colors). 32-bit (RGBA) adds alpha transparency channel. Image size calculator shows 32-bit images have 33% larger uncompressed sizes than 24-bit due to extra channel.
Yes! Enter pixel dimensions and set DPI to 300 for print. Image calculator converts to inches or centimeters. Ensure total pixels are sufficient for desired print size at 300 DPI for quality results.
File-size estimates are approximate. Image content, dimensions, encoder and quality settings affect the actual output. Use a real export when a strict upload limit matters.

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