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Compression Ratio Calculator

Compression · Free Online Tool

Calculate original vs compressed size ratio and savings.

By EZ4Code TeamLast updated: 2026-10-29

Input Sizes

Original size (B)Compressed size (B)

Results

Original1.00 KB

Compressed320 B

Saved704 B

Compression Ratio3.20 : 1

Space Savings68.75%

Reduction Visualized

0%68.8% saved100%

Instant Math

Type the two sizes and the ratio, savings and reduction update live.

Visual Bar

A gradient bar shows the percentage of space saved at a glance.

Unit Flexible

Switch between Bytes, KB and MB without retyping the numbers.

How to Use Compression Ratio Calculator

1Enter or paste the text you want to compress.
2Select the compression algorithm (gzip, deflate, or brotli).
3Click compress to reduce the data size.
4Copy or download the compressed output.

Features

✓100% free — no signup, no subscription, no ads
✓Runs entirely in your browser — data never leaves your device
✓Fast and lightweight — instant results
✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

What compression algorithms are supported?

We support gzip, deflate, and brotli compression algorithms for text data.

Is there a file size limit?

Since tools run in your browser, the limit depends on your device memory. Most tools handle several megabytes without issues.

Can I decompress data produced by other software?

Yes. The decompression tools accept standard gzip, deflate, and brotli streams from any compliant source — command-line tools, web servers, or other libraries.

Why does the compressed output look unreadable?

Compressed data is binary, not text. Use Copy as Base64 or download it as a file — pasting raw compressed bytes into a text field will show garbled characters.