Compression Ratio
Compression ratio compares original size with the encoded size.
Compression Ratio
Storage · 2 inputs
How to use this calculator
- Enter original size in MB.
- Enter compressed size in MB.
- Select Calculate and keep the output unit with the answer.
Before you use the answer
Write down whether a size uses decimal or binary prefixes and whether a rate counts bits or bytes. Compare the same system boundary on both sides of a performance calculation. Measured throughput is usually a more useful planning input than the maximum number on a product label.
The compressed size can exceed the original for poorly compressible data or small files.
Does it save my inputs?
No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.
Why might a result be approximate?
Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.
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