Basic

Compression Ratio

How much smaller data becomes after compression.

Formula

CR = \frac{\text{Uncompressed size}}{\text{Compressed size}}

Variables

Uncompressed sizeOriginal data size

Compressed sizeSize after compression

Example

100 MB → 25 MB gives a 4:1 ratio

Did You Know?

Text compresses far better than already-compressed JPEG or MP4 files.

data storage it compression

Share this formula

More in Media & Data

Gross Rating Points (GRP)

Total advertising weight of a campaign against the whole audience.

Target Rating Points (TRP)

Advertising weight counted only within the specific target audience.

Television Rating (TVR)

Share of all potential viewers watching a particular programme.

Cost Per Mille (CPM)

The cost of reaching one thousand impressions.

Cost Per Rating Point (CPP)

How much it costs to buy one rating point of audience.

Click-Through Rate (CTR)

Percentage of ad views that result in a click.