Megapixels to MB at PNG RGBA 8-bit

1 Image size = 2.8 File size · profile-dependent conversion · context: encoding/quality profile

Direct Answer

1 Image size equals 2.8 File size

This result depends on the selected profile context: encoding/quality profile.

For 2 Image size, this profile returns 5.6 File size.

Converter Calculator

1 Image size (megapixels) =
2.8 File size (MB)

Explanation

PNG RGBA 8-bit assumes 2800000 bytes per megapixel. MB = MP x (2800000 / 1,000,000). With input 1 MP, output is 2.8 MB.

From Image size to File size, results depend on the selected encoding/quality profile and stay consistent with that profile across table rows and calculator input.

Read more

Keep the same profile in both directions to avoid mixing lookup systems that use different size mappings.

Method & Reference (Verified)

  • Method basis: profile-bound mapping; constants depend on the selected profile encoded in the route.
  • Profile reference: encoding/quality profile.
  • Consistency rule: keep the same profile in mirror direction to avoid mixing incompatible mappings.

Common Conversion Values

Image size (megapixels)File size (MB)
1 2.8
2 5.6
5 14
10 28
12 33.6
16 44.8
24 67.2
36 100.8
48 134.4
64 179.2
100 280
500 1,400
1,000 2,800