Megapixels to MB at JPEG web quality 70

1 Image size = 0.18 File size · profile-dependent conversion · context: encoding/quality profile

Direct Answer

1 Image size equals 0.18 File size

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

For 2 Image size, this profile returns 0.36 File size.

Converter Calculator

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

Explanation

JPEG web quality 70 assumes 180000 bytes per megapixel. MB = MP x (180000 / 1,000,000). With input 1 MP, output is 0.18 MB.

For Image size to File size, the active encoding/quality profile determines the conversion constants applied to every value.

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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 0.18
2 0.36
5 0.9
10 1.8
12 2.16
16 2.88
24 4.32
36 6.48
48 8.64
64 11.52
100 18
500 90
1,000 180