DFOV to HFOV (21:9)

1 Diagonal FOV = 0.919149 Horizontal FOV · profile-dependent conversion · context: game/FOV profile

Direct Answer

1 Diagonal FOV equals 0.919149 Horizontal FOV

This result depends on the selected profile context: game/FOV profile.

For 45 Diagonal FOV, this profile returns 41.685894 Horizontal FOV.

Converter Calculator

1 Diagonal FOV (degrees) =
0.919149 Horizontal FOV (degrees)

Explanation

Formula context fixed at 21:9. DFOV converts to HFOV using trig relations on the half-angle tangent model.

Diagonal FOV to Horizontal FOV is profile-bound here: the selected game/FOV profile controls the mapping used by calculator and reference table.

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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: game/FOV profile.
  • Consistency rule: keep the same profile in mirror direction to avoid mixing incompatible mappings.

Common Conversion Values

Diagonal FOV (degrees)Horizontal FOV (degrees)
45 41.685894
60 55.90698
75 70.38947
90 85.175028
100 95.213266
110 105.399474
120 115.730987
130 126.200122