HFOV to DFOV (21:9)

1 Horizontal FOV = 1.087963 Diagonal FOV · profile-dependent conversion · context: game/FOV profile

Direct Answer

1 Horizontal FOV equals 1.087963 Diagonal FOV

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

For 45 Horizontal FOV, this profile returns 48.517506 Diagonal FOV.

Converter Calculator

1 Horizontal FOV (degrees) =
1.087963 Diagonal FOV (degrees)

Explanation

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

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

Common Conversion Values

Horizontal FOV (degrees)Diagonal FOV (degrees)
45 48.517506
60 64.269013
75 79.712074
90 94.824972
100 104.717283
110 114.46996
120 124.09302
130 133.59963