UKismetMathLibrary::Quat_Euler

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Converts a quaternion into floating-point Euler angles in degrees, returned as an FVector (Pitch=Y, Yaw=Z, Roll=X). Equivalent to converting to FRotator and reading its components.

Caveats & Gotchas

• Euler angles are returned as (Roll, Pitch, Yaw) packed into (X, Y, Z) of the FVector — not the intuitive order. Verify component mapping before driving rotation widgets or UI displays.
• Gimbal lock applies: when pitch approaches ±90° the roll and yaw axes align and meaningful separate values cannot be recovered. Use the quaternion directly for any math that must survive gimbal-lock poses.

Signature

static UE_INL_API FVector Quat_Euler(const FQuat& Q);

Parameters

Name	Type	Description	Default
Q	const FQuat&	The quaternion to convert.	—

Return Type

FVector

Example

Display current rotation as degrees C++

FQuat ActorQuat = GetActorQuat();
FVector EulerAngles = UKismetMathLibrary::Quat_Euler(ActorQuat);
// EulerAngles.X = Roll, .Y = Pitch, .Z = Yaw
UE_LOG(LogTemp, Display, TEXT("Yaw: %.1f  Pitch: %.1f  Roll: %.1f"),
    EulerAngles.Z, EulerAngles.Y, EulerAngles.X);

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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