UKismetMathLibrary::Conv_FloatToDouble

function Engine Deprecated Since 5.0

Deprecated: Explicit conversions between floats and doubles are not necessary. Please remove node.

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticBlueprintPure

Description

Widens a 32-bit float to a 64-bit double. This function is deprecated — UE5 unifies float and double so no explicit widening node is required.

Caveats & Gotchas

• Marked deprecated with DeprecatedFunction in UE5. Widening is implicit in C++ and the Blueprint compiler; any existing Blueprint node using this should be deleted.
• The resulting double holds the same value as the original float — widening does not recover precision that was already lost when the float was created. If accurate doubles are needed, source them as doubles from the start.
• BlueprintInternalUseOnly=true prevents this node from appearing in Blueprint search results.

Signature

static UE_INL_API double Conv_FloatToDouble(float InFloat)

Parameters

Name	Type	Description	Default
InFloat	float	The single-precision value to widen.	—

Return Type

double

Example

Widening a legacy float API result C++

float LegacyResult = SomeLegacyAPI();
double WideResult = UKismetMathLibrary::Conv_FloatToDouble(LegacyResult);
// Equivalent to: double WideResult = static_cast<double>(LegacyResult);

Version History

Introduced in: 5.0

Version	Status	Notes
5.6	deprecated	Deprecated since UE5.0 — float/double unification makes explicit conversion unnecessary.

Feedback

Was this helpful?