diff --git a/Libraries/LibWeb/CSS/ComputedProperties.cpp b/Libraries/LibWeb/CSS/ComputedProperties.cpp
index 27d470bfc1d..7fcc75d3825 100644
--- a/Libraries/LibWeb/CSS/ComputedProperties.cpp
+++ b/Libraries/LibWeb/CSS/ComputedProperties.cpp
@@ -445,33 +445,6 @@ Optional<int> ComputedProperties::z_index() const
     return {};
 }
 
-float ComputedProperties::resolve_opacity_value(StyleValue const& value)
-{
-    float unclamped_opacity = 1.0f;
-
-    if (value.is_number()) {
-        unclamped_opacity = value.as_number().number();
-    } else if (value.is_calculated()) {
-        auto const& calculated = value.as_calculated();
-        CalculationResolutionContext context {};
-        if (calculated.resolves_to_percentage()) {
-            auto maybe_percentage = value.as_calculated().resolve_percentage_deprecated(context);
-            if (maybe_percentage.has_value())
-                unclamped_opacity = maybe_percentage->as_fraction();
-            else
-                dbgln("Unable to resolve calc() as opacity (percentage): {}", value.to_string(SerializationMode::Normal));
-        } else if (calculated.resolves_to_number()) {
-            auto maybe_number = value.as_calculated().resolve_number_deprecated(context);
-            if (maybe_number.has_value())
-                unclamped_opacity = maybe_number.value();
-            else
-                dbgln("Unable to resolve calc() as opacity (number): {}", value.to_string(SerializationMode::Normal));
-        }
-    }
-
-    return clamp(unclamped_opacity, 0.0f, 1.0f);
-}
-
 float ComputedProperties::opacity() const
 {
     return property(PropertyID::Opacity).as_number().number();
diff --git a/Libraries/LibWeb/CSS/ComputedProperties.h b/Libraries/LibWeb/CSS/ComputedProperties.h
index 042f3649ca2..cd7d733dd87 100644
--- a/Libraries/LibWeb/CSS/ComputedProperties.h
+++ b/Libraries/LibWeb/CSS/ComputedProperties.h
@@ -249,8 +249,6 @@ public:
 
     static NonnullRefPtr<Gfx::Font const> font_fallback(bool monospace, bool bold, float point_size);
 
-    static float resolve_opacity_value(StyleValue const& value);
-
     bool has_attempted_match_against_pseudo_class(PseudoClass pseudo_class) const
     {
         return m_attempted_pseudo_class_matches.get(pseudo_class);