diff --git a/.chloggen/remove-tp-metric-context-fg.yaml b/.chloggen/remove-tp-metric-context-fg.yaml
new file mode 100644
index 0000000000000..7f529dcd111f0
--- /dev/null
+++ b/.chloggen/remove-tp-metric-context-fg.yaml
@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. receiver/filelog)
+component: processor/transform
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Remove the `processor.transform.ConvertBetweenSumAndGaugeMetricContext` feature gate.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [47358]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: This feature gate has been stable for over a year and is no longer used in any code paths.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []
diff --git a/processor/transformprocessor/internal/metrics/functions.go b/processor/transformprocessor/internal/metrics/functions.go
index 86a0f3902ec11..1cc131bcec2e3 100644
--- a/processor/transformprocessor/internal/metrics/functions.go
+++ b/processor/transformprocessor/internal/metrics/functions.go
@@ -6,21 +6,12 @@ package metrics // import "github.com/open-telemetry/opentelemetry-collector-con
 import (
 	"maps"
 
-	"go.opentelemetry.io/collector/featuregate"
-
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/contexts/ottldatapoint"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/contexts/ottlmetric"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl/ottlfuncs"
 )
 
-var UseConvertBetweenSumAndGaugeMetricContext = featuregate.GlobalRegistry().MustRegister(
-	"processor.transform.ConvertBetweenSumAndGaugeMetricContext",
-	featuregate.StageStable,
-	featuregate.WithRegisterDescription("When enabled will use metric context for conversion between sum and gauge"),
-	featuregate.WithRegisterToVersion("v0.114.0"),
-)
-
 func DataPointFunctions() map[string]ottl.Factory[*ottldatapoint.TransformContext] {
 	functions := ottlfuncs.StandardFuncs[*ottldatapoint.TransformContext]()