diff --git a/src/ol/format/EsriJSON.js b/src/ol/format/EsriJSON.js
index 4079d18990..5be3ad888d 100644
--- a/src/ol/format/EsriJSON.js
+++ b/src/ol/format/EsriJSON.js
@@ -5,7 +5,7 @@ import {inherits} from '../index.js';
 import _ol_Feature_ from '../Feature.js';
 import {assert} from '../asserts.js';
 import {containsExtent} from '../extent.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import JSONFeature from '../format/JSONFeature.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
@@ -84,7 +84,7 @@ EsriJSON.readGeometry_ = function(object, opt_options) {
   }
   var geometryReader = EsriJSON.GEOMETRY_READERS_[type];
   return (
-    /** @type {ol.geom.Geometry} */ FeatureFormat.transformWithOptions(
+    /** @type {ol.geom.Geometry} */ transformWithOptions(
         geometryReader(object), false, opt_options)
   );
 };
@@ -563,8 +563,7 @@ EsriJSON.prototype.readProjectionFromObject = function(object) {
 EsriJSON.writeGeometry_ = function(geometry, opt_options) {
   var geometryWriter = EsriJSON.GEOMETRY_WRITERS_[geometry.getType()];
   return geometryWriter(/** @type {ol.geom.Geometry} */(
-    FeatureFormat.transformWithOptions(geometry, true, opt_options)),
-  opt_options);
+    transformWithOptions(geometry, true, opt_options)), opt_options);
 };
 
 
diff --git a/src/ol/format/Feature.js b/src/ol/format/Feature.js
index 8bdd170b00..e8b6125540 100644
--- a/src/ol/format/Feature.js
+++ b/src/ol/format/Feature.js
@@ -163,6 +163,7 @@ FeatureFormat.prototype.writeFeatures = function(features, opt_options) {};
  */
 FeatureFormat.prototype.writeGeometry = function(geometry, opt_options) {};
 
+export default FeatureFormat;
 
 /**
  * @param {ol.geom.Geometry|ol.Extent} geometry Geometry.
@@ -170,10 +171,8 @@ FeatureFormat.prototype.writeGeometry = function(geometry, opt_options) {};
  * @param {(olx.format.WriteOptions|olx.format.ReadOptions)=} opt_options
  *     Options.
  * @return {ol.geom.Geometry|ol.Extent} Transformed geometry.
- * @protected
  */
-FeatureFormat.transformWithOptions = function(
-    geometry, write, opt_options) {
+export function transformWithOptions(geometry, write, opt_options) {
   var featureProjection = opt_options ?
     getProjection(opt_options.featureProjection) : null;
   var dataProjection = opt_options ?
@@ -218,5 +217,4 @@ FeatureFormat.transformWithOptions = function(
     transformed.applyTransform(transform);
   }
   return transformed;
-};
-export default FeatureFormat;
+}
diff --git a/src/ol/format/GML2.js b/src/ol/format/GML2.js
index 701b460c40..cbbd867b7c 100644
--- a/src/ol/format/GML2.js
+++ b/src/ol/format/GML2.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from '../index.js';
 import {createOrUpdate} from '../extent.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import GMLBase from '../format/GMLBase.js';
 import XSD from '../format/XSD.js';
 import Geometry from '../geom/Geometry.js';
@@ -295,8 +295,7 @@ GML2.prototype.writeGeometryElement = function(node, geometry, objectStack) {
       value = geometry;
     }
   } else {
-    value =
-        FeatureFormat.transformWithOptions(/** @type {ol.geom.Geometry} */ (geometry), true, context);
+    value = transformWithOptions(/** @type {ol.geom.Geometry} */ (geometry), true, context);
   }
   _ol_xml_.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
       (item), GML2.GEOMETRY_SERIALIZERS_,
diff --git a/src/ol/format/GML3.js b/src/ol/format/GML3.js
index 66a7e18c6d..9cf97206fc 100644
--- a/src/ol/format/GML3.js
+++ b/src/ol/format/GML3.js
@@ -4,7 +4,7 @@
 import {inherits} from '../index.js';
 import {extend} from '../array.js';
 import {createOrUpdate} from '../extent.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import GMLBase from '../format/GMLBase.js';
 import XSD from '../format/XSD.js';
 import Geometry from '../geom/Geometry.js';
@@ -962,8 +962,7 @@ GML3.prototype.writeGeometryElement = function(node, geometry, objectStack) {
       value = geometry;
     }
   } else {
-    value =
-        FeatureFormat.transformWithOptions(/** @type {ol.geom.Geometry} */ (geometry), true, context);
+    value = transformWithOptions(/** @type {ol.geom.Geometry} */ (geometry), true, context);
   }
   _ol_xml_.pushSerializeAndPop(/** @type {ol.XmlNodeStackItem} */
       (item), GML3.GEOMETRY_SERIALIZERS_,
diff --git a/src/ol/format/GMLBase.js b/src/ol/format/GMLBase.js
index c29818134a..85437c0868 100644
--- a/src/ol/format/GMLBase.js
+++ b/src/ol/format/GMLBase.js
@@ -7,7 +7,7 @@
 import {inherits} from '../index.js';
 import {extend} from '../array.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import XMLFeature from '../format/XMLFeature.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import LineString from '../geom/LineString.js';
@@ -205,7 +205,7 @@ GMLBase.prototype.readGeometryElement = function(node, objectStack) {
       this.GEOMETRY_PARSERS_, node, objectStack, this);
   if (geometry) {
     return (
-      /** @type {ol.geom.Geometry} */ FeatureFormat.transformWithOptions(geometry, false, context)
+      /** @type {ol.geom.Geometry} */ transformWithOptions(geometry, false, context)
     );
   } else {
     return undefined;
diff --git a/src/ol/format/GPX.js b/src/ol/format/GPX.js
index 525279b552..13a419e3b8 100644
--- a/src/ol/format/GPX.js
+++ b/src/ol/format/GPX.js
@@ -4,7 +4,7 @@
 import {inherits} from '../index.js';
 import _ol_Feature_ from '../Feature.js';
 import {includes} from '../array.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import XMLFeature from '../format/XMLFeature.js';
 import XSD from '../format/XSD.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
@@ -541,7 +541,7 @@ function readRte(node, objectStack) {
   var layout = GPX.applyLayoutOptions_(layoutOptions, flatCoordinates);
   var geometry = new LineString(null);
   geometry.setFlatCoordinates(layout, flatCoordinates);
-  FeatureFormat.transformWithOptions(geometry, false, options);
+  transformWithOptions(geometry, false, options);
   var feature = new _ol_Feature_(geometry);
   feature.setProperties(values);
   return feature;
@@ -573,7 +573,7 @@ function readTrk(node, objectStack) {
   var layout = GPX.applyLayoutOptions_(layoutOptions, flatCoordinates, ends);
   var geometry = new MultiLineString(null);
   geometry.setFlatCoordinates(layout, flatCoordinates, ends);
-  FeatureFormat.transformWithOptions(geometry, false, options);
+  transformWithOptions(geometry, false, options);
   var feature = new _ol_Feature_(geometry);
   feature.setProperties(values);
   return feature;
@@ -595,7 +595,7 @@ function readWpt(node, objectStack) {
   var coordinates = appendCoordinate([], layoutOptions, node, values);
   var layout = GPX.applyLayoutOptions_(layoutOptions, coordinates);
   var geometry = new Point(coordinates, layout);
-  FeatureFormat.transformWithOptions(geometry, false, options);
+  transformWithOptions(geometry, false, options);
   var feature = new _ol_Feature_(geometry);
   feature.setProperties(values);
   return feature;
@@ -776,8 +776,7 @@ function writeRte(node, feature, objectStack) {
   var context = {node: node, 'properties': properties};
   var geometry = feature.getGeometry();
   if (geometry) {
-    geometry = /** @type {ol.geom.LineString} */
-      (FeatureFormat.transformWithOptions(geometry, true, options));
+    geometry = /** @type {ol.geom.LineString} */ (transformWithOptions(geometry, true, options));
     context['geometryLayout'] = geometry.getLayout();
     properties['rtept'] = geometry.getCoordinates();
   }
@@ -803,7 +802,7 @@ function writeTrk(node, feature, objectStack) {
   var geometry = feature.getGeometry();
   if (geometry) {
     geometry = /** @type {ol.geom.MultiLineString} */
-      (FeatureFormat.transformWithOptions(geometry, true, options));
+      (transformWithOptions(geometry, true, options));
     properties['trkseg'] = geometry.getLineStrings();
   }
   var parentNode = objectStack[objectStack.length - 1].node;
@@ -842,7 +841,7 @@ function writeWpt(node, feature, objectStack) {
   var geometry = feature.getGeometry();
   if (geometry) {
     geometry = /** @type {ol.geom.Point} */
-      (FeatureFormat.transformWithOptions(geometry, true, options));
+      (transformWithOptions(geometry, true, options));
     context['geometryLayout'] = geometry.getLayout();
     writeWptType(node, geometry.getCoordinates(), objectStack);
   }
diff --git a/src/ol/format/GeoJSON.js b/src/ol/format/GeoJSON.js
index dce793aa7b..c209f82db2 100644
--- a/src/ol/format/GeoJSON.js
+++ b/src/ol/format/GeoJSON.js
@@ -7,7 +7,7 @@
 import {inherits} from '../index.js';
 import {assert} from '../asserts.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import JSONFeature from '../format/JSONFeature.js';
 import GeometryCollection from '../geom/GeometryCollection.js';
 import LineString from '../geom/LineString.js';
@@ -107,7 +107,7 @@ function readGeometry(object, opt_options) {
   }
   var geometryReader = GEOMETRY_READERS[object.type];
   return (
-    /** @type {ol.geom.Geometry} */ FeatureFormat.transformWithOptions(
+    /** @type {ol.geom.Geometry} */ transformWithOptions(
         geometryReader(object), false, opt_options)
   );
 }
@@ -193,8 +193,7 @@ function readPolygonGeometry(object) {
 function writeGeometry(geometry, opt_options) {
   var geometryWriter = GEOMETRY_WRITERS[geometry.getType()];
   return geometryWriter(/** @type {ol.geom.Geometry} */ (
-    FeatureFormat.transformWithOptions(geometry, true, opt_options)),
-  opt_options);
+    transformWithOptions(geometry, true, opt_options)), opt_options);
 }
 
 
diff --git a/src/ol/format/IGC.js b/src/ol/format/IGC.js
index 5bc8e137ff..98f341b117 100644
--- a/src/ol/format/IGC.js
+++ b/src/ol/format/IGC.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from '../index.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import _ol_format_IGCZ_ from '../format/IGCZ.js';
 import TextFeature from '../format/TextFeature.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
@@ -161,8 +161,7 @@ IGC.prototype.readFeatureFromText = function(text, opt_options) {
   var layout = altitudeMode == _ol_format_IGCZ_.NONE ?
     GeometryLayout.XYM : GeometryLayout.XYZM;
   lineString.setFlatCoordinates(layout, flatCoordinates);
-  var feature = new _ol_Feature_(FeatureFormat.transformWithOptions(
-      lineString, false, opt_options));
+  var feature = new _ol_Feature_(transformWithOptions(lineString, false, opt_options));
   feature.setProperties(properties);
   return feature;
 };
diff --git a/src/ol/format/KML.js b/src/ol/format/KML.js
index a35c92a8a3..e4f67db9d3 100644
--- a/src/ol/format/KML.js
+++ b/src/ol/format/KML.js
@@ -6,7 +6,7 @@ import _ol_Feature_ from '../Feature.js';
 import {extend, includes} from '../array.js';
 import {assert} from '../asserts.js';
 import {asArray} from '../color.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import XMLFeature from '../format/XMLFeature.js';
 import XSD from '../format/XSD.js';
 import GeometryCollection from '../geom/GeometryCollection.js';
@@ -1709,7 +1709,7 @@ KML.prototype.readPlacemark_ = function(node, objectStack) {
 
   var geometry = object['geometry'];
   if (geometry) {
-    FeatureFormat.transformWithOptions(geometry, false, options);
+    transformWithOptions(geometry, false, options);
   }
   feature.setGeometry(geometry);
   delete object['geometry'];
@@ -2463,8 +2463,7 @@ KML.writePlacemark_ = function(node, feature, objectStack) {
   var options = /** @type {olx.format.WriteOptions} */ (objectStack[0]);
   var geometry = feature.getGeometry();
   if (geometry) {
-    geometry =
-        FeatureFormat.transformWithOptions(geometry, true, options);
+    geometry = transformWithOptions(geometry, true, options);
   }
   _ol_xml_.pushSerializeAndPop(context, KML.PLACEMARK_SERIALIZERS_,
       KML.GEOMETRY_NODE_FACTORY_, [geometry], objectStack);
diff --git a/src/ol/format/MVT.js b/src/ol/format/MVT.js
index ed99490866..62948b96fa 100644
--- a/src/ol/format/MVT.js
+++ b/src/ol/format/MVT.js
@@ -6,7 +6,7 @@
 import {inherits} from '../index.js';
 import {assert} from '../asserts.js';
 import PBF from 'pbf';
-import FeatureFormat from '../format/Feature.js';
+import FeatureFormat, {transformWithOptions} from '../format/Feature.js';
 import FormatType from '../format/FormatType.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import GeometryType from '../geom/GeometryType.js';
@@ -322,7 +322,7 @@ MVT.prototype.createFeature_ = function(pbf, rawFeature, opt_options) {
     if (this.geometryName_) {
       feature.setGeometryName(this.geometryName_);
     }
-    var geometry = FeatureFormat.transformWithOptions(geom, false, this.adaptOptions(opt_options));
+    var geometry = transformWithOptions(geom, false, this.adaptOptions(opt_options));
     feature.setGeometry(geometry);
     feature.setId(id);
     feature.setProperties(values);
diff --git a/src/ol/format/OSMXML.js b/src/ol/format/OSMXML.js
index 6a8aa8d88c..cefa439486 100644
--- a/src/ol/format/OSMXML.js
+++ b/src/ol/format/OSMXML.js
@@ -5,7 +5,7 @@
 import {inherits} from '../index.js';
 import {extend} from '../array.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import XMLFeature from '../format/XMLFeature.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import LineString from '../geom/LineString.js';
@@ -57,7 +57,7 @@ OSMXML.readNode_ = function(node, objectStack) {
   }, OSMXML.NODE_PARSERS_, node, objectStack);
   if (!_ol_obj_.isEmpty(values.tags)) {
     var geometry = new Point(coordinates);
-    FeatureFormat.transformWithOptions(geometry, false, options);
+    transformWithOptions(geometry, false, options);
     var feature = new _ol_Feature_(geometry);
     feature.setId(id);
     feature.setProperties(values.tags);
@@ -192,7 +192,7 @@ OSMXML.prototype.readFeaturesFromNode = function(node, opt_options) {
         geometry = new LineString(null);
         geometry.setFlatCoordinates(GeometryLayout.XY, flatCoordinates);
       }
-      FeatureFormat.transformWithOptions(geometry, false, options);
+      transformWithOptions(geometry, false, options);
       var feature = new _ol_Feature_(geometry);
       feature.setId(values.id);
       feature.setProperties(values.tags);
diff --git a/src/ol/format/Polyline.js b/src/ol/format/Polyline.js
index bc04b0b29f..b7f7d51e60 100644
--- a/src/ol/format/Polyline.js
+++ b/src/ol/format/Polyline.js
@@ -4,7 +4,7 @@
 import {inherits} from '../index.js';
 import {assert} from '../asserts.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import TextFeature from '../format/TextFeature.js';
 import GeometryLayout from '../geom/GeometryLayout.js';
 import LineString from '../geom/LineString.js';
@@ -332,7 +332,7 @@ Polyline.prototype.readGeometryFromText = function(text, opt_options) {
       flatCoordinates, 0, flatCoordinates.length, stride);
 
   return (
-    /** @type {ol.geom.Geometry} */ FeatureFormat.transformWithOptions(
+    /** @type {ol.geom.Geometry} */ transformWithOptions(
         new LineString(coordinates, this.geometryLayout_), false,
         this.adaptOptions(opt_options))
   );
@@ -389,8 +389,7 @@ Polyline.prototype.writeGeometry;
  */
 Polyline.prototype.writeGeometryText = function(geometry, opt_options) {
   geometry = /** @type {ol.geom.LineString} */
-    (FeatureFormat.transformWithOptions(
-        geometry, true, this.adaptOptions(opt_options)));
+    (transformWithOptions(geometry, true, this.adaptOptions(opt_options)));
   var flatCoordinates = geometry.getFlatCoordinates();
   var stride = geometry.getStride();
   _ol_geom_flat_flip_.flipXY(
diff --git a/src/ol/format/TopoJSON.js b/src/ol/format/TopoJSON.js
index 6a19c80ed7..373e4107eb 100644
--- a/src/ol/format/TopoJSON.js
+++ b/src/ol/format/TopoJSON.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from '../index.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import JSONFeature from '../format/JSONFeature.js';
 import LineString from '../geom/LineString.js';
 import MultiLineString from '../geom/MultiLineString.js';
@@ -260,7 +260,7 @@ TopoJSON.readFeatureFromGeometry_ = function(object, arcs,
   }
   var feature = new _ol_Feature_();
   feature.setGeometry(/** @type {ol.geom.Geometry} */ (
-    FeatureFormat.transformWithOptions(geometry, false, opt_options)));
+    transformWithOptions(geometry, false, opt_options)));
   if (object.id !== undefined) {
     feature.setId(object.id);
   }
diff --git a/src/ol/format/WKT.js b/src/ol/format/WKT.js
index 7b49365ac6..fc5a4b3487 100644
--- a/src/ol/format/WKT.js
+++ b/src/ol/format/WKT.js
@@ -3,7 +3,7 @@
  */
 import {inherits} from '../index.js';
 import _ol_Feature_ from '../Feature.js';
-import FeatureFormat from '../format/Feature.js';
+import {transformWithOptions} from '../format/Feature.js';
 import TextFeature from '../format/TextFeature.js';
 import GeometryCollection from '../geom/GeometryCollection.js';
 import GeometryType from '../geom/GeometryType.js';
@@ -331,7 +331,7 @@ WKT.prototype.readGeometryFromText = function(text, opt_options) {
   var geometry = this.parse_(text);
   if (geometry) {
     return (
-      /** @type {ol.geom.Geometry} */ FeatureFormat.transformWithOptions(geometry, false, opt_options)
+      /** @type {ol.geom.Geometry} */ transformWithOptions(geometry, false, opt_options)
     );
   } else {
     return null;
@@ -408,7 +408,7 @@ WKT.prototype.writeGeometry;
  */
 WKT.prototype.writeGeometryText = function(geometry, opt_options) {
   return WKT.encode_(/** @type {ol.geom.Geometry} */ (
-    FeatureFormat.transformWithOptions(geometry, true, opt_options)));
+    transformWithOptions(geometry, true, opt_options)));
 };