diff --git a/poi/src/main/java/org/apache/poi/ss/util/CellAddress.java b/poi/src/main/java/org/apache/poi/ss/util/CellAddress.java
index 197cc0e5c2..06add8711e 100644
--- a/poi/src/main/java/org/apache/poi/ss/util/CellAddress.java
+++ b/poi/src/main/java/org/apache/poi/ss/util/CellAddress.java
@@ -171,4 +171,13 @@ public class CellAddress implements Comparable<CellAddress> {
     public String formatAsString() {
         return CellReference.convertNumToColString(this._col)+(this._row+1);
     }
+
+    /**
+     * @return R1C1-style cell address string representation
+     * @see #formatAsString()
+     * @since POI 5.2.1
+     */
+    public String formatAsR1C1String() {
+        return new CellReference(_row, _col).formatAsR1C1String();
+    }
 }
diff --git a/poi/src/test/java/org/apache/poi/ss/usermodel/BaseTestCellComment.java b/poi/src/test/java/org/apache/poi/ss/usermodel/BaseTestCellComment.java
index 25bd602c51..4dde615f64 100644
--- a/poi/src/test/java/org/apache/poi/ss/usermodel/BaseTestCellComment.java
+++ b/poi/src/test/java/org/apache/poi/ss/usermodel/BaseTestCellComment.java
@@ -410,11 +410,13 @@ public abstract class BaseTestCellComment {
         assertEquals(CellAddress.A1, comment.getAddress());
         CellAddress C2 = new CellAddress("C2");
         assertEquals("C2", C2.formatAsString());
+        assertEquals("R2C3", C2.formatAsR1C1String());
         comment.setAddress(C2);
         assertEquals(C2, comment.getAddress());
 
         CellAddress E10 = new CellAddress(9, 4);
         assertEquals("E10", E10.formatAsString());
+        assertEquals("R10C5", E10.formatAsR1C1String());
         comment.setAddress(9, 4);
         assertEquals(E10, comment.getAddress());
     }
diff --git a/poi/src/test/java/org/apache/poi/ss/util/TestCellAddress.java b/poi/src/test/java/org/apache/poi/ss/util/TestCellAddress.java
index 044203f3c2..14013d4304 100644
--- a/poi/src/test/java/org/apache/poi/ss/util/TestCellAddress.java
+++ b/poi/src/test/java/org/apache/poi/ss/util/TestCellAddress.java
@@ -51,6 +51,7 @@ final class TestCellAddress {
     @Test
     void testFormatAsString() {
         assertEquals("A1", CellAddress.A1.formatAsString());
+        assertEquals("R1C1", CellAddress.A1.formatAsR1C1String());
     }
 
     @Test