diff --git a/src/MeasureUtil/MeasureUtil.spec.ts b/src/MeasureUtil/MeasureUtil.spec.ts
index ce4e5c988..879daeeb1 100644
--- a/src/MeasureUtil/MeasureUtil.spec.ts
+++ b/src/MeasureUtil/MeasureUtil.spec.ts
@@ -60,17 +60,21 @@ describe('MeasureUtil', () => {
         const start = [0, 0];
         const end = [0, 100];
         const end2 = [0, 100550];
+        const end3 = [0, 0.1];
 
         const shortLine = new OlGeomLineString([start, end]);
         const longLine = new OlGeomLineString([start, end2]);
+        const veryShortLine = new OlGeomLineString([start, end3]);
 
         map = TestUtil.createMap();
 
         const expectedShortLength = MeasureUtil.formatLength(shortLine, map, 2);
         const expectedLongLength = MeasureUtil.formatLength(longLine, map, 2);
+        const expectedVeryShortLength = MeasureUtil.formatLength(veryShortLine, map, 2);
 
         expect(expectedShortLength).toBe('99.89 m');
         expect(expectedLongLength).toBe('100.43 km');
+        expect(expectedVeryShortLength).toBe('99.89 mm');
 
         TestUtil.removeMap(map);
       });
@@ -104,17 +108,21 @@ describe('MeasureUtil', () => {
       });
       it('formats the area of a polygon as expected', () => {
         const bigPolyCoords = smallPolyCoords.map(coord => [coord[0] * 100, coord[1] * 100]);
+        const verySmallPolyCoords = smallPolyCoords.map(coord => [coord[0] / 100, coord[1] / 100]);
 
         const smallPoly = new OlGeomPolygon([smallPolyCoords]);
         const bigPoly = new OlGeomPolygon([bigPolyCoords]);
+        const verySmallPoly = new OlGeomPolygon([verySmallPolyCoords]);
 
         map = TestUtil.createMap();
 
         const expectedSmallArea = MeasureUtil.formatArea(smallPoly, map, 2);
         const expectedBigArea = MeasureUtil.formatArea(bigPoly, map, 2);
+        const expectedVerySmallArea = MeasureUtil.formatArea(verySmallPoly, map, 2);
 
         expect(expectedSmallArea).toBe('99.78 m<sup>2</sup>');
         expect(expectedBigArea).toBe('1 km<sup>2</sup>');
+        expect(expectedVerySmallArea).toBe('9977.66 mm<sup>2</sup>');
 
         TestUtil.removeMap(map);
       });
diff --git a/src/MeasureUtil/MeasureUtil.ts b/src/MeasureUtil/MeasureUtil.ts
index ea8752e7e..6450de2f6 100644
--- a/src/MeasureUtil/MeasureUtil.ts
+++ b/src/MeasureUtil/MeasureUtil.ts
@@ -44,7 +44,7 @@ class MeasureUtil {
    *   allowed for the measure tooltips
    * @param {boolean} geodesic Is the measurement geodesic (default is true).
    *
-   * @return {string} The formatted length of the line.
+   * @return {string} The formatted length of the line (units: km, m or mm).
    */
   static formatLength(
     line: OlGeomLineString, map: OlMap, decimalPlacesInToolTips: number, geodesic = true