diff --git a/src/blackgui/editors/coordinateform.cpp b/src/blackgui/editors/coordinateform.cpp
index e60ba6e3c..c3638b9c8 100644
--- a/src/blackgui/editors/coordinateform.cpp
+++ b/src/blackgui/editors/coordinateform.cpp
@@ -110,13 +110,13 @@ namespace BlackGui
             ui->le_LatDeg->setText(latParts.degAsString());
             ui->le_LatMin->setText(latParts.minAsString());
             ui->le_LatSec->setText(latParts.secAsString());
-            ui->le_LatSecFrag->setText(latParts.fractionalSecAsString());
+            ui->le_LatSecFrag->setText(latParts.fractionalSecAsString(6));
 
             const CLongitude::DegMinSecFractionalSec lngParts = lng.asSexagesimalDegMinSec(true);
             ui->le_LngDeg->setText(lngParts.degAsString());
             ui->le_LngMin->setText(lngParts.minAsString());
             ui->le_LngSec->setText(lngParts.secAsString());
-            ui->le_LngSecFrag->setText(lngParts.fractionalSecAsString());
+            ui->le_LngSecFrag->setText(lngParts.fractionalSecAsString(6));
 
             const QString elvString = coordinate.geodeticHeightAsString();
             ui->le_Elevation->setText(elvString);
diff --git a/src/blackmisc/math/mathutils.cpp b/src/blackmisc/math/mathutils.cpp
index c54422d41..aeadc8a47 100644
--- a/src/blackmisc/math/mathutils.cpp
+++ b/src/blackmisc/math/mathutils.cpp
@@ -141,7 +141,8 @@ namespace BlackMisc
         {
             double intpart;
             const double fractpart = modf(value, &intpart);
-            const QString f = QString::number(fractpart);
+            const int prec = width >= 0 ? width + 1 : 10;
+            const QString f = QString::number(fractpart, 'f', prec); // avoid scientific notation
             const QString fInt = f.length() < 3 ? QString("0") : f.mid(2);
             if (width < 0) { return fInt; }
             if (fInt.length() >= width) { return fInt.left(width); }