diff --git a/editor/util.cpp b/editor/util.cpp
index 92eab8da..d5a8904c 100644
--- a/editor/util.cpp
+++ b/editor/util.cpp
@@ -98,9 +98,10 @@ QString AxiomUtil::formatChannelFull(float val, AxiomModel::FormType form) {
     return static_cast<QString>(formatFloatForm(val, form) % " " % getFormUnit(val, form)).trimmed();
 }
 
-QString AxiomUtil::formatNumForm(AxiomModel::NumValue value, bool includeForm) {
+QString AxiomUtil::formatNumForm(AxiomModel::NumValue value, bool includeForm, int *outNumLength) {
     if (fabsf(value.left - value.right) < 0.01f) {
         auto formattedNum = formatFloatForm(value.left, value.form);
+        if (outNumLength) *outNumLength = formattedNum.size();
         return includeForm ? static_cast<QString>(formattedNum % " " % getFormUnit(value.left, value.form))
                            : formattedNum;
     } else {
@@ -111,10 +112,16 @@ QString AxiomUtil::formatNumForm(AxiomModel::NumValue value, bool includeForm) {
         auto leftUnit = getFormUnit(value.left, value.form);
         auto rightUnit = getFormUnit(value.right, value.form);
 
-        if (leftUnit == rightUnit)
-            return formattedLeft % " / " % formattedRight % " " % leftUnit;
-        else
-            return formattedLeft % " " % leftUnit % " / " % formattedRight % " " % rightUnit;
+        if (leftUnit == rightUnit) {
+            auto leftSide = static_cast<QString>(formattedLeft % " / " % formattedRight);
+            if (outNumLength) *outNumLength = leftSide.size();
+            return leftSide % " " % leftUnit;
+        } else {
+            auto resultStr =
+                static_cast<QString>(formattedLeft % " " % leftUnit % " / " % formattedRight % " " % rightUnit);
+            if (outNumLength) *outNumLength = resultStr.size();
+            return resultStr;
+        }
     }
 }
 
diff --git a/editor/util.h b/editor/util.h
index f1d2ad23..ceefcb26 100644
--- a/editor/util.h
+++ b/editor/util.h
@@ -33,7 +33,7 @@ namespace AxiomUtil {
 
     QString formatChannelFull(float val, AxiomModel::FormType form);
 
-    QString formatNumForm(AxiomModel::NumValue value, bool includeForm);
+    QString formatNumForm(AxiomModel::NumValue value, bool includeForm, int *outNumLength = nullptr);
 
     QRect makeRect(QPoint p1, QPoint p2);
 
diff --git a/editor/widgets/controls/NumControlItem.cpp b/editor/widgets/controls/NumControlItem.cpp
index eb28acd3..c5db1403 100644
--- a/editor/widgets/controls/NumControlItem.cpp
+++ b/editor/widgets/controls/NumControlItem.cpp
@@ -322,7 +322,9 @@ void NumControlItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
     auto selectedAction = menu.exec(event->screenPos());
 
     if (selectedAction == setValAction) {
-        auto editor = new FloatingValueEditor(AxiomUtil::formatNumForm(control->value(), true), event->scenePos());
+        int formatNumLength;
+        auto formatNumString = AxiomUtil::formatNumForm(control->value(), true, &formatNumLength);
+        auto editor = new FloatingValueEditor(std::move(formatNumString), event->scenePos(), 0, formatNumLength);
         scene()->addItem(editor);
         connect(editor, &FloatingValueEditor::valueSubmitted, this, &NumControlItem::setStringValue);
     } else if (selectedAction == copyValAction) {