diff --git a/lib/ui/text.dart b/lib/ui/text.dart
index 0cd7d7d65af..50a520ec14e 100644
--- a/lib/ui/text.dart
+++ b/lib/ui/text.dart
@@ -1641,7 +1641,9 @@ class LineMetrics {
 
   /// Total height of the line from the top edge to the bottom edge.
   ///
-  /// This is equivalent to `ascent + descent`
+  /// This is equivalent to `round(ascent + descent)`. This value is provided
+  /// separately due to rounding causing sub-pixel differences from the unrounded
+  /// values.
   final double height;
 
   /// Width of the line from the left edge of the leftmost glyph to the right
@@ -1661,6 +1663,9 @@ class LineMetrics {
   final double left;
 
   /// The y coordinate of the baseline for this line from the top of the paragraph.
+  ///
+  /// The bottom edge of the paragraph up to and including this line may be obtained
+  /// through `baseline + descent`.
   final double baseline;
 
   /// The number of this line in the overall paragraph, with the first line being
diff --git a/lib/ui/text/line_metrics.cc b/lib/ui/text/line_metrics.cc
index 11c5460764c..a224e9b29b6 100644
--- a/lib/ui/text/line_metrics.cc
+++ b/lib/ui/text/line_metrics.cc
@@ -31,10 +31,13 @@ Dart_Handle DartConverter<flutter::LineMetrics>::ToDart(
 
   Dart_Handle argv[argc] = {
       tonic::ToDart(*val.hard_break), tonic::ToDart(*val.ascent),
-      tonic::ToDart(*val.descent),    tonic::ToDart(*val.unscaled_ascent),
-      tonic::ToDart(*val.height),     tonic::ToDart(*val.width),
-      tonic::ToDart(*val.left),       tonic::ToDart(*val.baseline),
-      tonic::ToDart(*val.line_number)};
+      tonic::ToDart(*val.descent), tonic::ToDart(*val.unscaled_ascent),
+      // We add then round to get the height. The
+      // definition of height here is different
+      // than the one in LibTxt.
+      tonic::ToDart(round(*val.ascent + *val.descent)),
+      tonic::ToDart(*val.width), tonic::ToDart(*val.left),
+      tonic::ToDart(*val.baseline), tonic::ToDart(*val.line_number)};
   return Dart_New(GetLineMetricsType(), tonic::ToDart("_"), argc, argv);
 }
 
diff --git a/third_party/txt/src/txt/line_metrics.h b/third_party/txt/src/txt/line_metrics.h
index 38cecd1dc71..2efd538c710 100644
--- a/third_party/txt/src/txt/line_metrics.h
+++ b/third_party/txt/src/txt/line_metrics.h
@@ -48,7 +48,9 @@ class LineMetrics {
   double ascent = 0.0;
   double descent = 0.0;
   double unscaled_ascent = 0.0;
-  // Height of the line.
+  // Total height of the paragraph including the current line.
+  //
+  // The height of the current line is `round(ascent + descent)`.
   double height = 0.0;
   // Width of the line.
   double width = 0.0;