diff --git a/tools/jotpluggler/app.cc b/tools/jotpluggler/app.cc
index 4b56299ea..f25656c7b 100644
--- a/tools/jotpluggler/app.cc
+++ b/tools/jotpluggler/app.cc
@@ -324,7 +324,7 @@ void configure_style() {
   plot_style.LegendInnerPadding = ImVec2(6.0f, 3.0f);
   plot_style.LegendSpacing = ImVec2(7.0f, 2.0f);
   plot_style.PlotPadding = ImVec2(4.0f, 8.0f);
-  plot_style.FitPadding = ImVec2(0.02f, 0.4f);
+  plot_style.FitPadding = ImVec2(0.02f, static_cast<float>(PLOT_Y_PADDING_FRACTION));
 
   ImPlot::MapInputDefault();
   ImPlotInputMap &input_map = ImPlot::GetInputMap();
diff --git a/tools/jotpluggler/internal.h b/tools/jotpluggler/internal.h
index 22a5c1dd9..b70aec1a5 100644
--- a/tools/jotpluggler/internal.h
+++ b/tools/jotpluggler/internal.h
@@ -58,6 +58,7 @@ inline constexpr float SIDEBAR_MAX_WIDTH = 520.0f;
 inline constexpr float TIMELINE_BAR_HEIGHT = 14.0f;
 inline constexpr float STATUS_BAR_HEIGHT = 52.0f;
 inline constexpr double MIN_HORIZONTAL_ZOOM_SECONDS = 2.0;
+inline constexpr double PLOT_Y_PADDING_FRACTION = 0.05;
 
 struct UiMetrics {
   float width = 0.0f;
diff --git a/tools/jotpluggler/plot.cc b/tools/jotpluggler/plot.cc
index b1324713a..270dc9055 100644
--- a/tools/jotpluggler/plot.cc
+++ b/tools/jotpluggler/plot.cc
@@ -7,8 +7,6 @@
 #include <cstdio>
 #include <limits>
 
-constexpr double PLOT_Y_PAD_FRACTION = 0.4;
-
 struct PlotBounds {
   double x_min = 0.0;
   double x_max = 1.0;
@@ -484,7 +482,7 @@ PlotBounds compute_plot_bounds(const Pane &pane,
     min_value = std::min(min_value, 0.0);
     max_value = std::max(max_value, 1.0);
   }
-  ensure_non_degenerate_range(&min_value, &max_value, PLOT_Y_PAD_FRACTION, 0.1);
+  ensure_non_degenerate_range(&min_value, &max_value, PLOT_Y_PADDING_FRACTION, 0.1);
   if (pane.range.has_y_limit_min) {
     min_value = pane.range.y_limit_min;
   }