diff --git a/plotjuggler_app/CMakeLists.txt b/plotjuggler_app/CMakeLists.txt
index a6243454d..cd4ac32f1 100644
--- a/plotjuggler_app/CMakeLists.txt
+++ b/plotjuggler_app/CMakeLists.txt
@@ -35,6 +35,7 @@ QT5_WRAP_UI ( UI_SRC
     transforms/outlier_removal.ui
     transforms/integral_transform.ui
     transforms/scale_transform.ui
+    transforms/samples_count.ui
 
     cheatsheet/cheatsheet_dialog.ui
     )
@@ -86,6 +87,7 @@ SET( PLOtJUGGLER_SRC
     transforms/outlier_removal.cpp
     transforms/integral_transform.cpp
     transforms/absolute_transform.cpp
+    transforms/samples_count.cpp
 
     transforms/first_derivative.cpp
     transforms/scale_transform.cpp
@@ -103,7 +105,7 @@ add_executable(plotjuggler
     ${PLOtJUGGLER_SRC}
     ${RES_SRC}
     ${UI_SRC}
-    ${BACKWARD_ENABLE})
+    ${BACKWARD_ENABLE} )
 
 if (NOT WIN32)
     add_backward(plotjuggler)
diff --git a/plotjuggler_app/main.cpp b/plotjuggler_app/main.cpp
index 0e2ecfabc..b12959d2e 100644
--- a/plotjuggler_app/main.cpp
+++ b/plotjuggler_app/main.cpp
@@ -24,6 +24,7 @@
 
 #include "PlotJuggler/transform_function.h"
 #include "transforms/first_derivative.h"
+#include "transforms/samples_count.h"
 #include "transforms/scale_transform.h"
 #include "transforms/moving_average_filter.h"
 #include "transforms/moving_variance.h"
@@ -245,6 +246,7 @@ int main(int argc, char* argv[])
   TransformFactory::registerTransform<IntegralTransform>();
   TransformFactory::registerTransform<AbsoluteTransform>();
   TransformFactory::registerTransform<MovingVarianceFilter>();
+  TransformFactory::registerTransform<SamplesCountFilter>();
   //---------------------------
 
   QCommandLineParser parser;
diff --git a/plotjuggler_app/transforms/samples_count.cpp b/plotjuggler_app/transforms/samples_count.cpp
new file mode 100644
index 000000000..969960e00
--- /dev/null
+++ b/plotjuggler_app/transforms/samples_count.cpp
@@ -0,0 +1,72 @@
+#include "samples_count.h"
+#include "ui_samples_count.h"
+
+#include <QSpinBox>
+
+SamplesCountFilter::SamplesCountFilter()
+    : ui(new Ui::SamplesCount)
+    , _widget(new QWidget())
+{
+    ui->setupUi(_widget);
+
+    connect(ui->spinBoxMilliseconds,
+            qOverload<int>(&QSpinBox::valueChanged), this,
+            [=](int) { emit parametersChanged(); });
+}
+
+SamplesCountFilter::~SamplesCountFilter()
+{
+    delete ui;
+    delete _widget;
+}
+
+QWidget* SamplesCountFilter::optionsWidget()
+{
+    return _widget;
+}
+
+bool SamplesCountFilter::xmlSaveState(QDomDocument& doc,
+                                        QDomElement& parent_element) const
+{
+    QDomElement widget_el = doc.createElement("options");
+    widget_el.setAttribute("milliseconds", ui->spinBoxMilliseconds->value());
+    parent_element.appendChild(widget_el);
+    return true;
+}
+
+bool SamplesCountFilter::xmlLoadState(const QDomElement& parent_element)
+{
+    QDomElement widget_el = parent_element.firstChildElement("options");
+    if(widget_el.isNull())
+    {
+        return false;
+    }
+    int ms = widget_el.attribute("milliseconds", "1000").toInt();
+    ui->spinBoxMilliseconds->setValue(ms);
+    return true;
+}
+
+std::optional<PJ::PlotData::Point> SamplesCountFilter::calculateNextPoint(size_t index)
+{
+    if(dataSource()->size() == 0) {
+        return std::nullopt;
+    }
+    const double delta = 0.001 * double(ui->spinBoxMilliseconds->value());
+    const auto& point = dataSource()->at(index);
+    if(index == 0) {
+        interval_end_ = point.x + delta;
+        count_ = 0;
+    }
+    count_++;
+
+    if(point.x > interval_end_ || index == (dataSource()->size() - 1))
+    {
+        auto out = PJ::PlotData::Point{ interval_end_, double(count_) };
+        while(point.x > interval_end_) {
+            interval_end_ += delta;
+        }
+        count_ = 0;
+        return out;
+    }
+    return std::nullopt;
+}
diff --git a/plotjuggler_app/transforms/samples_count.h b/plotjuggler_app/transforms/samples_count.h
new file mode 100644
index 000000000..7e99c4f9b
--- /dev/null
+++ b/plotjuggler_app/transforms/samples_count.h
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <QWidget>
+#include "PlotJuggler/transform_function.h"
+
+using namespace PJ;
+
+namespace Ui
+{
+class SamplesCount;
+}
+
+class SamplesCountFilter : public TransformFunction_SISO
+{
+public:
+    explicit SamplesCountFilter();
+
+    ~SamplesCountFilter() override;
+
+    static const char* transformName()
+    {
+        return "Samples Counter";
+    }
+
+    const char* name() const override
+    {
+        return transformName();
+    }
+
+    QWidget* optionsWidget() override;
+
+    bool xmlSaveState(QDomDocument& doc, QDomElement& parent_element) const override;
+
+    bool xmlLoadState(const QDomElement& parent_element) override;
+
+private:
+    Ui::SamplesCount* ui;
+    QWidget* _widget;
+
+    int count_ = 0;
+    double interval_end_ = 0;
+
+    std::optional<PlotData::Point> calculateNextPoint(size_t index) override;
+};
+
diff --git a/plotjuggler_app/transforms/samples_count.ui b/plotjuggler_app/transforms/samples_count.ui
new file mode 100644
index 000000000..b03bb30b7
--- /dev/null
+++ b/plotjuggler_app/transforms/samples_count.ui
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>SamplesCount</class>
+ <widget class="QWidget" name="SamplesCount">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Count the number of data points in the given time interval:</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Milliseconds:</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QSpinBox" name="spinBoxMilliseconds">
+       <property name="minimumSize">
+        <size>
+         <width>100</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="maximum">
+        <number>999999</number>
+       </property>
+       <property name="value">
+        <number>1000</number>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>