diff --git a/mainwindow.cpp b/mainwindow.cpp
index 117d27d..5b983d6 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -64,6 +64,7 @@ void MainWindow::openFile(QString fileName)
 void MainWindow::setSampleRate(QString rate)
 {
     input->setSampleRate(rate.toInt());
+    plots->setSampleRate(rate.toInt());
 }
 
 void MainWindow::setSampleRate(int rate)
diff --git a/plotview.cpp b/plotview.cpp
index 75789ec..05171cf 100644
--- a/plotview.cpp
+++ b/plotview.cpp
@@ -333,3 +333,9 @@ void PlotView::updateView(bool reCenter)
     // Re-paint
     viewport()->update();
 }
+
+void PlotView::setSampleRate(off_t rate)
+{
+    spectrogramPlot->setSampleRate(rate);
+}
+
diff --git a/plotview.h b/plotview.h
index 2e19b3d..783a826 100644
--- a/plotview.h
+++ b/plotview.h
@@ -35,6 +35,7 @@ class PlotView : public QAbstractScrollArea, Subscriber
 
 public:
     PlotView(InputSource *input);
+    void setSampleRate(off_t rate);
 
 signals:
     void timeSelectionChanged(float time);
@@ -79,4 +80,4 @@ private:
     int plotsHeight();
     off_t samplesPerLine();
     void updateView(bool reCenter = false);
-};
\ No newline at end of file
+};
diff --git a/spectrogramplot.cpp b/spectrogramplot.cpp
index fd8ce88..ee71c23 100644
--- a/spectrogramplot.cpp
+++ b/spectrogramplot.cpp
@@ -52,6 +52,53 @@ void SpectrogramPlot::paintFront(QPainter &painter, QRect &rect, range_t<off_t>
 {
     if (tunerEnabled())
         tuner.paintFront(painter, rect, sampleRange);
+
+    float startTime = (float)sampleRange.minimum / sampleRate;
+    float stopTime = (float)sampleRange.maximum / sampleRate;
+    float duration = stopTime - startTime;
+
+    painter.save();
+
+    QPen pen(Qt::white, 1, Qt::SolidLine);
+    painter.setPen(pen);
+    QFontMetrics fm(painter.font());
+
+    int tickWidth = 80;
+    int maxTicks = rect.width() / tickWidth;
+
+    double durationPerTick = 10 * pow(10, floor(log(duration / maxTicks) / log(10)));
+
+    double firstTick = int(startTime / durationPerTick) * durationPerTick;
+
+    double tick = firstTick;
+
+    while (tick <= stopTime) {
+
+        off_t tickSample = tick * sampleRate;
+        int tickLine = (tickSample - sampleRange.minimum) / getStride();
+
+        char buf[128];
+        snprintf(buf, sizeof(buf), "%.06f", tick);
+        painter.drawLine(tickLine, 0, tickLine, 30);
+        painter.drawText(tickLine + 2, 25, buf);
+
+        tick += durationPerTick;
+    }
+
+    // Draw small ticks
+    durationPerTick /= 10;
+    firstTick = int(startTime / durationPerTick) * durationPerTick;
+    tick = firstTick;
+    while (tick <= stopTime) {
+
+        off_t tickSample = tick * sampleRate;
+        int tickLine = (tickSample - sampleRange.minimum) / getStride();
+
+        painter.drawLine(tickLine, 0, tickLine, 10);
+        tick += durationPerTick;
+    }
+
+    painter.restore();
 }
 
 void SpectrogramPlot::paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
@@ -239,3 +286,10 @@ uint qHash(const TileCacheKey &key, uint seed)
 {
     return key.fftSize ^ key.zoomLevel ^ key.sample ^ seed;
 }
+
+void SpectrogramPlot::setSampleRate(off_t rate)
+{
+    sampleRate = rate;
+    emit repaint();
+}
+
diff --git a/spectrogramplot.h b/spectrogramplot.h
index 44d7ee0..52a56f6 100644
--- a/spectrogramplot.h
+++ b/spectrogramplot.h
@@ -42,6 +42,7 @@ public:
     void paintFront(QPainter &painter, QRect &rect, range_t<off_t> sampleRange) override;
     void paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange) override;
     bool mouseEvent(QEvent::Type type, QMouseEvent event) override;
+    void setSampleRate(off_t rate);
 
 public slots:
     void setFFTSize(int size);
@@ -65,6 +66,7 @@ private:
     int zoomLevel;
     float powerMax;
     float powerMin;
+    off_t sampleRate = 0;
 
     Tuner tuner;
     std::shared_ptr<TunerTransform> tunerTransform;