diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 254ecd0e..4b35892e 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -30,8 +30,7 @@
 
         <activity
             android:name=".activities.MainActivity"
-            android:exported="false"
-            android:screenOrientation="portrait" />
+            android:exported="false" />
 
         <activity
             android:name=".activities.WidgetConfigureActivity"
diff --git a/app/src/main/res/layout-land/activity_main.xml b/app/src/main/res/layout-land/activity_main.xml
new file mode 100644
index 00000000..14097b37
--- /dev/null
+++ b/app/src/main/res/layout-land/activity_main.xml
@@ -0,0 +1,236 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/calculator_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="com.simplemobiletools.calculator.activities.MainActivity"
+    tools:ignore="HardcodedText">
+
+    <TextView
+        android:id="@+id/formula"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2.1"
+        android:fontFamily="sans-serif-light"
+        android:gravity="end|bottom"
+        android:maxLines="1"
+        android:paddingLeft="@dimen/activity_margin"
+        android:paddingRight="@dimen/activity_margin"
+        android:textSize="@dimen/formula_text_size" />
+
+    <TextView
+        android:id="@+id/result"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1.8"
+        android:fontFamily="sans-serif-light"
+        android:gravity="center_vertical|end"
+        android:maxLines="1"
+        android:paddingLeft="@dimen/activity_margin"
+        android:paddingRight="@dimen/activity_margin"
+        android:textSize="@dimen/display_text_size"
+        tools:text="0" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/btn_7"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="7" />
+
+        <Button
+            android:id="@+id/btn_8"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="8" />
+
+        <Button
+            android:id="@+id/btn_9"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="9" />
+
+        <Button
+            android:id="@+id/btn_divide"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="÷" />
+
+        <Button
+            android:id="@+id/btn_clear"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="C" />
+
+        <Button
+            android:id="@+id/btn_reset"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="AC"
+            android:visibility="gone" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/btn_4"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="4" />
+
+        <Button
+            android:id="@+id/btn_5"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="5" />
+
+        <Button
+            android:id="@+id/btn_6"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="6" />
+
+        <Button
+            android:id="@+id/btn_multiply"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="×" />
+
+        <Button
+            android:id="@+id/btn_root"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="√" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/btn_1"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="1" />
+
+        <Button
+            android:id="@+id/btn_2"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="2" />
+
+        <Button
+            android:id="@+id/btn_3"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="3" />
+
+        <Button
+            android:id="@+id/btn_minus"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="-" />
+
+        <Button
+            android:id="@+id/btn_power"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="^" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2"
+        android:orientation="horizontal">
+
+        <Button
+            android:id="@+id/btn_0"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="0" />
+
+        <Button
+            android:id="@+id/btn_decimal"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="." />
+
+        <Button
+            android:id="@+id/btn_equals"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="=" />
+
+        <Button
+            android:id="@+id/btn_plus"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="+" />
+
+        <Button
+            android:id="@+id/btn_percent"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="%" />
+
+    </LinearLayout>
+</LinearLayout>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 7bc349eb..f097ae38 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -79,6 +79,7 @@
             android:layout_weight="1"
             android:text="AC"
             android:visibility="gone" />
+
     </LinearLayout>
 
     <LinearLayout
@@ -118,6 +119,7 @@
             android:layout_height="match_parent"
             android:layout_weight="1"
             android:text="÷" />
+
     </LinearLayout>
 
     <LinearLayout
@@ -157,6 +159,7 @@
             android:layout_height="match_parent"
             android:layout_weight="1"
             android:text="×" />
+
     </LinearLayout>
 
     <LinearLayout
@@ -196,6 +199,7 @@
             android:layout_height="match_parent"
             android:layout_weight="1"
             android:text="-" />
+
     </LinearLayout>
 
     <LinearLayout
@@ -235,5 +239,6 @@
             android:layout_height="match_parent"
             android:layout_weight="1"
             android:text="+" />
+
     </LinearLayout>
 </LinearLayout>