diff --git a/Calculator.rb b/Calculator.rb
new file mode 100644
index 0000000..75d01a0
--- /dev/null
+++ b/Calculator.rb
@@ -0,0 +1,62 @@
+def add(num1, num2)
+  return num1 + num2
+end
+
+def subtract(num1, num2)
+  return num1 - num2
+end
+
+def multiply(num1, num2)
+  return num1 * num2
+end
+
+def divide(num1, num2)
+  if num2 == 0
+    return "#{num1} is not divisible by 0"
+  else
+    return num1 / num2
+  end
+end
+
+
+def convert_to_num(num)
+  until num.to_f.to_s == num || num.to_i.to_s == num
+    print "I'm sorry, I did not understand. Please input a number (ex: 1): "
+    num = gets.chomp
+  end
+
+  if num.include? "."
+    return num.to_f
+  else
+    return num.to_i
+  end
+end
+
+
+puts "What operation would you like to use? \n\nYour options are to add (+), subtract (-), multiply (*) or divide (/): "
+operation = gets.chomp
+possible_operators = ["add", "+", "subtract", "-", "multiply", "*", "divide", "/"]
+until possible_operators.include?(operation)
+  print "I'm sorry, the only available options are to add (+), subtract (-), multiply (*) or divide (/): "
+  operation = gets.chomp
+end
+
+
+puts "What is your first number? "
+num1 = convert_to_num(gets.chomp)
+
+puts "What is your second number? "
+num2 = convert_to_num(gets.chomp)
+
+
+case operation
+when "add", "+"
+  puts add(num1, num2)
+when "subtract", "-"
+  puts subtract(num1, num2)
+when "multiply", "*"
+  puts multiply(num1, num2)
+when "divide", "/"
+  puts divide(num1, num2)
+
+end