Help with TMP37 temperature sensor

Using Arduino Sensors
2

int reading = analogRead(A0);
float mv = (reading * 5.0) / 1024.0;

this code results in volts...

try this

int raw = analogRead(tempPin);
float milliVolts = raw * 4.887586;        // faster than * 5.0/1023      ==> 0 .. 5000
float tempC = (milliVolts - 500) * 0.05;  // faster than / 20            ==> -500 .. 4500 ==> / 20 ==> -25 .. +225
float tempH = tempC * 1.8 + 32;