m/s "Meters" convert to au/s "Astronomical Units"

I am sure there is a better way than what i am trying to do here, Any suggestions?

 void Update(){
 
         au = velocity/149597870700;
 
         if(au <= 0.01f)
         {
         shipVelocity.text = "Velocity:  " + velocity + " m/s";
         }
 
         if(au >= 0.0099f){
         shipVelocity.text = "Velocity:  " + au + " au/s";
         }
     }

Uhm this seems pretty ok? Are you worried about the division? If you would like to sacrifice precision, you can use bit shift to obtain a faster division. (I suggest shifting 30 bits to the right for approximating a division by 1495978707.)

As a concept there's nothing wrong with what you are doing. But the condition should just be an if-else. You don't need 2 if's to check if a number is greater than X. If the value is under 0.01au, you show speed in m/s. In all other cases you want au, right?

          if(au <= 0.01f)
          {
              shipVelocity.text = "Velocity:  " + velocity + " m/s";
          }
          else
          {
              shipVelocity.text = "Velocity:  " + au + " au/s";
          }

You could also micro optimize by calculating the threshold speed in m/s in the beginning of the game and then calculating au only if you need to show it. But there's no need for that unless you have hundreds of objects calculating this in Update()

Spot on, thanks for the suggestions they really do help allot,

For the if statements, I originally had 3 speeds m/s, $$anonymous$$/s, au/s so it was if, else if, else, but thanks for pointing that out i didn't notice it until i read your comment.