Is there a way I can figure out if the amount of gas in my car will get me to my destination?

-I have a half a tank of gas and I know my trip there and back is 50 miles. I was wondering if there was some calculator online or some way for me to figure out if it will last me, or how long it will last me before I will have to fill it. I'm sure I could figure it out with calculations, but I'm not that good at math.Any car should make a 50 mile trip on 1/2 tank of gas. You need to figure out what kind of gas mileage you are getting. You do this by filling the tank and writing the mileage down, driving until you get to almost empty and filling it again. Divide the miles by the gallons you added. Do this 3 times and average them(add together and divide by 3, this gives you an average Miles per gallon), This does 2 things. Gives you the MPG for the car and lets you know how far you can travel on a tank of gas.
Try driving there and when the tank gets low, fill it up.