If you want to go faster on your bike improving your power-to-weight ratio is a must. Power-to-weight ratio in measured in Watts per Kg. for short W/kg.
There are three ways to increase your power-to-weight ratio:
This calculator tries to answer what you should focus on to get the best results. The lumpier the terrain the more important your power-to-weight ratio is. On fast flat roads the it is absolute power key.
This calculator gives the option to enter a known existing hill which could be in a race or local hill enter you weight, the weight of you bike, the distance and gradient of the hill. You can get this data from app like Strava. You then enter you known time and a target time and what you would like to be able to do. It will then work out how must power you must increase or how much weight you must drop.