How many G's when a space shuttle takes off?

When the space shuttle takes off, the astronauts experience 9 times the normal force of gravity on earth.

At launch the gravity that they experience is about 1.7 g's and by the time the solid rocket boosters are separated which is two minutes into the launch the g-force will be over 2 g's. At the separation of the solid rocket booster, the g-force will decrease to just over 1 g. During the last one minute of the ascent, which is for 8.5 minutes, when the main engines ignited the last full minute, we will experience about 3 g's, and when the main engines cut off around 8 minutes, 30 seconds, you go right into zero-g and everything starts to float around.