Here are some tips to adjust your bicycle seat (or saddle) for a proper fit:
1. Adjust the height so your knee angle equals 25° - 35°.
2. A plumb line dropped from the tibial tuberosity (bump below the kneecap) should intersect with the pedal spindle.
3. The tilt should be level (tip may be slightly lower for more aggressive riding)
4. The width of your saddle should allow your weight to be distributed on the sit bones.