Here's some info I posted a while back. Has links to various calculators, which vary by over 1" based upon my inseam. I'm with EURO, I've adjusted my saddle-height by feel over the years to give me the least amount of knee-pain and best power. In doing time-trials, I've also found that the higher-saddle gave me faster speeds, although I tend to sit further back than the even higher & forward position of triathletes. The way I measure it is to put the pedal at the very bottom (crank parallel to seat-tube), then place my heel over the pedal-spindle with a perfectly straight leg. I adjust to have a 0.5-0.75cm gap between my heel and the pedal.

The pointing-down of the toes gives another couple inches to the bottom of the ball of the foot. Just went out and measured to verify and my inseam is 27.5" (book under the crotch method) and my saddle height is 32.5" (top of seat to top of lower-pedal, crank-parallel to seat-tube). Measured my track bike and top-of-seat to top-of-pedal is 33".

1. I originally used the Dave Moulton method of setting my saddle height. I chose it after talking with him at length at a CABDA show back when I was just starting out and had some knee-aches. We discussed it for hours and he was very thorough with explaining the various "whys" of his fitting philosophy. So I taped a 1x2" piece of wood to the top of my pedal (it's really only 0.75" thick). Adjusted my seat so that my heels touched the wood on both sides without rocking the hips and that ended up with the saddle height of 32.5" or +5" over my inseam.

2. That is taller by about 1" than the method that the Colorado Cyclist recommends. Their number of 31.5" to the pedal top (account for crankarm length of 172.5mm - 0.5" for pedal height) is about 4" longer than my inseam.

3. Here's another Frame size & Seat Height calculator. I don't understand the logic behind measuring from the top of the seat to the center of the bottom-bracket spindle. The seat height HAS to take into account the crank-arm length. This method comes up with a figure of 31", about 3.5" longer than my inseam. Both the #2 & #3 methods are based on the Lemond method, but it's way too simplistic. It doesn't atake into account individual leg-segment lengths like the femur and it doesn't account for crankarm length.

4. Yet another seat-height method on SBRAweb which recommends 1.09 * inseam for a figure of 30"; about 2.5" longer than my inseam.

Remember that you do not ride with your heels on the pedal. The ball of the foot extends down much further and brings the calves into play.