Can someone please comfirm the there are 526 links on the 11 feet chain?

Oh, I put it all in the title and ran out of words what to write here.

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4 links per inch times 12 inches per foot times 11 feet gets me 528, but I havenâ€™t counted them. Do you need me to do that?

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I was hoping my rusted math would somehow add up and I donâ€™t need to count them.
Measuring 2 old chains and 2 new ones, all have a length of 3345mm (~10.97441ft) resting (pulled with ~ 800g) and 3347mm (~10.98097ft) pulled with 15kg (the theoretical max force of my sled if the frame was not angled and I would cut under the sprocket).
If I assume 528 links my chain pitch would be 6.3352 on the resting chain compared to 6.3390 with 15kg.
If I assume 527 links my chain pitch would be 6.3472 on the resting chain compared to 6.3510 with 15kg.
If I assume 526 links my chain pitch would be 6.3593 on the resting chain compared to 6.3631 with 15kg.
527 links seems closer to the theoretical chain pith of 1/4â€™â€™ ~6.35mm.

The other way around 528x6.35=3352.8mm (11ft), my chains should be 7.8mm longer then they are.
527x6.35=3346.45mm (10.9792ft), my chains should be 1.45mm longer then they are.
526x6.35=3340.1mm (10.9583ft), my chains should be 5mm shorter then they are.

I might be totally lost in conversion here and the setup was very urban, so human eyeball error of ~2mm realistic.
All I got out of this day is that the chain stretches 2mm on somewhere around 11ft with 15kg. A force that will not be reached on a single chain with the Maslows we have around.

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I would expect 527 links (since both ends end up with the inner links, not the