700C, sometimes AKA 28” has a 622 mm bead seat diameter.
27”, not to be confused with 27.5” has a BSD of 630 mm.
If the width is OK, the tubes are interchangeable.
There’s another 28-something” with a 635 mm BSD.
Those are usually wider, so not compatible with the majority of road bike sized tires. But might interchange with 29er and hybrid tires.
Last edited by dabac; 11-26-17 at 10:57 AM.