Is 700c Equivalent to 26 or 27?

[LilyRose]

Road 700C is equivalent to 28 inches, while mountain bikes typically have 26-inch wheel diameters. Mountain bike tires are usually 1.9 inches or wider, whereas road bike tires are around 20 millimeters in width. Generally, 700c wheelsets are more commonly used in European bicycles. In China, road bikes commonly use 700c, whether it's 26-inch, 29er, 700c, or 650B, all of which are suitable for long-distance use. More related information is as follows: Wheel Characteristics: 700c wheels are lightweight and smooth, making them the first choice for paved roads with high riding efficiency. However, they also have certain drawbacks. On rough roads with gradients below 20%, comfort is slightly reduced, and their load-bearing capacity and wheelset strength are slightly inferior to 26-inch wheels. Compatibility with disc brakes is relatively poor, mainly because there are few 700c disc brake frames and limited options for disc brakes specifically designed for 700c. Wheel Specifications: 700C wheels are divided into three types: A, B, and C, all with a measured diameter of approximately 700 millimeters. Class A 700 millimeters measures large rims with small tires, Class B measures medium rims with medium tires, and Class C measures small rims with large tires.