Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Canon M5 and Canon T7i side-by-side from the front, back and top in their relative dimensions. Canon M5 has external dimensions of 116 x 89 x 61 mm (4.57 x 3.5 x 2.4″) and weighs 427 g (0.94 lb / 15.06 oz) (including batteries). Canon T7i has external dimensions of 131 x 100 x 76 mm (5.16 x 3.94 x 2.99″) and weighs 532 g (1.17 lb / 18.77 oz) (including batteries).
Below you can see the front-view size comparison of the Canon M5 and the Canon T7i. Canon M5 is clearly the smaller of the two cameras. Its body is 15mm narrower, 11mm shorter and 15mm thinner than Canon T7i.
Here is the back view size comparison of the Canon M5 and Canon T7i.
Now lets look at the top view comparison of Canon M5 and Canon T7i.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Canon M5 is significantly lighter (105g ) than the Canon T7i which may become a big advantage especially on long walking trips.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you also have to take into account the lenses that you will be using with these bodies. Since both Canon M5 and Canon T7i have the same APS-C sized sensor, their lenses for a similar focal length and aperture will be similar in size and weight.
Weather Sealing
Unfortunately neither the Canon EOS M5 nor Canon EOS Rebel T7i / EOS 800D / Kiss X9i provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Mirrorless Cameras with Weather Sealing Top DSLR Cameras with Weather Sealing
LCD Screen Size and Features
Canon M5's 3.20" LCD screen is slightly larger than Canon T7i's 3 screen.