Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Fujifilm X-T20 and Fujifilm X-T30 side-by-side from the front, back and top in their relative dimensions. Fujifilm X-T20 has external dimensions of 118 x 83 x 41 mm (4.65 x 3.27 x 1.61″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). Fujifilm X-T30 has external dimensions of 118 x 83 x 47 mm (4.65 x 3.27 x 1.85″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries).
Below you can see the front view size comparison of Fujifilm X-T20 and Fujifilm X-T30. Fujifilm X-T20 has the same height and width with Fujifilm X-T30. On the other hand, with a thickness of 41mm, it is 6mm thinner.
Here is the back view size comparison of Fujifilm X-T20 and Fujifilm X-T30.
Now lets look at the top view comparison of Fujifilm X-T20 and Fujifilm X-T30.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Fujifilm X-T20 and Fujifilm X-T30 have exactly the same weight of 383g.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since both Fujifilm X-T20 and Fujifilm X-T30 have the same Fujifilm X lens mount and APS-C sized sensors, lenses will not be a differentiator on total size of the system.
Unfortunately neither Fujifilm X-T20 nor Fujifilm X-T30 provides any type of weather sealing in their body, 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
LCD Screen Size and Features
Fujifilm X-T20 and Fujifilm X-T30's LCD screens has the same diagonal size of 3".
Both cameras feature Tilting screens
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels.