How to Change Terminal Font Size in Ubuntu 18.04 LTS?br br Step 1: Right click on the desktop, and then click on 'Open Terminal.'br br Step 2: Right click in the terminal, and then click on 'Preferences.'br br Step 3: Click on the 'text' tab, and then click on 'custom font.' br br Step 4: Click on the dropdown next to custom font.br br Step 5: Use the '+' and '-' button to select your font size. After that, click on 'select' button.br br Step 6: Close the preferences window.