Does the height of an input field affect UX?

1. How tall should input fields be?
2. How long should input fields be?
3. How long should a text field be?
4. How big should a text box be?

How tall should input fields be?

A rule of thumb is 45–57px for a touch target, but for mobile that often result in fields which look obnoxiously large. Sizing input fields between 32px and 40px in height makes your field finger-friendly and not very large at the same time.

How long should input fields be?

Match fields to the fixed input length

Studies show that those input fields typically range from 18 to 33 characters.

How long should a text field be?

Text fields hold up to 255 characters in a single line.

How big should a text box be?

700 pixels wide is a good benchmark for text boxes with substantive text. We often mistakenly expand text boxes to very large sizes. A text box as wide as a 30-inch screen is less efficient for reading and site design than one that is 700 pixels (2.33 inches) in width.