Limiting the amount of fields in your form makes it easier to fill out, which can therefore increase your conversion rate. Remember a simple & always working rule: the less, the better. Don’t overload your users with the fields and requests. 

Here’s more on how to increase your forms conversion:

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All forms are shortened to the minimum: the fewer fields, the higher conversion

Let's face it: spending time to build a donation form, feedback form, or survey can be frustrating when your form conversion rate is low. The entire goal of most, if not all forms is to gather responses. So, why are your respondents not filling out your forms as planned?

All forms are shortened to the minimum: the fewer fields, the higher conversion

4 Hacks to Increase Your Web Form Conversion Rate