# My providers struggle with choosing the right ASQ questionnaire interval. Is there a way to ensure they are selecting the correct interval?

Mark E. Ting  
Jul 31, 2019  
2555 views

When it comes to screening, accuracy is important. Don't second guess your by-hand calculations—use our online calculator instead! Always choose the right questionnaire for a child's age with [the ASQ Calculator](/content/free-resources/asq-calculator/index.html).

Simply enter the ASQ administration date, the child's date of birth, and the number of weeks the child was born prematurely (if applicable). The calculator will provide you with the child's adjusted age (if applicable) as well as the ASQ-3 and ASQ:SE-2 interval that should be administered.

Need to calculate on the go? The [ASQ Age Calculator](/content/landing-page/calculator-app/index.html) is also available as an app! Download for free in the [Apple App Store](https://apps.apple.com/us/app/asq-age-adjusted-score-calculator/id1035472490) or the [Google Play Store](https://play.google.com/store/apps/details?id=com.PaulBrookes.AsqCalculator&hl=en_US).

#### Tags  
[age interval(12)](https://support.agesandstages.com/kb/tag/154)  
[asq website(17)](https://support.agesandstages.com/kb/tag/365)  
[correct questionnaire(1)](https://support.agesandstages.com/kb/tag/403)  
[premature(2)](https://support.agesandstages.com/kb/tag/404)  
[age calculator(1)](https://support.agesandstages.com/kb/tag/405)