About PediTools

The publicly accesssible PediTools website was launched in January 2012 to provide clinical calculators for pediatric providers. It was originally developed to allow LMS-based calculations on anthropometric measurements of individual patients, but has since grown to provide a wider array of tools.

Written by a clinician for clinicians, the overarching design goal has been to provide practical tools for use at the point of care.

If you use PediTools for a publication or clinical guideline, please consider citing Chou JH et al., J Med Internet Res 2020;22(1):e16204 (available open access PDF).


The User acknowledges and agrees that these tools will be used only as a reference aid, and that the information contained in the products are not intended to be (nor should it be used as) a substitute for the exercise of professional judgement.

In view of the possibility of human error or changes in medical science, the User should confirm the information in the products through independent sources. The products are provided without warranties of any kind, express or implied, and the author disclaim any liability, loss, or damage caused by it or its content.

By continuing to use these products, you have indicated your acceptance of these terms.

Privacy Policy

  • Medical calculator data: we will not save or analyze any data entered into the inputs for our medical calculators.

Cookies and Web Beacons

  • On PediTools, we do use cookies to store information, such as your personal preferences when you visit our site. This could include only showing you a popup once in your visit, or remembering your choice of plot type.

  • We also use third party advertisements on peditools.org to support our site. Some of these advertisers may use technology such as cookies and web beacons when they advertise on our site, which will also send these advertisers (such as Google through the Google AdSense program) information including your IP address, your ISP, the browser you used to visit our site, and in some cases, whether you have Flash installed. This is generally used for geotargeting purposes (showing New York real estate ads to someone in New York, for example) or showing certain ads based on specific sites visited (such as showing cooking ads to someone who frequents cooking sites).

  • You can chose to disable or selectively turn off our cookies or third-party cookies in your browser settings, or by managing preferences in programs such as Norton Internet Security. However, this can affect how you are able to interact with our site as well as other websites. This could include the inability to login to services or programs, such as logging into forums or accounts.

Friends of PediTools

Many thanks to the following individuals who provided support to PediTools between 2013 and 2022.

Patricia B.
Janelle L.
Janice S.

Adam G. Kera M.
Anita C. Mari M.
Ashley D. Marilyn D.
Barry P. Mohamad D.
Caroline H. Munish G.
Cecelia S. Nicole S.
Diane P. Olguyne F-F.
Enrique C-A. Phuong T.
Hayley S. Reema K.
Heather B. Rita C.
Jagjit T. Sagori M.
Jennifer M. Sanjay A.
Jodi W. Sharon F.
Julie D. Suzanne G.
Mama and Me, LLC

Donations to support development and maintenance costs were previously accepted via PayPal donation but as of 2022 have no longer been needed, so the option has been retired.