By: James Shomin

What is a PDH?

PDH stands for a Professional Development Hour which is the unit used to measure continuing education for a Professional Engineers. Most states require professional engineers to complete a certain number of professional development hours (PDH) in order to keep their state license current.

How do I find out the number of professional development hours I need?

The number of PDH credits required for your license depends on the state (or states) you are licensed in. has a full list of license requirements for Professional engineers, including PDH requirements broken down state-by-state.

Do I need to complete PDH courses every year?

PDH completion requirements are based on your states licensing cycle. Some states do require professional engineers to renew their license annually, however most states have a two or three year licensing cycle. For a complete list of licensing periods and renewal dates, check your state info on