Feeling blue? You can now ask Google for help.

The search giant wants people with depression to seek treatment and will prompt US users when they search for depression-related terms: “Check if you’re clinically depressed.”

Users will then be directed to a clinically validated questionnaire, called a PHQ-9, to measure their level of depression, Google explained on its blog. The questionnaire is not meant to replace a mental health professional.

Google — which partnered with the National Alliance on Mental Illness (NAMI) to create the self-evaluation — hopes the confidential survey will spur more people to broach the subject with their doctor.

One in five Americans experience depression but less than half seek help, according to NAMI. Google seeks to change that by spreading awareness in order to help sufferers get a diagnosis and timely care.

“Statistics show that those who have symptoms of depression experience an average of a 6-8 year delay in getting treatment after the onset of symptoms,” Google wrote in the blog posting.

“We believe that awareness of depression can help empower and educate you, enabling quicker access to treatment,” it continues.

Rita J. Mercante, a psychotherapist practicing in New York City, said the survey could be a good first step toward dealing with depression.

“As millions of people use Google to answer many of their questions, particularly health-related issues, I am pleased to learn they are partnering with NAMI,” she told The Post. “Increasing awareness and decreasing stigmas related to seeking and participating in depression treatments is critical to improving the overall mental and physical wellness of all people.”

Jill Rubin, a licensed clinical social worker in Manhattan, says she’s had several patients come into her office after identifying with symptoms of depression they found online.

“I think the assessment form can certainly be quite helpful as a reference from which to explore,” she said. “It’s a guideline which can certainly help a patient understand and clarify as well as the mental health provider.”