Happy Pi Day 2018! If you're looking for great discounts on pizza, check out the video above. But today is not just about pizza deals!

What is Pi Day and why is it so special? Today is March 14. The date resembles the ratio of a circle's circumference to its diameter, which is 3.14159265359, 3.14. It's also Albert Einstein’s birthday (and my wife’s birthday.) Pi Day is a popular topic of discussion online, so online stores create “Pi Day” deals to intercept search traffic and reward shoppers with great deals.

While Pi Day is traditionally known for deals on pizza and pie itself, lately it's become a great sale day with many other companies capitalizing on the momentum. For tech, look at this:

$31.40 Off Top-Rated Wireless Over Ear Hi-Fi Headphones + Free Shipping

Was: $96.39

Now: $64.99

$31.40 Off iClever Wireless In-Ear Bluetooth Headphones + Free Shipping

Was: $62.80 (yesterday)

Now: $31.40 (today only)

76% Off Coredy HD Dashcams With Night Vision + Free Shipping

Was: $129.99

Now: $31.41

$31.41 Off Top-Rated Blenders + Unbreakable Pitchers + Free Shipping

Was: $196.99

Now: $165.59

Top Pi Day Pizza Deals:

Boston Market: Buy one rotisserie chicken pot pies and drink, and get one pot pie free Wednesday with coupon from here.

Blaze Pizza: $3.14 build your own pies. Available in-store only only with a limit of one per person.

Papa Murphy's: $3.14 large thin crust one topping pizzas for online orders at participating locations.

Whole Food Markets: Take $3.14 off large bakery pies.

The Pizza Hut deal originally mentioned in the video was posted by RetailMeNot with a coupon from their website that has since been removed.

Matt Granite is a freelance consumer reporter who produces stories and video for this Station, Amazon Live and others. He is not compensated by the brands featured here. This Station and its parent company may receive a share of the revenue from the site that sells the product if you purchase one of these products using the link on this page.