Happy Pi Day 2016! What is Pi Day and why is it so special? Today is March 14, 2016. The date resembles the ratio of a circle's circumference to its diameter which is 3.14159265359, 3.14 for short and this year math lovers are calling it "Rounded Pi Day"... rounding up those four digits. It also spells huge savings.

While Pi Day is traditionally known for deals on pizza and pie itself, lately it's become a giant sale day, with many tech companies capitalizing on the momentum.

The pizza deals have a spin on the whole 3.14 fun but on the tech front, the deals are simply gigantic sale days.

Before we get to the deals, if you want St. Patrick's Day freebies beyond belief (the single best freebie day of the year), join this deal list and you'll get hoooked up!

Today's Best Sales:

79% Off GOgroove Kids Collectible Bluetooth Speakers + Free Prime Shipping
Was: $69.99
Now: $14.99
**Full video demo right here. Night light (smaller speaker model) deal right here.
**Non-Prime Members can score free shipping with this free 30 day trial

Up To 70% Off SanDisk Flash Drives and SD Cards
**Non-Prime Members can score free shipping with this free 30 day trial

$3.14 Pizza At Blaze Pizza Today
**Check to see if there's a location near you

Free Pizza Hut Pizza For Math Experts
**Beginning at 8am EST, answer math world problems correctly on The Pizza Hut blog and you could win free pizza for 3.14 years.

$3.14 Discount On Sweet Pies, $2 Off Pizza At Whole Foods
**Valid at select participating locations