SAN ANTONIO  — Grab your calculators because March 14 marks Pi Day.

Pi is known by the Greek letter “π” and is the symbol used in math to represent a constant, the ratio of the circumference of a circle to its diameter, which is approximately 3.14159.

In honor of the the infinite digits, there are several celebrations, freebies and discounts around the city.

EVENTS

Pi Day Celebration at Ranger Creek - Celebrate National Pi Day with craft beer, pie, and pie-inspired cocktails at Ranger Creek.

Pi Day at the Witte Museum - In honor of one of the museum’s favorite holidays, they're offering several pi-related activities and demonstrations.

Eddy's Tavern National Pi Day Celebration - Several $3.14 deals on pool and liquor.

DISCOUNTS

Boston Market – Use this printable coupon to get this deal: Buy one Pot Pie and a drink, and get one Pot Pie free. March 14 only.

Cici’s PizzaBuy 1 Regular Price Buffet, Get a Second Buffet for $3.14. At participating locations on March 14.

Papa Murphy’s – Pi Day Special: Large Thin Crust 1 Topping Pizza $3.14 March 14 only at participating locations. Online only.

Pizza Hut – Get a large two-topping pizza for $7.99, or two medium two-topping pizzas for $5.99 each. These deals are good for online orders only.

Urban Bricks Pizza — Urban Bricks is offering all pizzas for $3.14 on Pi Day. The offer is good for dine-in orders only.

Whole Foods – Get large bakery pies for a $3.14 discount on March 14, while supplies last. See more details.