This little website shows you the pH of various acids, bases, food products, bodily fluids, cleaners, and more!
Here's a random substance:
pH of Sodium Hydroxide
Chemical formula: NaOH
Also known as: Caustic soda, Lye, Ascarite, White caustic, Sodium hydrate
Sodium Hydroxide is Basic
At concentration of 1 mM, it has a pH of 10.98
At concentration of 10 mM, it has a pH of 11.95
At concentration of 100 mM, it has a pH of 12.88