Base Math

Base Math helps you practice mental arithmetic and number-base conversion in bases 2 through 16. Choose mental math practice for addition, subtraction, multiplication, division, or Random operation practice. You can also convert numbers between any two bases, including binary, decimal, and hexadecimal. Pick Easy, Medium, or Hard difficulty, choose a specific base, or use random base practice. Base Math includes 10 free questions per day. Upgrade to Base Math Pro with a one-time purchase for unlimited daily practice.