To convert $\frac{3}{8}$ into a decimal, simply divide 3 by 8:

$\frac{3}{8} = 3 \div 8 = 0.375$

So, $\frac{3}{8} = 0.375$ in decimal form.

Would you like further details on the division process or any other questions?

Here are some related questions you might find interesting:

1. What is the decimal representation of $\frac{5}{8}$?
2. How do you convert a fraction into a percentage?
3. What is the relationship between repeating decimals and fractions?
4. Can all fractions be expressed as finite decimals?
5. How do you convert a decimal back into a fraction?

Tip: To convert any fraction to a decimal, simply perform the division of the numerator by the denominator.