What will my CD earn?

Deposit, APY and term → interest earned, maturity balance and the monthly-equivalent yield.

—
Interest earned
—
Maturity balance
—
Effective monthly yield
—
APY used in calculation
How is CD interest calculated?CDs compound daily and quote their yield as APY. Balance = P·(1 + APY/365)^(365·yrs). A $10k CD at 4.5% APY for 12 months earns about $460 — the APY already bakes compounding in.
APY or APR — which is quoted?Banks quote APY on CDs specifically because it's the honest effective yield including compounding. That lets you compare a 4.5% APY CD across banks regardless of compounding schedule.
What about early withdrawal?Most CDs hit you with a penalty (commonly 3-6 months of interest) if you break the term. The quote assumes you leave it to maturity — which is the point of the lockup.
Is this a forecast?It's the fixed, quoted return — the one financial product where the number doesn't lie. Variable/super-high APY promos may have fine print; the tool uses the APY you enter.