Free tool
Theta.
What time takes out of the premium, day by day.
Theta per day$0.04 / sh
Per contract$4.40 / day
Model premium$2.52
How it works
Black-Scholes with a 4% rate and no dividend, holding price and IV fixed. Decay is slow early and steepest in the last few weeks, which is why sellers often manage well before expiry.
Educational calculator, not a recommendation. Options involve risk.
Score it with your own rules.
Score it with your own rules