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Calculate the profit or loss of a bought call or put option at expiry, plus its breakeven price and return on premium.
Calculates the profit or loss of a bought (long) call or put at expiry. A call pays out the amount the underlying finishes above the strike; a put pays out the amount it finishes below. The premium you paid is subtracted from that payoff — anything beyond it is profit, and the most you can lose is the premium.
Call payoff per unit = max(0, Expiry price − Strike)
Put payoff per unit = max(0, Strike − Expiry price)
P&L = (Payoff − Premium) × Contract size × Contracts
Breakeven = Strike + Premium (call) / Strike − Premium (put)Contract size is the amount of underlying per contract (1 on most crypto options venues). The result is the value at expiry; before expiry an option also carries time value, so market prices will differ from this intrinsic calculation.