Estimate option values, Greeks, and exposure fast. Compare calls, puts, and sensitivities with clean practical insights.
Use annualized rates and volatility in percentages. Time to expiry should be entered in years.
| Spot | Strike | Rate % | Volatility % | Time | Dividend % | Call Price | Put Price |
|---|---|---|---|---|---|---|---|
| 100 | 100 | 5 | 20 | 1.00 | 0 | 10.4506 | 5.5735 |
| 120 | 110 | 4 | 25 | 0.75 | 1 | 17.4812 | 4.6038 |
| 85 | 90 | 3 | 30 | 0.50 | 0 | 5.0034 | 8.6638 |
Call Price: C = S e-qT N(d1) - K e-rT N(d2)
Put Price: P = K e-rT N(-d2) - S e-qT N(-d1)
d1: [ln(S/K) + (r - q + σ²/2)T] / [σ√T]
d2: d1 - σ√T
Delta: Measures price sensitivity to the underlying asset.
Gamma: Measures the rate of change of delta.
Theta: Estimates daily time decay of option value.
Vega: Measures sensitivity to volatility changes.
Rho: Measures sensitivity to interest rate changes.
Enter the current asset price in the spot field. Add the desired strike price for the option contract.
Provide the annual risk-free interest rate and the annualized implied or expected volatility as percentages.
Enter time to expiry in years. For six months, use 0.5. Add dividend yield if the underlying pays dividends.
Select the number of contracts and choose long or short position. Press the calculate button to view results.
Review theoretical call and put values, Greeks, intrinsic values, time values, and contract exposure. Export results as CSV or PDF when needed.
It estimates theoretical European call and put prices using the Black-Scholes model. It also shows d1, d2, Greeks, intrinsic value, time value, and contract-level exposure for long or short positions.
It helps traders and analysts compare market premiums with theoretical values. This can support pricing checks, volatility analysis, hedging review, and option sensitivity assessment across different contracts.
The formula is built on annualized inputs. Entering time in years keeps volatility, rates, and dividend yield aligned correctly. For one month, use about 0.0833 years.
Delta estimates how much an option price may change when the underlying asset moves by one unit. Call delta is usually positive, while put delta is usually negative.
Theta represents time decay per day in this calculator. It shows how option value may change as expiration approaches, assuming other variables remain constant.
Yes. You can enter a continuous dividend yield. The calculator discounts expected asset growth accordingly, which affects both option prices and the Greeks.
No. Black-Scholes is mainly designed for European-style options. American options can allow early exercise, which may require binomial or other numerical models.
Real market prices can differ due to supply, demand, liquidity, transaction costs, volatility assumptions, interest rate changes, and model limitations such as constant volatility assumptions.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.