# Option premium calculator xls

You can of course start in row 1 or arrange your calculations in a column. When you have the cells with parameters ready, the next step is to calculate d1 and d2, because these terms then enter all the calculations of call and put option prices and Greeks. The formulas for d1 and d2 are:. All the operations in these formulas are relatively simple mathematics.

The hardest on the d1 formula is making sure you put the brackets in the right places. This is why you may want to calculate individual parts of the formula in separate cells, as I do in the example below:. First I calculate the natural logarithm of the ratio of underlying price and strike price in cell H Then I calculate the denominator of the d1 formula in cell J It is useful to calculate it separately like this, because this term will also enter the formula for d The two formulas are very similar.

There are 4 terms in each formula. I will again calculate them in separate cells first and then combine them in the final call and put formulas. Potentially unfamiliar parts of the formulas are the N d1 , N d2 , N -d2 , and N -d1 terms. N x denotes the standard normal cumulative distribution function — for example, N d1 is the standard normal cumulative distribution function for the d1 that you have calculated in the previous step.

DIST function, which has 4 parameters:. There is also the NORM. DIST, which provides greater flexibility. The exponents e-qt and e-rt terms are calculated using the EXP Excel function with -qt or -rt as parameter. Here you can continue to the second part, which explains the formulas for delta, gamma, theta, vega, and rho in Excel:. Continue to Option Greeks Excel Formulas. Or you can see how all the Excel calculations work together in the Black-Scholes Calculator.

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Macroption is not liable for any damages resulting from using the content. No financial, investment or trading advice is given at any time.

Home Calculators Tutorials About Contact. Tutorial 1 Tutorial 2 Tutorial 3 Tutorial 4. The Big Picture If you are not familiar with the Black-Scholes model, its parameters, and at least the logic of the formulas, you may first want to see this page. There are 4 steps: With the inputs in our example 45 and 49 , cell C8 should now be showing 4.

You can test different values for the underlying price input and see how the formula works. For any underlying price smaller than or equal to 45 it should return zero; for values greater than 45 it should return the difference between cells C6 and C4. This is again very simple to do — we will just subtract cell C5 from the result in cell C8. The entire formula in C8 becomes:. Cell C8 should now be showing 1. You can again test different input values.

For put options the logic and formula is almost the same, with just one little difference: The put option profit or loss formula in cell G8 is:. Now we have created simple payoff calculators for call and put options. However, there are still some things we can improve or add to make our spreadsheet more useful. Furthermore, our calculator only shows profit or loss per share, while many people are actually more interested in total dollar profit or loss, especially when working with positions of multiple option contracts.

Therefore, we should improve our calculations to also consider direction long or short , position size number of contracts and contract size number of shares represented by one option contract. We will merge our call and put calculations in the next part of the tutorial. If you don't agree with any part of this Agreement, please leave the website now. All information is for educational purposes only and may be inaccurate, incomplete, outdated or plain wrong.

Macroption is not liable for any damages resulting from using the content. No financial, investment or trading advice is given at any time. Home Calculators Tutorials About Contact.

Tutorial 1 Tutorial 2 Tutorial 3 Tutorial 4. For example, it answers the following question: Payoff Formula Inputs and Outputs In the above example you can identify several inputs that our payoff formula will take — they are the numbers we already know: Preparing the Cells In an Excel spreadsheet, we first need to set up three cells where we will enter the inputs, and another cell which will show the output. Call Option Value Formula Now we have the cells ready and we can build the formula in cell C8, which will use the inputs in the other cells to calculate profit or loss.