Risk Calculator

Created by Bogna Szyk
Reviewed by Małgorzata Koperska, MD and Steven Wooding
Last updated: Aug 22, 2022

If you're trying to choose between two options for an investment, this risk calculator will surely help you! You can use it to assess the risks associated with each option and decide which one is safer.

Naturally, if you don't mind risk, you should choose the option with the higher return on investment!

Read on to learn how to calculate risk and to discover the applications of the risk formula.

The risk formula

Very often, we tend to over- or underestimate the risks we take. For example, dying in a car accident is statistically much more probable than a plane crash, yet the fear of flying is still much more frequent than the fear of driving.

Luckily, there is a way of quantifying risks, especially financial risks. All you need to do is apply the following risk equation:

risk = probability × loss

The probability refers to the likelihood of failure. For example, you might invest a certain amount of money in stocks and estimate the chance of losing is 12%.

The loss, on the other hand, is the damage you need to bear in the case of failure. For instance, if you really lose the money you invest, this cost might amount to $5,000.

How to calculate risk: an example

Let's say you are choosing between two investment options. Option A guarantees to return fifty percent of the $2,000 you invested no matter what the market situation is, but the probability of failure is equal to 12%.

In the case of failure with option B, you will lose $2,000, but the probability of loss is lower – only 7%. In the case of success, both options will bring you roughly the same profit. Which one should you choose?

  1. Calculate the risk associated with option A:

    risk = 12% × $1,000 = $120

  2. Calculate the risk associated with option B:

    risk = 7% × $2,000 = $140

  3. Compare the risks. In this case, it's less risky to invest in option A.

Remember that this risk calculator doesn't take into account the potential profit! If the ROI of option B is much higher, you might decide on it despite the higher risk.

If you liked this calculator, make sure to check out the relative risk calculator, too!

Bogna Szyk
Option A
Probability of failure
Loss (if failure occurs)
Option B
Probability of failure
Loss (if failure occurs)
Check out 22 similar risk & probability calculators 🎲
AccuracyBayes theoremBirthday paradox… 19 more
People also viewed…

Circle skirt

Circle skirt calculator makes sewing circle skirts a breeze.

Descriptive statistics

The descriptive statistics calculator will thoroughly analyze your data set using more than 20 different descriptive statistics spread over various subcategories of statistical measurements, such as central tendency and dispersion.


The MSE calculator can quickly find the mean squared error of your sample and provide you with intermediate calculations. SSE and RMSE are available as well!

Steps to calories

Steps to calories calculator helps you to estimate the total amount to calories burned while walking.
Copyright by Omni Calculator sp. z o.o.
Privacy policy & cookies
main background