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4 Best Big O Notation Calculators To Find Code Complexity

This post was last Updated on by Himanshu Tyagi to reflect the accuracy and up-to-date information on the page.

Hey! programmer, are you searching for the 4 Best Big O Notation Calculator Websites To Find Code Complexity? If yes, then you are on the right page. In this article, we have shared a list of the 4 best online Big O Notation calculators.

Using these tools, you can quickly discover any code’s complexity. The best part is that some Big O Notation calculators support multiple programming languages such as Java, Python, C#, etc.

To find code complexity, all you have to do is paste your programming code, and these tools will provide the Big O Notation as output.

Another exciting thing about these online programming tools is that they correctly explain the code complexity output.

So, if you want to learn how big O notation works, these tools will be convenient. However, a few Big O Notation calculators are accurate for specific code snippets. In this guide, we have covered all areas for you so that you can pick the best Big O notation calculator for yourself.

“Big O Notation,” does that scare you away? Big O Notation is a horror story for computer science students. But don’t let it overwhelm you. It is an easy-breezy take that doesn’t require you to be a maths geek.

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What is Big-O Notation?

Big O notation is used in software engineering and computer science to classify each method according to space or time needs. It predicts how an algorithm will become more complicated when the input size is increased.

It allows you to calculate the time or spatial complexity of any function. We can forecast how effectively an algorithm would operate when integrated into actual logic using big O notation.

Big-O notation is the linguistic tool that is utilized to discuss the time complexity of an algorithm and the memory requirements of an algorithm (space complexity).

The Big-O notation can indicate the finest, worst, and average situations of an algorithm’s processing time. This talk will primarily focus on the relationship between O’s and time complexity.

As a software developer, you’ll discover that most Big-O conversations center on an algorithm’s “upper-bound” running time, also known as the worst-case scenario.

It’s crucial to remember that the “running time” calculated using Big-O notation does not correspond to actual time (e.g., seconds, milliseconds, microseconds, etc.).

The processor, language, and runtime environment are not considered in the analysis of running times.

Alternatively, we might define time as the number of operations or steps required to solve an n-dimensional issue. In other words, Big-O notation is a technique to monitor the input size’s runtime growth rate.

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4 Best Free Big O Notation Calculator Websites to Calculate Code Complexity

Dear programmer, brace yourself, as here I will pin down a pathway to ace the fundamentals of Big O factorial time complexity.

Let me untangle the complexities of your algorithm by lining down the 5 Best Big O Notation Calculator Websites To Find Code Complexity.

1. Shunnarski Big O Notation Calculator

shunnarski big o notation calculator

The finest free resource for calculating code complexity while on the fly is the Shunnarski Big O Notation Calculator. This open-source tool allows the analysis of languages similar to C, C++, Java, C#, and JavaScript.

You can construct an algorithm in one of the supported programming languages and submit it here to evaluate its time and space complexity. You can use it as often as possible, and the results are generated quickly.

Merely choose a programming language from the list after that. You paste the code after ensuring that it is clear and error-free.

When you finally press the Get Big O! button, the results will be displayed. That’s all there is to it. You can continue to use this tool in this manner, and potential future updates may include support for additional programming languages.

Use this big o notation calculator here.

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2. Big O Calc

big o calc - big o notation calculator

Big O Calc is a simple online Big O Notation calculator. You can use it to find the time and space complexity of various code snippets like Java, Python, C#, C++, and many others.

The best part is that it offers an intuitive interface and explains how it calculates the Big O Notation of the input code snippet. However, it supports several characters to check the time and space complexity.

So, if you want to calculate Big O Notation of short coding snippets, then Big O Calc will perform the job effortlessly. Otherwise, you should check out other tools on this list if your code contains more numbers of lines.

To use this tool, visit the link below and paste the code snippet. After that, click the “Calculate” button. After that, it provides the output in a few seconds, as shown below.


big o calc time and complexity output

As you can see in the above screenshot, the output specifies the program’s time and space complexity or Big O Notation. Along with this, it also explains what affects the Big O Notation of the code.

Use this big o notation calculator here.

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3. Wolfram Alpha

online big o notation calculator websites

You can use a straightforward tool offered by Wolfram Alpha called the Big-O Domination Calculator. However, this tool functions somewhat differently.

It examines any two algorithms instead of reviewing the code to determine complexity. It helps you select which algorithm is faster and more effective by letting you enter the parameters of the algorithms you wish to compare.

This tool is currently in beta testing, so some inputs may cause it to fail. However, I am confident it will perform admirably when it is finished.

Click the above link to open this tool, and then use it. It doesn’t require registration or a Wolfram account to use.

You enter the parameters for your algorithms in the widget before clicking the submit button. It will determine the complexity and demonstrate the dominant algorithm. That’s all there is to it. You can continue to use this tool in this manner.

Use this big o notation calculator here.

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4. AProVe

aprove big o notation calculator websites

Another free service that makes it simple to determine code complexity is AProVE. But in this case, only Java bytecode is supported. It requests Java code from you, executes it, and then merely displays the complexity.

That’s all there is to it. You can use additional tools to examine code execution on the website, but they are designed for experienced users only. Check any Java code for Big O! notation quickly; it is simple.

To access this utility’s main webpage, click the link above. Just submit the data after entering a little Java code in the block. Either plain text or HTML can be chosen as the output format.

big o notation calculator output

The code you provided will be processed in a few seconds. It will then eventually display the determined code complexity to you. In the screenshot up top, you can observe it in use.

Use this big o notation calculator here.

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Those mentioned above are a few websites that guide your journey to compute the Big O notation if you seek the most incredible free resources.

However, you should be aware that only some applications can be programmatically examined to determine their complexity, so the websites I’ve listed here will only function on some.

For primary or linear algorithms, you can test them out, but only for simple ones. The complexity will have to be determined manually.

Himanshu Tyagi
Himanshu Tyagi
Hello Friends! I am Himanshu, a hobbyist programmer, tech enthusiast, and digital content creator. Founder Cool SaaS Hunter. With CodeItBro, my mission is to promote coding and help people from non-tech backgrounds to learn this modern-age skill!

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