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Best free online calculators for simple and complex calculations
As a science or engineering student, you need a consistent calculator to assist you in finding solutions and analyze complex calculations and these days, your knowledge is not limited to just traditional handheld calculators at all now because there are many great calculator applications online that deliver practically the same features and function but don’t cost a dime.
So, how does it sound to use a calculator that don’t get old, faulty or even obsolete? Today, we will be talking about the top best Online calculators for students that you can start using today for both your simple and complex calculations and they are completely free.
Choosing the Right Calculator
You need to balance your needs along with your budgets when deciding which calculator to use and to do that, we highly suggest you follow the 5 steps below.
1. Identify Your Demands
Yo need to first generate a checklist of all the functionalities you want your calculator to include. Will you be needing a high-resolution colour device to easily plot multiple graphs at the same time? How about a powerful processor to process your results? You will be able to immediately figure out which calculators are the best for what you want to use it for and what is not by highlighting as many specifications as possible.
Also, if you need your calculator to work without an internet connection 0r you simply want to use the calculator in an area with poor or no internet network, an online calculator might not work for you. On the other hand, getting a physical calculator if your budget is relatively tight but you need a calculator that can help you with computational physics or advance calculations, an online calculator app might be the only feasible choice.
2. Make the decision on a Budget
Traditional handheld calculators can be very expensive. For instance, the Texas Devices TI-84 Plus CE graphing calculator, among the most commonly utilized graphing calculators with a colour display costs around $140, which is not an irrelevant sum of money for a learner.
This is good news because most of the student calculator apps on the internet can be downloaded for free. For those who need a physical calculator, you can borrow one from a friend or a kind dude for the days you needed it.
3. Compare the accessible calculators
Once your needs and budget are all listed, it is time to choose a couple of calculators. You should carefully review the specs of the calculator that you have selected before deciding which one to purchase. Here, your goal should be to reduce as much as possible the selection of calculators that fit your needs.
4. Watch well-reviewed and demonstrable videos
Almost all the differnet types and brands of calculator review are now available online both in articles and videos. There are even Channels on youtube devoted solely to calculators, so you should have no difficulty finding more details about the ones you might be interested in.
Just because a calculator looks great on in pictutres does not mean that it will also be easy to use so, get to know about the device through a video demonstration or a video review.
5. Please reconsider your purchase
Make sure you actually need a traditional handheld calculator before you go for it. There is a low probability that an expensive calculator would suit your needs better than an average calculator or even a web based calculator app. If you choose to try an online calculator, you can pick one of the below calculators:
Top 9 online free calculators for students
Picking the best calculator apps online is very difficult because there are so many good alternatives out there so to save you time, we have compiled a list of the top best free calculator apps online in 2025.
1. Calculator 1
Calculator 1 is a perfect instructional calculator app since its design closely resembles physical handheld calculators and as a result of this, it feels instantly familiar to every user. It is available on any device that can load a webpage over the internet including desktops, smartphones and tablets as it even supports the keyboard shortcuts. If the page’s font size is an issue on your device you can change the size to fit into your preference.
Calculator 1 can also work as a scientific calculator, a simple calculator, a root calculator, and also proportion calculator. All the functions are there so you can simply select the options you need for your calculator.
2. Meta Calculator
Meta Calculator can come in handy whenever you need more than one calculator. The online calculator has is a great way of helping you to understand and analyse great and complex issues.
Research has shown that Meta Calculator is the most advanced scientific calculator app. It has a memory feature for storing math equations for future quick reference and Meta Calculator has plenty of tutorials so you can master all of its features.
3. Desmos
Desmos is a smart calculation app that makes math easier. You can start with just high-school or secondary school basics and switch on to university calculus and scientific functions later. The knowledge centre area on the platform provides plenty of useful information about the calculator app. Desmos provides an engaging and interactive way to teach mathematics to students.
4. Google Calculator
This Hidden calculator can be viewed by typing the word calculator in Google search page. The calculator can handle arithmetic, operations, how to calculate the value of physical constants, base conversion, and even graph complicated equations with ease.
Besides the calculator that lives on the search page, Google also has a calculator app, which is called simply “Calculator”. Google Calculator can perform basic arithmetic operations and also do scientific calculations such as trigonometric, logarithmic, exponential and many more as it also offers a very intuitive and smooth interface with a 4.4 out of 5 star rating among its users.
5. Calculator.net
Find out how old a person or an object is using this straightforward age calculator. How long something has been around is measured in years, months, and days using the Gregorian calendar. Most of the world now follows the Gregorian calendar, which was established by Pope Gregory XIII on October 15, 1582 and you can simply get the age of any thing by simply entering the date field on this page and you get the age in seconds.
6. Omni calculator
Omni calculator is the web’s largest collection of free online calculators covering every area of interest. For example, using Omni Calculator, you can calculate how much money you save by quitting smoking or how many hours you spend on emails every day.
Students will find it useful to include interesting facts in their assignments or researchs. It will also teach them more about the society we live in. Omni is expanding rapidly its collection of free calculator apps online, striving to remain the largest collection of online calculators and I must confess this is a really food calculator.
7. Casio calculators
I doubt if any high school or secondary school student doesn’t know Casio as it is one of the largest manufacturers of portable calculators in the world. Keisan (a Japanese word for calculation) is its online calculator application for those who need to do an equation on the fly. With Keisan you can make complex mathematical calculations. The calculator application is not very user-friendly and is challenging in terms of calculations but can be highly valuable once mastered.
8. WolframAlpha
Wolfram alpha formula solver. Wolfram Alpha doesn’t look like the other calculator apps on our list. Instead, it is a machine that computes answers from external information source. This is a popular mathematics tool because it has features of numerous types of a mathematical systems.
When WolframAlpha solves any math problems, it will explain how you get there step by step, helping you learn and improve your skill in math.
9. Symbolab Math Solver
Symbolab Math Solver is a massively-impressive calculator app that guarantees step-by-step solutions to algebra, trigonometry, and calculus. It is actually an effective way to acquire math skill as it motivates students to find the solution.
You can test yourself in pre-algebra, algebra, matrices, functions, trigonometry, calculus, word problems and numerical analysis. You can take Symbolab mobile and work on MathSolver offline.
Above are the top best calculators you can use online for your calculations, use the comment section if you have questions or feedback. Also, share this article to students who you think might find this article helpful.
