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10 Best Online Calculators for Solving Basic and Advanced Problems

Best Online Calculators
Written by Martins D. Okoi
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The ancestor of modern calculators, the Abacus (Latin for “board“) was a grooved board with movable counting labels made up of bones or stones. It reportedly dates back to 3000 BC in ancient Babylon until when it appeared again in 5th century Greece.

Fast forward to the 21st century and we don’t only have calculators that fit in small computers but advanced ones that don’t require users to have them installed on their machine.

Here are the 10 best websites for making calculations ranging from basic math operations to solving complex financial questions.

1. Desmos

Desmos is an advanced online scientific calculator. It features a tabbed user interface with buttons for making calculations in degrees and radians, angles, pie values, percentages, powers, and round numbers.

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It also features a tab for entering letters and special characters e.g. brackets directly. What’s even cooler is its settings menu which has options for braille mode, projector mode, reverse contrast (dark mode), etc.

Desmos Scientific Calculator

Desmos Scientific Calculator

2. web2.0calc

web2.0calc provides basic and advanced mathematical functions that can be operated directly from the keyboard as well as mouse buttons. It features a math formula display, support for large numbers, an equation solver, and calculator widgets.

It is powerful enough to solve problems in differential and integral calculus, number theory, standard functions, statistics, graphs, complex numbers, etc.

Web2.0calc Scientific Calculator

Web2.0calc Scientific Calculator

3. Good Calculators

Good Calculators is a project that offers a group of 300+ free, high functioning calculators for solving all sort of math and business problems. It features calculators for salary & income tax, retirement, contracts, loans, Forex, 2D and 3D shapes, GPA, logistics, sales & investments, human resource management, and several other calculation categories.

Free Online Calculators

Free Online Calculators

4. GeoGebra

GeoGebra is a feature-rich open-source online platform built to bring together algebra, geometry, spreadsheets, statistics, graphing, and calculus into a single easy-to-use package and It has since become a leading provider of dynamic mathematics software for supporting STEM education.

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It features an easy-to-use interface with an authoring tool for creating interactive learning resources in many languages for people around the world.

GeoGebra Scientific Calculator

GeoGebra Scientific Calculator

5. Calculator-1.com

Calculator-1.com is a large, easy, and convenient online calculator for use at work, school, and personal settings. It features functions for making not only basic math calculations but also interest rates on loans and mortgage payments, utility expenditure, and job bills.

Free Handy Calculator

Free Handy Calculator

6. Symbolab

Symbolab is an advanced online calculator for solving virtually any type of math problem. It has buttons and ready-made tabs for plotting graphs, tangents, matrices, multivariable calculus, sets, etc.

Using Symbolab is convenient because it has buttons that you can easily click to populate the problem field and then edit to hold problem values.

Advanced Online Calculator

Advanced Online Calculator

7. Meta Calculator

Meta Calculator is a comprehensive sophisticated online scientific calculator and equation solver. It features all the basic functions and buttons including ones for sin, cos, tan, sech, permutations and combinations, common multiples, etc.

It can also solve linear equations that can take up to 6 equations with either 2 or 3 variables and a memory button for future calculations.

Online Calculator with Equation Solver

Online Calculator with Equation Solver

8. Online-Calculator

Online-Calculator is an online calculator built with the idea that “everybody needs a calculator at some point”. Coupled with its fast loading ability, it offers users different screens for different types of calculations as modules such as a BMI calculator, distance converter, ring size converter, patio calculator, scientific calculator, weight converter, stopwatch, random name picker, etc.

Free Online Calculator

Free Online Calculator

9. Calculator.net

Calculator.net is a website that hosts 200+ different calculators with a sole focus of providing fast, comprehensive and free online calculators that are convenient to use.

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The calculators are grouped into Financial e.g. auto loan, inflation, payment, interest rate, salary, sales tax calculator; Fitness & Health e.g. calorie, BMI, pace, pregnancy conception, body fat calculators; Math e.g. triangle, standard deviation, percentage, fraction calculators; and Others e.g. GPA, concrete, subnet calculators, password generator; etc.

Finance Online Calculators

Finance Online Calculators

10. Bankrate

Bankrate is an independent, advertising-supported publisher and comparison service platform with a host of several online calculators that enable users to make finance-related calculations ranging from mortgages and loans to retirement plans and tax returns. The calculators are grouped into several categories for easy online calculations free of charge.

Financial Calculators

Financial Calculators

I’m certain that you’ve found at least 3 awesome online calculators today. Do you have alternatives that are awesome enough to be added to the list? Feel free to add your suggestions in the comments section below.

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About the author

Martins D. Okoi

Martins Divine Okoi is a graduate of Computer Science with a passion for Linux and the Open Source community. He works as a Graphic Designer, Web Developer, and programmer.