Free online calculators for finance, health, math & science, engineering, and unit conversions. Fast, accurate, mobile-friendly.
Cost / License
- Free
- Proprietary
Platforms
- Online



Integral Calculator is described as 'Solve definite and indefinite integrals with ease using our free online calculator. Calculate double and triple integrals and get step by step explanation for each solution' and is a Calculator in the education & reference category. There are more than 100 alternatives to Integral Calculator for a variety of platforms, including Android, Windows, Mac, Web-based and iPhone apps. The best Integral Calculator alternative is Wolfram Alpha, which is free. Other great apps like Integral Calculator are SpeedCrunch, Fossify Calculator, Qalculate! and fxSolver.
Free online calculators for finance, health, math & science, engineering, and unit conversions. Fast, accurate, mobile-friendly.



Scalar is a powerful math engine and scripting language, that combines the simplicity of standard tools with the flexibility of scripting. It is much more than a calculator. Thanks to Scalar, defining arguments and functions has never been easier.








Find Standard Deviation for a set of data. Our simple and quick Standard Deviation Calculator will help you to find the solution and see the step by step explanation.

Standard Deviation Calculator is the most popular SaaS alternative to Integral Calculator.
Easy to use scientific and graphing calculator with no ads! Advanced feature like finding zeros and intersections, as well as trigonometric functions!



Online free calculators, math calculators, finance calculators, and many other useful calculators, with the steps of the calculation.

PayPal Fee Calculator is a simple and effective free tool that allows you to calculate your PayPal transaction fee quickly, easily and accurately, covering more than 80 countries worldwide.
Are you trying to figure out exactly how much VAT you will be charged when ordering online? Let's help you figure that out with our easy to use VAT calculator.

Ad-free calculator offering basic and scientific computations, including exponents, roots, fractions, and more, with intuitive single-line input, up to 10 decimal precision, viewable and editable calculation history, customizable color themes, and no paid features.



EdenMath is a scientific calculator which does standard arithmetic, probability, and trigonometric functions.

GlassCalc is a free, Windows calculator designed for quick input via keyboard. It forgoes the usual array of buttons for a single textbox where you can type an equation or mathematical expression, hit Enter, and get a result.




Calcul.io offers realtime calculator with notepad like interface and advanced features like unit conversions, currency rates or date time math.
