Paul's Online Math Notes provides free, downloadable notes for algebra, calculus and differential equations.
MathPortal
Math Portal provides step-by-step calculators and solvers for equations, expressions, matrices and complex numbers.
About MathPortal
MathPortal is a website that offers more than 80 online calculators and solvers that show steps for solving math problems. The calculators cover polynomials, quadratic and other equations, calculus, rational and radical expressions, sequences and series, geometry, 3D geometry, complex numbers, systems of equations, vectors and matrices, trigonometry, number operations, financial calculations, statistics, and analytic geometry. The site also lists math lessons, formulas, and tests in its navigation.
The homepage describes the site's owner as mathematician Miloš Petrović, who states that he designed the site and wrote the calculators, lessons, and formulas. The homepage lists HW Help as a paid service, but it does not give prices for it or for any other part of the site.
Key features
- Step-by-step solvers for polynomial, quadratic, rational, and trigonometric equations
- Calculators for limits, derivatives, and integrals
- Matrix and vector tools, including determinants, inverses, eigenvalues, and eigenvectors
- Complex number calculators for division, simplification, modulus, inverse, and root
- Geometry and 3D geometry calculators for plane shapes and solids
- Statistics and financial calculators, including regression, amortization, and annuities
Best for: Students and others who need step-by-step help with a specific math problem in one of the topics the site covers.
Good for
- Offers more than 80 calculators across algebra, calculus, geometry, matrices, statistics, and finance.
- The site states that its owner, mathematician Miloš Petrović, wrote the calculators, lessons, and formulas.
- Includes math lessons and formulas alongside the calculators.
Watch out for
- HW Help is listed as a paid service, and the homepage does not state its price.
MathPortal at a glance
- Website
- mathportal.org
- Category
- Education & Learning › Mathematics Learning
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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MathPortal FAQ
Who created the calculators on MathPortal?
The homepage says the site's owner, mathematician Miloš Petrović, designed the site and wrote the calculators, lessons, and formulas.
Is HW Help free?
The homepage lists HW Help as a paid service. It does not give pricing details.
How can I contact the site owner?
The homepage says visitors can write through the site's contact form or send an email to the owner.
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