MathSolver — Free AI Math Solver with Step-by-Step Explanations

What is MathSolver?

MathSolver is a web-based AI math solver aimed at students from middle school through college, including AP Calculus, and at parents helping with homework. It produces step-by-step explanations for algebra, geometry, trigonometry, precalculus, calculus, statistics, and word problems, and also handles physics and chemistry. Solutions show the answer first, then numbered steps that name the rule applied and explain the reasoning in plain English.

The site positions itself against calculators and chatbots by combining solving with built-in verification: answers are self-checked — for example, by substituting results back into the original equation — and users are told upfront that AI can make mistakes and that checking its work is part of the workflow.

How MathSolver Works

Input is flexible. You can type a problem, paste it as text, snap a photo, paste a screenshot with Ctrl+V, or upload PDF pages (PDF requires a paid Plus or Pro plan). Photo input produces a transcription you can review and edit before re-solving, which matters for geometry problems where diagram labels are easy to misread.

A "Think harder" mode runs a deeper reasoning pass that takes two to three minutes and is designed for long or competition-style problems; it consumes one deep solve instead of a standard solve. After solving, a free account keeps a history under "My solves," and topic-focused calculators — solve for x, quadratic, factoring, derivative, integral — support practice. Explanations are available in English, Spanish, French, German, and Portuguese.

Main Features

• Step-by-step solutions — the answer appears first, followed by numbered steps with named rules and plain-language reasoning.
• Multi-format input — typed text, pasted text, photos, Ctrl+V screenshots, and PDF pages on paid plans.
• Editable photo transcription — review and correct what the AI read before it solves, reducing misread-diagram errors.
• Deep-reasoning mode — a 2-3 minute "Think harder" pass for long or competition-style problems.
• Answer self-checking — results are verified, such as by substituting them back into the original equation.
• Topic calculators and history — practice calculators per topic plus a free-account solve history.

Pricing

MathSolver's free tier is concrete. Without an account you get 3 solves per day, 1 of them a photo solve, up to 30 per month. A free verified account (a non-temporary email) raises this to 5 solves per day, 2 photos, up to 100 per month. Cached answers do not count against the allowance, and local calculations, hints, and worked examples are free. Deep reasoning uses one deep solve; photos and PDF pages each consume one daily photo solve.

Two paid tiers exist — Plus and Pro — which unlock PDF upload and higher limits. Their prices are not published on the main page; the site links to a separate pricing page. The FAQ notes that free solving is subject to availability.

Common Use Cases

• Homework help — photograph a worksheet problem and study the numbered steps rather than just copying the answer.
• Exam preparation — work through calculus and precalculus problems with derivative and integral calculators for targeted practice.
• Checking handwritten work — paste a screenshot of your solution and compare it against the AI's verified steps.
• Parents helping with homework — plain-language steps make it easier to explain a problem you have not seen in years.
• Competition practice — the deep-reasoning mode targets longer, multi-step problems.

Limitations

The quotas bite. Three solves a day without an account, or five with a free account, will not cover a full homework session; cached answers and hints are free but solving new problems is not unlimited. Plus and Pro pricing is not shown on the main page, so cost comparison requires an extra step. PDF upload is locked behind the paid tiers entirely. The site itself warns that AI can make mistakes, that its self-checking is not an independent review, and that photo reads — especially geometry diagram labels — should be verified before trusting them. Free solving is also subject to availability. Finally, the site's own guidance is that the tool should be used to learn, not to submit AI-generated work as your own.

Summary

MathSolver is a competently documented step-by-step math solver whose main strengths are input flexibility (photos, screenshots, PDFs), transparent free-tier quotas, and honest caveats about accuracy. The five-language explanations, self-checking, and topic calculators make it more study-oriented than a bare answer machine. Its limits are the daily caps on the free tier, unlisted prices for Plus and Pro, and the PDF paywall. For students who need a few worked solutions a day and want to understand the steps, it delivers; heavy users will need a paid plan whose price they will have to look up.