About CalculatorX

CalculatorX helps you get from a question to a trustworthy answer—fast.

Our tagline is simple: Calculate anything. Verify everything. Every tool is built to show not only a result, but the formula, assumptions, and units behind it, so you can check the math instead of trusting a black box.

What you will find

• Calculators — electrical power, Ohm’s law, finance, math, and other practical solvers
• Converters — units for length, temperature, energy, and more
• Dev — Base64, URL codecs, color tools, and developer utilities
• Apps — lightweight browser utilities such as notepad, timers, and charts

Most tools run entirely in your browser. No account. No upload of your inputs for the calculation itself.

Who it is for

Students, engineers, finance users, developers, and anyone who needs a quick, inspectable answer. Pages are written so both people and AI agents can read the method, not just the number.

How to start

Use search (⌘K), pick a category from the homepage, or jump straight to a popular tool like Amps to VA or temperature conversion.

Developer platform (beta)

Deterministic engines powering many calculators are also available over HTTP and MCP for agents and integrations. Start here: CalculatorX Developers. Agents should follow For AI agents.

Who is responsible for the content?

CalculatorX is responsible for the calculator pages and software published under its name. An organizational byline identifies that responsibility. It does not imply that an external expert has reviewed a page.

Our official GitHub account is CalculatorX-AI. Its public profile identifies CalculatorX and links back to this website.

Mathematical references, implementation methods, automated verification, internal review, and named expert review are separate kinds of support. Each calculator's specification and Trust summary show the applicable sources, calculation version, verification scope, and production status. See the review policy for how to interpret those claims.

How are changes and corrections recorded?

Content update dates describe edits to page explanations. Calculation versions describe the computational contract. Review dates and verification records identify their own scope; an editorial update does not renew an expert review or a CVP verification.

The Updates ledger records calculator changes, including previews awaiting release. Published verification corrections are recorded in CVP errata. To describe a suspected error, include the calculator URL, inputs, calculation version, observed result, and an independent reference.

Send questions or corrections to hi@calculatorx.com. The Contact page lists the information that helps us reproduce an issue.