Engineering knowledge you can run.

Explore mathematical and engineering methods, test them interactively, plot the results, and download working C/C++ implementations.

Try a live calculator ↓ Browse the library

No tracking or analytics cookies, no ads — we don't watch what you calculate.

Not a screenshot

A real calculator, right here.

Every function on CodeCogs ships with an interactive calculator like this one. Change a value, drag a parameter into range mode, and the graph redraws instantly — this one is live.

See the full Rosin‑Rammler distribution page →

yoursite.com
Embed anywhere

Drop it into your own site.

That's not a mock-up — it's the same widget as the calculator above, running a second, independent copy of itself inside this page, and it's genuinely animating: Dm is sweeping on its own, every curve you see is a fresh WASM computation, ten times a second. No backend, no build step: paste two lines into any site, blog post or set of course notes.

<div class="codecogs-embed" data-module="359" data-anchor="fn-rosin-cdf" data-mode="graph"></div>
<script src="https://codecogs.com/assets/js/embed.js"></script>

Have your own C/C++ function? Upload it and CodeCogs generates the calculator interface for you.

Under the hood

Compiled once, runs entirely in your browser.

Every function's real C/C++ source is compiled to WebAssembly in a sandboxed build service — not reinterpreted, not simulated, the actual code. The embed above is genuinely offline-capable: after that first compile, nothing about running it needs CodeCogs, or even a network connection, again.

1

Compile

The module's C/C++ is compiled to a small .wasm binary the first time anyone asks for it, then cached — the compile itself never runs twice for the same code.

2

Fetch once

The calculator or embed widget downloads that compiled module a single time per visit — a few tens of kilobytes, cached immutably by your browser across visits too.

3

Run offline

Every calculation after that — one value, a ranged graph, or the continuous animation above — is a direct function call inside your browser. No server round trip, no network needed: it keeps working even if your connection drops.

Building a product around one of these calculators? Commercial clients can download the compiled WASM module directly, to bundle and ship as part of their own application — no embed script or CodeCogs branding required. Get in touch.

1

Learn

Understand the mathematics, algorithm and engineering principles behind each method.

2

Calculate

Run the real implementation online and experiment with your own values.

3

Visualise

Plot results over a range and see how the function actually behaves.

4

Build

Download tested C/C++ code with only the dependencies it needs.

From equation to implementation

Mathematics shouldn't stop at the page. CodeCogs connects mathematical notation with executable code, so a numerical method becomes a C++ implementation, an interactive calculator and an embeddable tool — the same function, in every form you need it.

Equation → C++ → Calculate → Plot → Embed

AI can generate an implementation. CodeCogs gives you one you can inspect, execute and test before putting it into your project.

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Open by design

CodeCogs is free to explore, learn from, use and contribute to — every function, class and reference page is MIT licensed, with no restriction on commercial use.