CodeCogs® | fxRender

Your spreadsheet knows the equation. Now you can see it.

fxRender reads the formula behind any cell and draws it on the sheet as a typeset equation — using the cell references, the names of the cells, or the values in them.

Get it for Excel See what it does

Every equation is typeset inside Excel, on your own machine. No formula, value or cell name is sent anywhere — and there is no round trip per equation.

$$s=\frac{\color{Blue}B_1\color{Black}\cdot\color{Blue}B_2}{\sqrt{\color{Blue}B_1\color{Black}^2+\color{Blue}B_2\color{Black}^2}}+\sqrt{\frac{\color{Blue}B_3}{\color{Black}5}}$$
Ref — the cells it uses

Rendered with

$$s=\frac{\color{Blue}s_\sigma\color{Black}\cdot\color{Blue}s_\tau}{\sqrt{\color{Blue}s_\sigma\color{Black}^2+\color{Blue}s_\tau\color{Black}^2}}+\sqrt{\frac{\color{Blue}s_\gamma}{\color{Black}5}}$$
Name — what those cells are called

Rendered with

$$s=\frac{1.2\cdot1.3}{\sqrt{1.2^2+1.3^2}}+\sqrt{\frac{1.45}{5}}$$
Value — the numbers themselves

Rendered with

$$s=\frac{\color{Blue}s_\sigma\color{Black}\cdot\color{Blue}s_\tau}{\sqrt{\color{Blue}s_\sigma\color{Black}^2+\color{Blue}s_\tau\color{Black}^2}}+\sqrt{\frac{\color{Blue}s_\gamma}{\color{Black}5}}$$

Rendered with

$$T=\prod_{i=X}^{Z}\color{Blue}a_i\color{Black}+\max_{i=X}^{Z}\left(\color{Blue}a_i,b_i,c_i\color{Black}\right)-\sum_{i=X}^{Z}\left(\color{Blue}a_i\color{Black}+\color{Blue}b_i\color{Black}\right)$$

Rendered with

$$\color{Blue}F_n\color{Black}=\frac{\color{Blue}F_k}{\color{Blue}z\color{Black}\cdot\color{Blue}f_2\color{Black}\cdot\pi\cdot\color{Blue}H_1}\color{Green}\left[\frac{N}{mm^2}\right]$$

Rendered with

$$\color{Blue}v\color{Black}=\frac{1}{3}\pi\color{Blue}r\color{Black}^2\color{Blue}h\color{Green}\left[m^3\right]$$

PNGSVGMathMLLaTeXC/C++

Rendered with

Names, not coordinates

=(B1*B2)/SQRT(B1^2+B2^2)+SQRT(B3/5) tells you nothing about what is being calculated. The same formula drawn with the names of its cells does.

fxRender takes those names from the cell beside each value, or from a named range, and understands LaTeX in them — so s_\sigma in a cell becomes a real subscripted sigma in the equation.

It reads your table

Point it at a formula covering a block of cells and it recognises the column and row headings around them, then writes the calculation in the notation a mathematician would use — a product, a sum, a maximum over a range.

This is what makes a dense SUMPRODUCT across a table legible: you see the shape of the calculation rather than a string of coordinates.

Units carried through

Put the units beside the numbers and fxRender will carry them through the calculation, cancel what cancels, and show you what the answer is actually in. Newtons over millimetres squared, not "0.0816".

It is the quickest dimensional check there is: if the units come out wrong, the formula is wrong.

Then take it with you

Every equation can leave the sheet. Copy it as a picture for a report or an email, save it as a vector, or copy it as MathML — which Word turns into one of its own equations, editable and sharp at any size. Or take the LaTeX straight into a paper. All four are one press away.

And it does not have to stay an equation. The same calculation can be exported as real C/C++ through CodeCogs, compiled to WebAssembly, and embedded in your own page as a live calculator — the actual code running, not a picture of it. Readers change a value and the answer moves.

Which is the honest end of the story: the spreadsheet becomes a document, the document becomes something people can use.

It works where your spreadsheet already is

A panel beside your sheet in Excel — on Windows, on a Mac, and in the browser. Nothing is uploaded and nothing is rendered on someone else's server: the typesetting happens where your spreadsheet does.

Get it for Excel Read the documentation