How you fill and print the sheet
You fill the sheet yourself. The preview uses the same width as the printed page. Two columns is the default. Three columns place more formulas side by side. Letter and A4 are in the paper menu. Print in the browser, for as many pages as the formulas take.
What the groups contain
Groups follow the academic calculator hubs: Math, Geometry, Statistics, Physics, and Chemistry. Geometry splits into circle, triangle, and the other plane and solid figures. Math splits into algebra, linear algebra, and the rest. A check on the group name adds every formula in it. A check on one line adds only that line. Presets for Geometry, Algebra, Linear algebra, and Statistics add that whole group in one click.
How Wikipedia search differs from the catalog
The catalog box searches formulas already on this site. The Wikipedia box searches English Wikipedia and lists up to eight equations from the article you pick. You tick the ones to keep. The sheet cites the article. Paragraphs from the article are not copied here.
Worked example: circle area and Pythagoras
Under Geometry, open Circle and check Area of the disk. Open Triangle and check Pythogorean Theorem. Those two rows are the sample. They fit on one page in two columns. Area of the disk is A = πr². Pythogorean Theorem is c = √(a² + b²). The same sample, with pictures of this page, is in how to make a custom formula sheet.
Frequently asked questions
Do I need an account?
No. Nothing is saved on a server. The browser keeps the sheet on this device.
How many pages will it print?
As many as the formulas take. Nothing is left off because the sheet is long. Choose Print, and the browser dialog uses Letter or A4.
How is a Wikipedia equation different from a catalog formula?
Catalog rows come from the calculators on this site and can open the tool. A Wikipedia row is the equation taken from that article, with the article named on the sheet.
How do I save a PDF?
Choose Print, then Save as PDF in the browser dialog. Letter and A4 are both in the paper menu.
Can I use this when a teacher allows a formula sheet?
Only if their rule allows a printed sheet. This page does not know the exam. Wikipedia equations are that article’s math, not an exam-board list.
References
You fill the sheet yourself and print it in the browser, for as many pages as the formulas take. We do not generate a file. Wikipedia equations are the math from the article you opened, not an exam-board list. The selection stays on this device. A copied link includes catalog formulas only.