The plural of formula is formulae or formulas. Formulae contain equals signs, as do equations, so it can sometimes be difficult to tell the difference between an equation and a formula.

The plural of formula is formulae. A formula is a mathematical rule or relationship that uses letters to represent amounts which can be changed – these are called variables. For example ...

Here's the full timetable and schedule for the Season 11, 2025 Mexico City E-Prix. Formula E is back after a classic ...