In subjects like Maths, Physics and Chemistry, a lot of marks depend on remembering the right formula at the right moment. A formula sheet — a single page that gathers every important formula in one place — is one of the simplest and most powerful revision tools you can make. Instead of hunting through the whole textbook, you glance at one familiar page. Here is how to build one that genuinely saves you marks.
Keep it to one page per subject
The whole point is quick revision, so aim for one page per subject (or per big unit). If it grows too long, you are probably adding explanations you don’t need. A formula sheet is a reminder, not a textbook — short and focused is what makes it useful.
Write it in your own hand
Don’t just print one from the internet. The act of writing each formula yourself helps lock it into memory, and your own handwriting is easier for you to recall in the exam. Group the formulae chapter by chapter so your eye knows where to look.
Add the details that trip students up
A bare formula is not always enough. Next to each one, note the units, any condition for using it, and what each symbol means. For example, with the area of a circle, note that r is the radius; with a Physics formula, note the SI units. These small notes prevent silly mistakes.
Use small diagrams and tables
Some formulae make far more sense beside a small diagram — a labelled triangle for Trigonometry ratios, or a quick sketch for a Physics setup. Tables are perfect for things like areas and volumes of different shapes. A picture next to a formula makes both easier to remember.
Revise it a little every day
Keep your formula sheet somewhere handy and glance over it each morning or before you sleep. Even better, test yourself: cover a formula and try to write it from memory. This turns your sheet into daily active recall, which is far stronger than just reading it.
Keep updating it
Whenever you meet a new important formula or keep forgetting a particular one, add it to the sheet. By exam time, your formula sheet becomes a personalised map of exactly what you need to remember — perfect for last-minute revision.
Mistakes to avoid
- Making it so long and detailed that it becomes a second textbook.
- Only reading it, never testing yourself on the formulae.
- Leaving out units and conditions, then losing marks for small errors.
- Copying a printed sheet instead of writing your own.
- Making it once and never updating it as you learn more.
A note for parents
You can help by quizzing your child from their formula sheet for a few minutes — read out a topic and ask for the formula. It takes no subject knowledge from you, gives them quick active-recall practice, and shows them you are cheering them on.
Frequently asked questions
Which subjects need a formula sheet?
Mainly Maths, Physics and Chemistry, where formulae carry a lot of marks. You can also make a similar one-page sheet for key reactions, dates or definitions in other subjects.
When should I make my formula sheet?
Start it as you study each chapter and keep adding to it. That way it is ready and complete for quick revision in the final days before the exam, instead of being made in a rush.
Should I take my formula sheet to the exam?
No — you cannot carry notes into the exam. The sheet is a revision tool; the goal is to remember the formulae so well that you can rewrite them from memory when you need them.
Start your sheet today
Take one subject, open your notes, and gather its key formulae onto a single page in your own hand — with units and a small diagram or two. Then test yourself on it. That one page may become your most-used tool before the exam.