How to Learn the Financial Ratios
Financial ratios turn raw numbers into insight — how profitable, how efficient, how risky a business is. Analysts, students and investors use a core set constantly. This deck teaches what each key ratio measures and how it is calculated.
There are 10 cards in the deck below. You can read through them, practise them right here with the flip-card player, and then save the deck to study properly with spaced repetition — the method that makes them stick for months, not minutes.
Why the key financial ratios is hard to memorize (and the fix)
The ratios sound alike (ROI vs ROE) and the formulas are easy to mix up. Learning what each one actually tells you keeps them straight.
The fix is active recall plus spaced repetition. Instead of re-reading the list (which feels productive but barely works), you test yourself — pull each answer out of memory — and you review each card on a schedule that stretches over time. Every time you successfully recall a fact, the memory gets stronger and the next review is pushed further out. That's how you go from "I saw it once" to "I just know it."
The fastest way to learn the key financial ratios
- Break it into small batches. Learn the profitability ratios first (margins, ROI), then the valuation ratios (P/E), then the liquidity ratios (current ratio).
- Test, don't re-read. Look at the question, say the answer out loud before flipping the card. The little struggle to recall is what builds the memory — a smooth re-read does almost nothing.
- Review on a schedule. Spaced repetition shows you each card right before you'd forget it. Get one right and it comes back in a few days, then a week, then a month. Miss one and it comes back sooner.
- Keep sessions short and daily. Five to ten minutes a day beats a two-hour cram every time. Consistency is the whole game.
One fact per card. A ratio is only meaningful in context — compare it to past years or to competitors.
The full deck: the Financial Ratios
Here's every card in the set. Practise them above, or save the deck and let spaced repetition schedule your reviews automatically.
| Ratio | What it measures |
|---|---|
| What does the P/E ratio measure? | Share price divided by earnings per share — how expensive a stock is |
| What is ROI? | Return on Investment: net gain divided by cost |
| What does gross margin measure? | Gross profit as a percentage of revenue |
| What does net profit margin measure? | Net profit as a percentage of revenue |
| What does the current ratio measure? | Current assets ÷ current liabilities (short-term liquidity) |
| What is ROE? | Return on Equity: net income ÷ shareholder equity |
| What is EPS? | Earnings Per Share: net income ÷ number of shares |
| What does the debt-to-equity ratio measure? | How much debt a company uses relative to equity |
| A high P/E ratio suggests what? | Investors expect high future growth (or the stock is expensive) |
| What does a current ratio below 1 suggest? | The company may struggle to cover short-term debts |
Save this deck and actually remember it
Create a free account, keep this 10-card deck, and we'll schedule every review at the perfect moment. First deck free forever — no credit card.
Study this deck free →FAQ: learning the key financial ratios
How long does it take to learn the key financial ratios?
Most people can lock in the key financial ratios within one to three weeks of short daily sessions. With spaced repetition doing 10–10 cards a day, you'll recognise them within days and recall them reliably within a couple of weeks.
What's the best way to memorize the key financial ratios?
Active recall plus spaced repetition. Test yourself instead of re-reading, and review on a schedule that spaces the cards out over time. Flashcards are built for exactly this — which is why the deck above is the fastest path.
Is this deck free?
Yes. You can practise all 10 cards on this page for free with no account. Sign up (also free) to save the deck and let spaced repetition schedule your reviews so it sticks long-term.