Trading and Investing Calculators: Position Size, Liquidation, Fees
Five free calculators that help you work out risk before a trade, not after. All of them run in your browser, no sign-up needed.
- Position size calculator — How much to buy with 1–2% risk and a set stop-loss.
- Liquidation calculator — How far the price has to move before the exchange closes your leveraged position.
- Risk/reward calculator — The ratio and the minimum win rate to break even.
- Fee calculator — How much goes to the exchange each month at your trading frequency.
- Compound interest calculator — The math of compounding with regular top-ups, at your own rate.
Why calculate before you trade
Most beginner losses come not from a “bad market” but from risk that wasn’t calculated in advance: the position is too big, the leverage too high, and fees eat into the result. These calculators answer those questions in a minute. Every calculation is based on your inputs, with no forecasts and no promises of returns.
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- Calculate risk before you trade.
- Calculators don’t predict the market.
- A stop-loss is mandatory.
FAQ
Are the calculators free?
Yes, all calculators are free and work right in your browser, no sign-up needed.
Can a calculator tell me how much I’ll earn?
No. The calculators work out risk, fees and the math based on your inputs. They don’t predict the market or promise returns.
Where should I start?
With the position size calculator — it answers the key question of every trade: how much to buy so that your loss at the stop is known in advance.
Free Aspiro Academy
26 lessons on investing and trading from scratch: videos, practice in the Aspiro apps, quizzes and a certificate. Lesson texts are open without sign-up.