About the Crypto Position Size Calculator
Position sizing answers one question before a trade: how much can I buy so that, if the stop-loss is hit, I lose only the amount I decided in advance? Enter your account size, the percentage you accept to risk, your entry price and your stop-loss price. The calculator returns the size of the position in coins, its value, the leverage that size needs and the distance to the stop. Add a take-profit and it also shows the reward and the reward-to-risk ratio. You can include a trading fee for each side, since fees add to the loss. It works for long and short trades and for any asset. It does not connect to an exchange and does not place orders, and it is not financial advice.
Updated October 2026
How to use the Crypto Position Size Calculator
- 1Enter your account size and the percent of it you accept to lose on this trade.
- 2Enter the entry price and a stop-loss price. A stop below the entry means a long trade.
- 3Optionally enter a take-profit price and the trading fee per side.
- 4Read the position size in coins, its value, and the leverage needed.
- 5Check the reward-to-risk ratio before you decide to trade.
Why size comes before entry
Most people decide what to buy first and how much second. Professionals reverse it: they decide where the idea is wrong, which is the stop-loss, and then pick a size so that being wrong costs a small, planned share of the account. A stop that is far away means a smaller position, and a tight stop means a bigger one, for the same risk.
This also stops the account from being hurt by a few bad trades. With a 1 percent risk, even ten losses in a row cost about 10 percent of the account, which is painful but recoverable. At 10 percent risk per trade the same streak would wipe out most of it.
Checklist before you trade
- Put the stop where your idea fails, not where the loss feels comfortable.
- Check that the reward-to-risk is at least 2 to 1 for your plan, so you do not need to win most trades.
- Account for fees and the spread, which the fee box covers for both sides.
- Do not move the stop further away after the trade starts.
Companion tools
Use the Percentage Calculator to turn a price move into a percent, and the ROI Calculator to check a finished trade. For the long game, the Crypto Rebalancing Calculator manages the whole portfolio, and the Stock Profit Calculator works out profit after fees. The Crypto Staking Rewards Calculator covers coins you hold instead of trade.
Features
- Position size from risk percent and stop distance
- Long and short trades are detected from the stop
- Money at risk and position value
- Leverage needed and distance to the stop
- Reward and reward-to-risk with a take-profit
- Trading fees on both sides included
- Works offline in your browser
Frequently asked questions
How is the position size calculated?
Position size = money at risk / distance between entry and stop. If your account is 10,000, you risk 1 percent (100) and the stop is 1,000 below a 50,000 entry, the size is 100 / 1,000 = 0.1 coin.
How much should I risk per trade?
Many traders use 0.5 to 2 percent of the account. Smaller is safer and survives a losing streak. The right number is your choice, and this tool does not advise one.
What is the reward-to-risk ratio?
It is the profit you would make at the take-profit divided by the loss at the stop. A ratio of 3 to 1 means the possible gain is three times the possible loss. It does not tell you how likely the target is.
Why does it need leverage?
If the position value is bigger than your account, the exchange must lend you the rest, which is leverage. High leverage raises the chance of liquidation, where the exchange closes your trade.
Does the stop-loss guarantee my loss?
No. In a fast market a stop can fill at a worse price (slippage), or the price can gap past it. Treat the risk amount as a plan, not a guarantee.
Can I use it for stocks or forex?
Yes, for the simple price-based sizing. For forex lots or futures contracts, convert the result to the contract size of your market.
Is this financial advice?
No. It is a risk calculator. Trading and leverage can lose all of your money.