Position size calculator
The lot size at which a stop-out costs the amount you chose.
Free risk tools
Stop loss calculator
You know the lot size. This says where the stop has to go so a stop-out costs no more than the risk you chose, and what a smaller size would give you.
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The trade
Where the stop goes
An example with typical numbers. Change any box to use your own.
For a buy at 4,000.00 with 0.1 lots, put the stop at 3,990.00: 100.0 pips away. A stop-out there loses about $100.00, inside your $100.00 (1%).
- The rule behind it
- The farther the stop, the more each lot loses, so a fixed size fixes the stop. It is rounded towards the entry so the loss never comes out above the budget.
The stop for other sizes at the same risk: a smaller size buys a wider stop.
| Lots | Stop | Pips away |
|---|---|---|
| 0.01 | 3,900.00 | 1,000.0 |
| 0.02 | 3,950.00 | 500.0 |
| 0.05 | 3,980.00 | 200.0 |
| 0.10 | 3,990.00 | 100.0 |
| 0.20 | 3,995.00 | 50.0 |
| 0.50 | 3,998.00 | 20.0 |
| 1.00 | 3,999.00 | 10.0 |
If the chart says the stop belongs somewhere else, keep the stop and change the size: size the trade from this stop. Will ordinary movement reach it? Check the stop noise.
Spread and slippage are not included, and a gap can jump past a stop. Contract sizes are the common MetaTrader ones.
Education only, not investment advice. The answer comes from the numbers you typed in, not from your account or the market. Simulated results are hypothetical and have limits: real trading has slippage, gaps, changing results and emotions. Trading leveraged products can lose money quickly, including all of it. Risk warning
Educational only, not financial advice; trading involves risk.
The size decides the stop, or the stop decides the size
With a fixed risk, the lot size and the stop distance are tied: double one and the other halves. Most traders do best choosing the stop from the chart, where the idea is proved wrong, and letting the size follow. This page is for the other case, a size you are tied to, and it shows honestly whether that size leaves the stop room to breathe.
- The usual way round, the size from the stop: the position size calculator.
- Whether ordinary movement is likely to reach a stop that close: the stop noise check.
Not advice. The answer is arithmetic on the numbers you type, not a view on any market.
Next tools
Stop noise check
How often normal wiggle alone reaches your stop.
Lot size table
The lot size for every stop and risk, on one printable page.
Pricing
Three ways in. Pick yours.
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Baroq never holds your money and never trades for you. Educational only, not financial advice; trading involves risk.