Turns a cash risk amount and a stop distance into the lot size your reader should actually type into the order ticket.
Lot size is the last step between a risk rule and an order, and it is where good intentions usually break down. A trader decides to risk 1% of a R20,000 account, works out that this is R200, sets a stop forty pips away, and then guesses at the lot size because the arithmetic in between involves pip value and a currency conversion. The guess is what makes the actual loss come out at R500 instead of R200. This widget removes the guess.
Your reader enters the account balance, the risk they are willing to take, the stop distance and the pair. The widget returns the lot size that produces exactly that risk, expressed in standard, mini and micro lots so it can be typed straight into any platform.
It is a natural companion to a position size calculator rather than a duplicate of one. Position size answers how much exposure to take, and lot size expresses that answer in the units a forex platform actually accepts. On a forex-specific page, lot size is usually the one readers want.
The widget assumes nothing about the account currency, handles the rand crosses correctly, and shows every step of the conversion in the breakdown so a reader can check the number rather than trusting it.
Free for any site, including commercial ones. Keep the small credit line at the bottom of the widget so readers can find the full version. Nothing is stored about the people who use it. See the disclaimer.
| Parameter | Values | What it does |
|---|---|---|
theme | auto, light, dark | Default follows the reader's own system setting, so the widget looks right on a dark site and a light one without you choosing. |
accent | Six hex digits, e.g. accent=1A56DB | Recolours the header bar and the primary button to match your brand. |
header | 1 or 0 | Set to 0 to hide the title bar when your page already has a heading above the widget. |
breakdown | 1 or 0 | Set to 0 to hide the calculation breakdown for a more compact block. |
corners | 1 or 0 | Set to 0 for square corners if your design has no rounding anywhere else. |
width | full | Removes the 520px maximum so the widget stretches to its container. |
Parameters are added to the iframe URL as a normal query string, for example
/embed/position-size-calculator.html?theme=dark&accent=1A56DB&header=0. The
widget builder lets you set all of them visually and hands you the finished code.
The widget divides the cash amount at risk by the per-pip value of the pair multiplied by the stop distance in pips, then expresses the result across the three lot conventions. It shows the resulting cash risk back to the reader as a check, which catches input errors immediately.
The breakdown walks through pip value, stop distance and the division, which is the sequence most traders never see written out. Readers who work through it once generally stop guessing afterwards.
The single most practical tool you can put in front of someone learning risk management.
A lot size figure is what the order ticket asks for, so the widget maps directly to the next thing the reader does.
Traders working to a strict daily loss limit need exact sizing, not an approximation.
The full library of free trading widgets has more than seventy tools, and the widget builder lets you preview and configure any of them before you copy the code.
Position size is the exposure, usually expressed in units of the base currency. Lot size is the same exposure expressed in the standard forex convention, where one standard lot is 100,000 units, a mini lot is 10,000 and a micro lot is 1,000. The widget shows all three so the reader can use whichever their platform expects.
If your page is about risk in general, the position size widget is the better fit. If it is specifically about placing a forex order, this one is.
Yes, all three conventions are shown at once. Micro lots matter for small accounts, which is most beginner accounts in South Africa, and a calculator that only outputs standard lots is useless to that reader.
It is built around forex lot conventions. Index and commodity CFDs use contract sizes that vary by broker, so for those the position size widget is the better tool because it works in units rather than lots.
Lot size and margin are different things. The lot size sets the exposure, and the margin depends on the leverage the broker applies to that exposure. The margin widget covers that side.
Yes. Nothing in the calculation is South Africa specific beyond the account currency options, which include the rand alongside the usual currencies. Traders anywhere sizing a forex position use identical arithmetic.
Widgets show the maths. A demo account shows how the same maths behaves against live spreads and real market movement, without risking funds.
Open a free demo account79% of retail CFD accounts lose money. Demo accounts do not guarantee future profits.