Try the Risk Reward Ratio Calculator Widget
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.
How to add it to your site
- Copy the code above Use the copy button so nothing is lost to line wrapping. It is a single iframe tag and it does not need anything else.
- Open the page you want it on In WordPress add a Custom HTML block, in Wix use the Embed HTML element, in Squarespace use a Code block, and on a hand-built site paste it straight into your HTML.
- Paste and publish The widget appears immediately. If you see an empty space instead, your editor has stripped the iframe tag, which the HTML embed guide explains how to work around.
- Adjust the look if you want to Add the parameters in the table below to the iframe URL to change the theme, the accent colour or the height. Nothing needs to be configured on our side.
Customisation options
| 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.
What the widget calculates
The widget computes the risk leg and the reward leg from the three price inputs, expresses the ratio in the conventional 1:X form, and derives the break-even win rate as one divided by one plus the ratio. It flags ratios below 1:1 rather than presenting them neutrally, since those require a win rate most strategies do not sustain.
Pairing it with the break-even win rate calculator and the expectancy calculator gives a reader the full picture of whether a strategy can work over a sample rather than on a single trade.
Who this widget suits
Strategy and setup articles
Readers can test your published setup against their own entry and exit levels.
Risk management lessons
The break-even win rate output makes the abstract argument concrete in one line.
Trading journal templates
A quick way to score a planned trade before it is taken.
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- Lot Size Calculator WidgetLot Size Calculator
The full library of free trading widgets has more than eighty tools, and the widget builder lets you preview and configure any of them before you copy the code.
Frequently asked questions
What is a good risk-reward ratio?
There is no universally correct figure, because a ratio only means something alongside a win rate. A 1:1 strategy with a 60% win rate is profitable before costs; a 1:3 strategy with a 20% win rate is not. The widget shows the break-even win rate for whatever ratio is entered, which is the honest way to answer the question.
The wider discussion is in this article on risk-reward ratios.
Does it account for spread and commission?
No, the ratio is calculated from the price levels entered. Costs push the real break-even win rate slightly higher than the theoretical one, which matters most on short-term strategies with tight stops. The trading cost calculator quantifies that separately.
Can readers use it for multiple take-profit levels?
This widget handles a single target. For scaling out across several targets, the scaling in and out calculator computes the weighted average exit and the blended outcome.
Is the break-even win rate before or after costs?
Before costs. It is the theoretical figure implied by the ratio alone. Treat it as a floor rather than a target, since spread and commission always raise the real requirement.
Does it work for shares and crypto as well as forex?
Yes. The calculation only uses the distance between price levels, so it is instrument agnostic. Only the units change.