The Risk-to-Reward Calculator: Why a Bigger Ratio Doesn't Mean a Better Trade

Your stop sits 20 pips below your entry. Your target sits 40 pips above it. You're risking 20 to make 40, which is a 1:2 risk-to-reward ratio. That's the whole calculation. If you can divide, you already know how to do it.

(Quick note in case you're brand new: a pip is the smallest standard price move in a currency pair. On most pairs it's the fourth decimal place, so 1.1700 to 1.1701 is one pip. Yen pairs use the second decimal. You don't have to memorise it, your platform measures it for you.)

The part nobody bothers to explain is what you're supposed to do with the number once you have it. And that gap is where the damage happens, because a lot of trading content treats a bigger ratio like it's proof of a better trade. It isn't. It's proof that you drew your target farther away.

What risk-to-reward actually measures

It measures two distances. Entry to stop, and entry to target. That's it.

Say you're long EUR/USD from 1.1700 with your stop at 1.1680 and your target at 1.1760. Stop distance is 20 pips, target distance is 60. Sixty divided by twenty is three, so you've got a 1:3.

Short trades work identically. Short from 1.1700, stop at 1.1720, target at 1.1660. Twenty pips of risk, 40 pips of reward, 1:2. Direction doesn't change anything, we're just measuring how far away each thing sits.

The units don't matter either, as long as you use the same ones on both sides. Pips, dollars, whatever. Twenty pips risked against 40 pips of target is the same relationship as $20 risked against $40.

What people mean when they say "2R"

You'll see traders write things like "took a 3R off EUR/USD this morning" and it sounds like code. It kind of is, but it's simple code.

R is just the amount you risked on that trade. One R. So if your planned loss was $25, then 1R is $25, a 2R winner is $50, a 3R winner is $75, and a full loss is -1R.

The reason everyone talks this way is that it strips out account size. A 2R win is a 2R win whether you're trading a $500 account or a $50,000 one. It tells you the quality of the result instead of the size of your account, and honestly it's a much more useful way to think about your own trading than staring at dollar amounts.

Risk-to-reward and R are the same idea wearing different clothes. A 1:3 setup produces a +3R if the target hits and a -1R if the stop does.

How to use the risk-to-reward calculator

Put in your entry, your stop and your target. It gives you the distances and the ratio.

Try the Risk-to-Reward Calculator

That's genuinely all there is to the mechanics. The rest of this post is about the number it hands back.

Why we care: you can lose more than you win and still make money

This is the bit that made me sit up when I first understood it properly.

Say you take 100 trades at 1:2 and you win 40 of them. Your 60 losses cost you 60R. Your 40 winners bring in 80R. You're up 20R, and you were wrong 60% of the time.

Now flip it. You win 70 trades out of 100, which sounds fantastic, but you keep snatching your winners off the table early so your average winner is only +0.3R while your losers run the full -1R. That's +21R against -30R. You won 70% of your trades and lost money.

So win rate on its own tells you almost nothing about whether someone is any good. Neither does risk-to-reward on its own. They only mean something together.

The break-even win rate

This is the most genuinely useful thing risk-to-reward gives you. For any ratio, there's a win rate you'd need just to come out flat, and it's simply 1 divided by (1 + your reward). Ignoring trading costs:

1:0.5 needs 66.7%

1:1 needs 50%

1:1.5 needs 40%

1:2 needs 33.3%

1:3 needs 25%

1:4 needs 20%

1:5 needs 16.7%

Read that as your floor. At 1:3, a quarter of your trades reaching target puts you at break-even, and everything above a quarter is profit.

Which is where a lot of people stop reading and go draw enormous targets on everything.

The number doesn't know whether price will get there

A 1:5 doesn't mean the trade is five times better. It means your target is five times farther from your entry than your stop is. Farther is farther. Nothing about the ratio makes price walk over and touch it.

Take that 16.7% break-even on a 1:5. If the setup only actually reaches its target 15% of the time, the maths is (0.15 × 5) − (0.85 × 1), which is 0.75 minus 0.85. Negative. Beautiful ratio, losing strategy.

Meanwhile a plain 1:1 that wins 65% of the time is (0.65 × 1) − (0.35 × 1), which is +0.30R per trade. Boring ratio, profitable strategy.

That calculation is expectancy, and it's what you're really after. Risk-to-reward is the payoff half of it. Win rate is the probability half. You need both halves or you're guessing with extra steps.

So no, there's no law that says every trade has to be 1:3 or better. Somebody said it in a video once and now it's everywhere.

Stop redesigning the trade to make the ratio prettier

Here's what I see people do, and it's the whole reason this post exists.

The chart gives you a stop 25 pips away, because that's where the setup is actually wrong. It gives you a target 35 pips away, because that's where the nearest thing worth aiming at sits. That's a 1:1.4. But you've decided you only take 1:3s, so you shove the target out to 75 pips.

Congratulations, the calculator now says 1:3. The chart still says absolutely not. You didn't improve anything, you typed a bigger number into a box.

The stop version is worse. You've got a logical 20-pip stop and a 40-pip target, so 1:2, and you want it to look like 1:4. So you drag the stop in to 10 pips for no reason except the arithmetic. Now your stop is sitting right in the middle of where price normally wobbles around before it does anything. Your ratio went up and your win rate fell off a cliff, and the two things cancel out at best.

The ratio is supposed to describe the trade. It doesn't get to design it.

The one legitimate way to improve it

Entry quality. This is the version that actually works.

Say the structural stop has to sit below a level, no negotiating. From where you first spotted it, that's 20 pips of stop and 40 pips to target, so 1:2. But you wait, and price pulls back closer to that level before turning, and now you're in with 10 pips of stop and 50 pips to the target. Same stop location, same target, 1:5.

Nothing got manufactured there. You just paid less to be in the same trade.

The catch is that sometimes price doesn't pull back. It leaves without you, and the 1:2 you would have taken goes and hits its target while you're still waiting for your prettier entry. Whether patience pays depends on how often that happens to you, and the only way to find out is to log it. Which, yes, means keeping a journal.

Your planned ratio and your actual ratio are two different numbers

This is the one I'd tattoo on people if they'd let me.

You plan a 1:3. Then you take half off at +1R because you're nervous, a quarter at +2R, and let the last quarter run to +3R. Add that up: 0.5 plus 0.5 plus 0.75. Your "1:3 trade" produced 1.75R.

That's not an argument against partials. Take them if that's your plan. It's an argument for knowing what your account actually received instead of what your chart theoretically offered.

Same thing with moving to break-even at +1R. Some trades that would have gone to +3R now close at zero, and some trades that would have been -1R now close at zero too. Whether that trade is worth making depends entirely on which happens more often in your trading, and you cannot know that from feel.

So after a stack of trades, go and calculate your average winner and your average loser in R. If your plan says 1:3 and your journal says your average winner is 1.1R against an average loser of 0.9R, your real relationship is about 1.2:1. That's the number that goes into your expectancy, not the pretty one.

And if there's a big gap between planned and realised, that's worth sitting with. Sometimes it's your management rules doing exactly what they're supposed to. Sometimes it's you cutting winners because watching green turn red feels bad. Those are very different problems and only one of them is a strategy problem.

Spread and slippage eat small ratios alive

If your stop is 5 pips and your target is 10, that reads as 1:2. Now add a spread and commission that cost you about a pip. Real risk 6, real reward 9. You're at 1:1.5 and you didn't do anything wrong.

The smaller your distances, the more of your ratio the costs take. Scalping isn't bad, it just needs a much higher win rate than the theoretical table suggests, and most people running tiny targets have never actually subtracted their costs.

Slippage does the same thing from the other end. You planned a 20-pip stop, news hit, you got filled 25 pips away. Your planned risk was 1R and your actual loss was 1.25R. Log both. The plan and the outcome are separate pieces of information and you want them both.

Where this sits in your process

The order matters, and it's the opposite of what most people do.

Find your entry.

Find where the trade is wrong, that's your stop.

Find where you're actually aiming, that's your target.

Run the risk-to-reward.

Decide whether that meets your rules.

Then work out your dollar risk and your position size.

Notice what's not on that list: shuffling the levels around until the calculator says 1:3.

Risk-to-reward is a filter you apply before you enter. Once you're in, the original number stops being live, because your remaining reward and your current risk have both changed. Leave the original stats alone in your journal and let them be what they were.

 A last thing about judging trades

A trade that had 1:4 and lost isn't automatically a bad trade. If it followed your rules, a loss is just one of the outcomes your rules produce.

And a trade you took on absolutely nothing, with a 10-pip stop and a 50-pip target that happened to run, isn't a good trade. It's a good result. Those are not the same and pretending otherwise is how people talk themselves into repeating something that only worked once.

The ratio can't rescue a setup you had no business taking, and it can't ruin a good one.

So that's the calculator. It answers one question, which is how much am I risking against what I could make, and it answers it honestly. The next question, how often does this setup actually deliver that, isn't in the number, and it's the one that decides whether you make money. You can draw a 1:27 on anything. The market is under no obligation to give a shit.

Go pull up a chart, mark a setup you'd genuinely take, put in the stop where the idea would be wrong and the target where you'd actually aim, and run it through the calculator. Whatever number comes back, that's the honest one. Then do it another twenty times and see what your ratios naturally look like when you're not forcing them. That's your real number, and it's more useful than anyone else's rule.

Educational purposes only. Forex trading involves substantial risk. Risk-to-reward calculations compare planned loss and reward distances and do not represent the probability of either outcome. Actual results may differ because of execution, slippage, spread, commissions, trade management, and changing market conditions.