Forex Profit Calculator: Project Your Trade Outcomes

A forex profit calculator answers a question most traders ask too late: what is this trade actually worth if it works? Enter the pair, the lot size, the entry and the exit, and you get a figure in your account currency. That is useful as far as it goes. What is more useful, and what almost every version of the tool skips, is projecting the result at each take profit level you actually plan to use, and expressing each one as a multiple of what you are risking.

This article covers the arithmetic behind the number, where the standard tool stops short, and how to project a trade with three targets so you can decide whether it is worth taking before you take it.

What a forex profit calculator actually does

Profit in forex is the difference between your entry price and your exit price, multiplied by the size you traded. Myfxbook, which holds most of the search traffic for this term, describes its own tool in exactly those words: it takes the difference of entry and exit prices and multiplies it by the pip value of your trade, where pip value depends on the currency pair, the lot size and your account currency. That is the correct method and there is nothing clever hidden in it.

Their calculator asks for six inputs: currency pair, account currency, trade size in lots, open price, close price and direction. Direction matters because a sell profits when the exit is below the entry. The tool covers metals and a long list of crypto pairs alongside the majors, the account currency list runs to the eight currencies most retail accounts are denominated in, and their own gold example is refreshingly plain: buy one standard lot of gold at 1,890.00, sell at 1,891.00, and you make 100 dollars. It is free, fast and correct. The gap is not accuracy, it is scope.

The maths behind the number

For a long position, profit equals the exit price minus the entry price, multiplied by the contract size, multiplied by the number of lots. Reverse the bracket for a short. Everything after that is bookkeeping and currency conversion.

Most people find it easier to work in pips, because that is how stops and targets get spoken about. Profit equals pips gained multiplied by pip value. For a standard lot of 100,000 units on a pair quoted to four decimal places, a pip is 0.0001, so a pip is worth 100,000 times 0.0001, which is 10 units of the quote currency. On EUR/USD that is 10 US dollars per pip per standard lot, one dollar for a mini lot and ten cents for a micro.

Yen pairs and the account currency

Pairs quoted against the yen use two decimal places, so a pip is 0.01 and a standard lot is 1,000 yen per pip rather than 10 dollars. That is a yen figure, and an account held in dollars or sterling has to convert it at the prevailing rate. The same conversion applies any time the quote currency is not your account currency. This is the single most common reason two profit calculators disagree, and our forex pip calculator guide works through pip value pair by pair, including the cases that catch people out.

Why a single close price is not enough

Here is where the standard tool stops short. It takes one close price. Most traders do not exit at one price. They set two or three take profit levels, take part of the position off at the first, move the stop, and let the remainder run. A single-exit calculator cannot show you what that plan is worth, which means it cannot help you choose between plans.

It also returns the answer in cash, which feels informative and is the wrong unit for comparing trades. Two hundred pounds on one trade and two hundred pounds on another tell you nothing until you know what each one risked. The unit that travels between trades is R, the multiple of the amount you put at risk. A trade that risks 100 and targets 300 is a 3R trade whether the account behind it holds 5,000 or 500,000, and R is the only way to compare a gold setup against a yen setup honestly.

A worked example: three targets on one position

Take a 10,000 account risking one per cent, so 100 on the trade. EUR/USD, long from 1.0850 with the stop at 1.0825. That is a 25 pip stop, so you need four dollars per pip to lose exactly 100 if you are wrong, which is 0.40 lots. If that step is unfamiliar, our forex lot size calculator guide covers it. The prices here are illustrative, not live quotes.

Put the targets at 1.0875, 1.0900 and 1.0925, which are 25, 50 and 75 pips away. Projected on the full 0.40 lots, the first target pays 25 times four, so 100, which is 1R. The second pays 50 times four, so 200, which is 2R. The third pays 75 times four, so 300, which is 3R.

Reading it in R is what makes the trade decidable. If your rule is that you will not take a setup unless the first target clears 1R and the structure supports the second, this trade qualifies and you know it in ten seconds. If the nearest sensible target had sat 15 pips away, you would have been looking at 0.6R for a full unit of risk, and the honest answer would have been to leave it alone.

Scaling out changes the number

Now split the exit: close 0.20 lots at the first target, 0.10 at the second and 0.10 at the third. That is 0.20 lots for 25 pips, which is 50, plus 0.10 lots for 50 pips, another 50, plus 0.10 lots for 75 pips, which is 75. Total 175, or 1.75R.

Running the whole 0.40 lots to the third target would have paid 300, or 3R. Scaling out cost 1.25R in the case where everything went right. What it bought was the other case: price tags the first target, turns, and comes back. With the stop moved to entry you keep 50, a half R gain, rather than handing back the full 100. Neither approach is correct in the abstract, and anyone who tells you otherwise is selling something. What matters is that you can see both numbers before you enter, instead of discovering after the fact that your exit plan halved a good trade.

Gold, where contract size decides everything

Gold is where profit calculators most often disagree with each other, and the cause is contract size rather than arithmetic. XAU/USD is commonly quoted with a standard lot of 100 troy ounces, but that is a broker convention rather than a universal rule. Pip definitions vary as well: some platforms treat a one cent move as a pip, others a ten cent move, and plenty of traders say points and mean whole dollars. Feed the same trade into two tools that assume different conventions and you get two different answers, both internally consistent.

Sidestep the argument by working in dollars of price movement. On a 100 ounce contract, a one dollar move in gold is 100 dollars per standard lot, ten dollars per mini and one dollar per micro. Myfxbook's own gold example agrees with that reading, and so will your platform once you open the contract specification and check the contract size.

Worked through: buy gold at 3,350 with the stop at 3,335, which is 15 dollars of risk per ounce. To risk 100 you could hold 6.67 ounces, and since lot sizes step in hundredths you round down to 0.06 lots, which is six ounces and risks 90. A target at 3,380 is 30 dollars per ounce, so six ounces pays 180. That is exactly 2R, and the R multiple survives the rounding because both sides of the ratio scaled together. Watch what rounding does to the cash figure and not to the ratio: this is why R is the more stable number to plan with.

The costs a profit calculator does not charge you for

A profit calculator projects the gross move. Your account receives the net one, and two costs sit in between.

The spread is charged the moment you enter. On the 0.40 lot EUR/USD trade above, a 0.8 pip spread costs 0.8 times four dollars, so 3.20. Commission, where your broker charges it separately, might be 3.50 per side per standard lot, which is seven dollars per lot on a round turn, so 2.80 on 0.40 lots. Both figures are illustrative and vary widely between brokers and account types, so use your own.

Six dollars against 100 of risk is six per cent of your risk unit, gone before the trade has done anything. Across a hundred trades that is six R of drag. If your edge is 0.2R per trade, which would be a respectable edge, a hundred trades earns twenty R gross and costs have taken close to a third of it. That is not an argument against trading. It is an argument for putting costs into the projection, and for treating a 1R target as slightly less than 1R in practice. Positions held overnight also pay or receive a swap, which is a separate line again and worth checking on anything you intend to hold for days.

Turning a projection into a decision

The whole point of projecting a trade is to give yourself a reason to say no. That means the projection has to happen before the entry, every time, which is the step people skip when a setup looks good and the candle is closing. The Risk Doctor in Systemly does it in one pass: give it your account size, your risk percentage, the symbol, the entry and the stop, and it returns the exact lot size, the cash at risk, the projected outcome at each take profit level, the breakeven price and the R multiple for each target. It is free on every tier. The arithmetic is not hard, as this article has hopefully shown. Doing it reliably under time pressure is the hard part. If you want the method rather than the tool, our forex position size calculator guide sets out the full sequence.

A minimum risk-reward requirement then becomes one line on a setup checklist rather than a mood. Systemly signals carry the same numbers, along with the reasoning behind the levels and, for community signals, the outcome that was eventually recorded, so you can see how the projection compared with what happened rather than taking anyone's word for it. Those levels are computed from raw candle data rather than estimated from a picture of a chart, which is why the distances are exact. Where the requirement sits in the rest of your process is covered in our guide to building a confluence checklist.

Frequently asked questions

How do you calculate forex profit?

Take the exit price minus the entry price for a long, or the entry minus the exit for a short, then multiply by the contract size and the number of lots. In pips it is simpler: pips gained multiplied by pip value, where pip value for a standard lot is 10 units of the quote currency on a four decimal pair and 1,000 yen on a yen pair. If the quote currency is not your account currency, convert at the current rate.

How do take profit levels affect your profit and loss?

Every target you add splits the position, so each portion earns only its own share of the move. In the example above, exiting 0.40 lots in three pieces at 25, 50 and 75 pips returned 1.75R, while holding the whole position to the furthest target would have returned 3R. The trade-off is protection: scaling out banks a gain if price reverses after the first target, where holding on can turn a winner into a scratch or a loss. Project both before you enter and pick deliberately.

Is a forex profit calculator accurate?

The arithmetic is exact. The inputs are where accuracy is lost. A calculator that assumes a different contract size for gold than your broker uses will be wrong by a wide margin, currency conversion moves with the market, and no standard calculator deducts spread, commission or overnight swap. Treat the output as a clean projection of the price move and then subtract your own costs from it.

Project your next trade before you take it

Work out the lot size, the cash at risk, the result at each target and the R multiple in one go with the free Risk Doctor calculator. No card, and it is available on every tier.

Systemly.ai is not a licensed financial adviser and does not provide regulated financial advice. Trading carries a significant risk of loss and is not suitable for everyone. Past performance does not guarantee future results. Always do your own research and never risk more than you can afford to lose.