What is the ATR indicator? Most pages answer in a sentence: ATR is a volatility indicator. I suppose that is an answer too. But for me the ATR forex traders put on their charts is a ruler. It measures how many pips a market moves in an average day — and nothing else.
On 6 November 2026 the 14-day ATR on EUR/USD was 66 pips. That one number sets my stop, my position size and my target for the next trade. It does not tell me which way to trade.
Is that too little for an indicator? I do not think so. A ruler that measures one thing well is not just useful, it is the part of the trade I can actually control.
The short version first, the details after.
| What you need | ATR rule | EUR/USD, 6 Nov 2026 |
|---|---|---|
| Stop loss | 1.5 to 2 × ATR(14) | 99 to 132 pips |
| Position size | Risk in dollars ÷ stop in dollars | 0.10 lot on a $10,000 account |
| Target for one day | 1 × ATR | 66 pips |
| Today’s range check | True range ÷ ATR | 104 ÷ 66 = 1.6, a big day |
True range before ATR
The true range indicator came first, in 1978, in Welles Wilder’s book New Concepts in Technical Trading Systems. Wilder wanted one number for the day’s movement that did not break on gaps. A plain high-minus-low misses the gap. So he took three distances and kept the biggest.
The first distance — today’s high minus today’s low. The second — today’s high minus yesterday’s close. The third — yesterday’s close minus today’s low. On 6 November 2026 EUR/USD opened at 1.1219, printed a high of 1.1235, a low of 1.1131 and closed at 1.1142. The three distances are 104, 16 and 88 pips. The true range is 104.
Why does the gap matter in forex at all? The market is closed from Friday night to Sunday night. If Monday opens 40 pips below Friday’s close and then stays flat, high minus low shows a quiet day. The true range shows the 40 pips you would have lost on a Friday position. This is why the word true is in the name.
The ATR formula, step by step
How to calculate ATR? Take the true range of the last 14 days and average them. That is the ATR formula, and for most readers it is enough. The average true range forex platforms draw is that number, and the ATR calculation gets one detail more complicated only when you ask which average.
Wilder did not use a plain average. His method takes yesterday’s ATR, multiplies it by 13, adds today’s true range and divides by 14. The new day gets a weight of one fourteenth, and old days fade slowly. TradingView and most books follow Wilder. MetaTrader does not — the standard ATR in MT4 and MT5 is a simple moving average of the true range, and the MetaTrader documentation says exactly that.
Does it change the number? A little. On 6 November 2026 I calculate ATR for EUR/USD both ways from the same 14 daily bars. Wilder’s smoothing gives 66 pips. The simple average gives 63 pips.
Most articles tell you the two are interchangeable. On my robots they are not — a stop of 2 × ATR differs by 6 pips between the two, and over hundreds of trades the backtest results are not the same. Pick one method and keep it.
One more thing about the chart. The Fed held on 28 October, the ECB held on 29 October, and the Bank of England raised Bank Rate to 4% on 5 November. Those three days gave true ranges of 56, 81 and 64 pips — ordinary days by this ruler.
Where was the big day, then? The biggest day of the period was 1 October with 121 pips, and the second was Friday 6 November with 104. Neither was a central bank day. I do not know what the ATR will be after the next Fed meeting, and the calendar does not know either.
ATR indicator settings
The only setting is the period, and 14 is the default everywhere since Wilder. People ask me whether 20 or 10 is better. For me the period matters less than the timeframe. ATR on the H1 chart measures an average hour. ATR on the D1 chart measures an average day. A stop built from the H1 value on a swing trade that lasts four days is simply the wrong ruler.
I keep 14 on every chart. Not because 14 is magic — because every backtest I have ever run used 14, and changing the period would make old and new results impossible to compare. A shorter period reacts faster and jumps more. A longer one is smoother and slower to notice that the market has changed. Both are fine — if you know which one you are looking at.
How to use ATR indicator in forex
How to use ATR indicator in forex comes down to three decisions, and all three are about distance. The first decision — where the stop goes. The second — how many lots. The third — how far to expect the price to travel. I will take the EUR/USD number from 6 November, 66 pips, through all three.
The stop. I put it at 1.5 times the ATR for a trade I expect to hold two or three days, so 99 pips, and I round it to 100. Below 1 ATR the stop sits inside ordinary daily noise — it gets hit by nothing in particular. Above 2 ATR the stop is so wide that the position size becomes tiny. The ATR multiplier between 1.5 and 2 is where most of my robots live.
The size. Risk 1% of a $10,000 account — that is $100. One pip on one standard lot of EUR/USD is $10, so a 100-pip stop costs $1,000 per lot. $100 divided by $1,000 gives 0.10 lot.
On a $100 cent account the same rule gives $1 of risk and 0.10 cent lot — the same lot number, only in cents. This is the step most people skip — and it is the step that makes the ATR not just a line on the chart, but a number in the order ticket.
The target. One ATR is an average day. A 200-pip target on a day trade in EUR/USD right now asks the market to do three average days in one session. It can happen. On 1 October it almost did. But a plan that needs the market to be unusual is not a plan, so my day targets stay at 1 ATR and my swing targets at 2 to 3.
Does an ATR indicator strategy exist on its own? Not for me. ATR range trading — selling at the top of the expected daily range and buying at the bottom — assumes the day starts in the middle, and it rarely does. The entry comes from somewhere else — a trend filter, a breakout, a candle. ATR is the ruler inside that strategy, not the strategy.
Five mistakes with the ATR
I see the same ATR forex errors in the e-mails that come to the shop, and I made most of them myself before I started writing robots. Here they are — with what each one costs.
| Mistake | What happens | Fix |
|---|---|---|
| Fixed 100-pip stop on every pair, every month | On GBP/USD it was 0.8 ATR in March 2026 and 1.9 ATR in September | Stop = multiplier × ATR, recomputed at every entry |
| H1 ATR for a D1 trade | Stop is five times too tight | ATR from the timeframe you trade |
| Reading ATR as direction | ATR rose on 1 October while EUR/USD fell 87 pips | ATR says how far, never which way |
| Comparing MT5 and TradingView values | 63 against 66 pips on the same bars | Know your smoothing, use one platform |
| Target of 3 ATR on a day trade | Needs three average days in one session | 1 ATR per day held |
The first mistake is the expensive one. The ATR of GBP/USD was 121 pips on 23 March 2026 and 54 pips on 9 September. Same pair, same year — a ruler that shrank by more than half. A trader who kept the same 100-pip stop all year was stopped by noise in spring and over-sized in autumn, and never saw why.
ATR forex robots and the stop
When I ported our Forex V robots from MetaTrader 4 to MetaTrader 5 this autumn, the first thing I checked was not the entry logic. It was the stop in pips. The same input value meant one thing on AUDCAD and another thing on GBPUSD, and a third thing on GBPUSD in March against September.
That is the problem the ATR volatility indicator solves. A stop defined as a multiple of ATR survives not only a change of pair, but also a change of broker and of year — a stop in pips survives none of them.
There is a second use I like, and it is not in most articles. I divide today’s true range by the ATR before the robot opens a position in the second half of the day. On 6 November that ratio was 104 to 66, or 1.6. When the day has already done more than its average, the remaining room is smaller — and the robot takes a smaller target or waits.
Does this hold everywhere? I am not sure this rule helps on the yen pairs, where the big move often comes at 06:00 GMT. On the euro and the pound, in my logs, it does.
A note on the data. Every number on this page is calculated by me from daily EUR/USD and GBP/USD rates published by Pound Sterling Live. Your broker’s bars will differ by a few pips, because every broker has its own feed and its own daily close time. The method does not change.
If you take one thing from this page, take this. Open the daily chart of the pair you trade most, add a 14-period ATR, and read the number before you place the next order. Divide your planned stop by that number. If the result is below 1 or above 2, change the stop, not the ATR. Then size the lot from the stop, not from habit.
Stop, size, target, range check — all of it comes from one ruler. The more of your trade you measure with it, the steadier the account behaves when the market changes its mood.
See also what currency volatility is and how to trade it and how a pip turns into dollars on different lot sizes.
Sources: J. Welles Wilder, New Concepts in Technical Trading Systems, 1978; MetaTrader 5 documentation, Average True Range; Bank of England, Monetary Policy Summary, 5 November 2026; daily EUR/USD and GBP/USD rates from Pound Sterling Live, as of 6 November 2026.
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