Currency Strength Meter: Score the 8 Majors Yourself

This free currency strength meter ranks the eight major currencies from seven numbers you can read off any quote board. Enter the percentage change of the seven USD majors and the tool converts each one into a move against the dollar. It then removes the average, so the eight scores always add up to zero. Fill the second and third columns to check whether the same ranking holds on other timeframes. Everything runs in your browser, and the full formula is written out below in plain arithmetic.

How to use this currency strength meter

The workflow takes about a minute once you know where the numbers live.

1. Open a quote board that prints percentage change per pair. Our forex heatmap and live forex rates pages both show it.
2. Pick the timeframe you actually trade and set the label in column one. The label is documentation, not math. It reminds you which window produced the scores.
3. Type the seven changes into column one, keeping the sign. A minus sign matters more than any decimal place here.
4. Read the ranked bars. Green sits above the group average, red sits below. The number to the right is the score to two decimals.
5. Fill columns two and three with the same seven pairs measured on longer windows. The alignment column then marks every currency that leans the same way on all filled timeframes.
6. Take the pairing the tool suggests as a shortlist, not an order. Check the spread, the session and the correlation before you look for an entry.

What currency strength actually measures

A currency strength meter does not measure value. It measures relative movement across one lookback window. The tool converts seven pairs into eight moves against the dollar, then subtracts the average of those moves. What survives is each currency's performance relative to the group.

That subtraction is why the eight scores always sum to zero. Currencies only move against each other. If all eight rose, there would be nothing left for them to rise against. So a positive score means stronger than the eight-currency average, never stronger in absolute terms.

The scale has no natural unit either. A score of +0.87 does not mean 0.87 percent. It means this currency beat the group average by 0.87 percentage points over your window. Change the window and every number changes with it.

The zero-sum property also explains a common surprise. On a quiet morning the whole board can sit between -0.10 and +0.10. Nothing is strong. The meter still produces a ranking, because ranking is the only thing it does. Read the size of the scores, not just the order. A compressed board is the meter telling you it has nothing useful to say.

The math, written out in full

Here is every step, with nothing hidden behind a black box.

Step one converts each pair into the non-dollar currency's move against USD. Four pairs quote the dollar second, so their change passes through unchanged: u_EUR = EURUSD%, u_GBP = GBPUSD%, u_AUD = AUDUSD%, u_NZD = NZDUSD%. Three pairs quote the dollar first, so their sign flips: u_JPY = -USDJPY%, u_CHF = -USDCHF%, u_CAD = -USDCAD%. The dollar is the reference point, so u_USD = 0.

Step two takes the mean of all eight u values, including that zero for USD. Step three subtracts the mean from each one. In symbols, strength_c = u_c - mean(u). Those eight results are the scores you see.

The entire model is one subtraction. No smoothing, no weighting, no hidden basket of crosses. That is a deliberate choice. You can redo every number on paper in a minute, which means you can audit the tool instead of trusting it.

A worked example, walked through

The tool loads with a realistic set already typed in. Column one holds these H1 changes: EURUSD +0.42, GBPUSD +0.28, AUDUSD -0.15, NZDUSD -0.22, USDJPY +0.65, USDCHF +0.10, USDCAD -0.05.

Convert them first. EUR, GBP, AUD and NZD keep their signs, so they stay at +0.42, +0.28, -0.15 and -0.22. The three dollar-base pairs flip. USDJPY rose 0.65 percent, which means the yen fell, so u_JPY is -0.65. USDCHF gives -0.10. USDCAD fell 0.05 percent, so the Canadian dollar gained and u_CAD is +0.05. USD sits at 0 as the reference.

Now add the eight values: 0.42 + 0.28 - 0.15 - 0.22 - 0.65 - 0.10 + 0.05 + 0.00 = -0.37. Divide by eight and the mean is -0.046.

Subtract that mean from every value. EUR becomes +0.47 and takes first place. GBP becomes +0.33. CAD becomes +0.10 and USD becomes +0.05. Below the line, CHF sits at -0.05, AUD at -0.10, NZD at -0.17, and JPY at -0.60.

Watch what the mean-centring did to the dollar. Its raw value was exactly zero, yet its score came out at +0.05. The dollar outperformed the average of the group even while acting as the reference. That is the arithmetic behaving correctly, not a rounding artefact.

Reference table: the same example on two timeframes

Column two of the tool holds an H4 set for the same seven pairs. The table below shows both, plus the alignment verdict the meter prints.

Strong against weak: the pair selection workflow

Pair selection is the meter's real job. You are looking for the widest honest gap on the board, then the tradeable instrument that expresses it.

In the example above, EUR ranks first at +0.47 and JPY ranks last at -0.60. The spread between them is 1.07 points, the largest available. The instrument that expresses that gap directly is EURJPY, on the buy side. Buying EURJPY is the same as buying the strongest currency with the weakest one.

Compare that to the middle of the board. USD sits at +0.05 and CHF at -0.05. Trading USDCHF on a 0.10 gap means paying a real spread to chase almost nothing. The extremes carry the information. The middle rarely does.

Three checks before you act on the shortlist. First, is the gap wide relative to the rest of the board? Second, is the cross liquid during your session? Exotic crosses widen hard outside London and New York, so use the forex market hours clock to confirm. Third, does a scheduled release sit inside your holding window? Check the economic calendar first, because one central bank headline can reverse the whole ranking in seconds.

Only then do you go to the chart for structure, entry and stop. Size the trade with the position size calculator so the idea costs a fixed amount if it fails.

Why two currency strength meters never show the same numbers

Open three strength dashboards side by side and you will see three different boards. This confuses new traders, who assume one must be broken. None of them are. There is no official definition of currency strength, so every tool invents its own.

The differences come from four choices. The lookback is the biggest one. A meter measuring the last 24 hours will disagree with one measuring the last 14 bars of H1. Neither is wrong; they answer different questions.

The basket is the second choice. This tool uses the seven USD majors, which keeps the arithmetic transparent. Other meters add all 28 major crosses, so EURGBP and AUDNZD influence the result too. Broader baskets are smoother and slower to turn.

The weighting is third. Some tools weight each pair by liquidity, volatility or ATR, so a one percent move on a quiet pair counts differently from a one percent move on a busy one. Ours weights everything equally, which is simple and also a limitation.

The data source is fourth. Your broker's feed, the closing convention and the server timezone all shift where a bar starts. Two meters using an identical formula can still disagree simply because their day begins at a different hour.

Strength describes the window it measured

This is the part most strength tools quietly skip. A score is a summary of the past. It is descriptive, not predictive.

When the meter says EUR is the strongest currency, it is stating a fact about the bars behind you. It says nothing about the next bar. A currency can top the board precisely because a move is already finished and stretched.

Think of it like a league table at half-time. It records what happened. It does not tell you the second half will look the same. Traders who buy the top and sell the bottom on that basis alone are chasing moves that already ran.

The productive use is filtering. If your system fires a long signal on EURJPY, and the meter shows EUR strong with JPY weak, the two agree and you have context. If the meter shows the opposite, that is a reason to check your setup harder, not proof it will fail. Log both cases in a trade journal and let your own data decide whether the filter earns its place.

Multi-timeframe alignment is a filter, not a signal

The second and third columns exist to answer one question. Does this ranking survive a change of window?

A currency that ranks positive on H1, H4 and D1 has been outperforming across three different lookbacks. That is a broader, slower move. A currency that flips sign between windows is being pushed by something short-lived. The meter marks the first case Aligned and the second Mixed.

In our worked example, EUR and GBP are aligned strong, while JPY and CHF are aligned weak. AUD and CAD flip between H1 and H4, so they read Mixed. If you wanted the cleanest expression on that board, EURJPY is aligned at both ends. Anything involving AUD or CAD is not.

Two warnings. Alignment is not confirmation, it is agreement between two views of the same data. Longer windows contain the shorter ones, so the readings are related by construction. And alignment lags, because a slow window turns slowly. You will miss the first part of most reversals. That is the price of the filter, and it is worth knowing before you rely on it.

Where to read the percentage changes

You need the same seven numbers, measured over the same window, from one consistent source. Mixing sources is the fastest way to produce a meaningless board.

The easiest path is our own forex heatmap, which prints percentage change per pair and lets you switch the window. The live forex rates page gives the same data in table form. Either one fills the tool in under a minute.

MT4 works too, with one caveat. The Market Watch window does not print a percent-change column by default. Right-click it and enable the extra columns your broker offers; some feeds add a daily change field, many do not. If yours does not, open each pair on your chosen timeframe and compute the change yourself: subtract the bar open from the current price, divide by the open, then multiply by 100.

For a broader scan across more instruments, the forex screener sorts by change directly. Whatever source you use, keep it constant. Consistency matters far more than precision here.

Policy rates set the slow background

Daily strength readings are noise on top of a slower story. Much of that story is interest rate differentials. Capital drifts toward higher-yielding currencies, and repricing expectations move currencies hard.

These are the policy rates published on our interest rate tracker as of July 2026.

Two practical notes. The rate gap decides your swap, so a long AUDJPY position earns carry while the reverse pays it. And rates move markets through surprise, not level. A hold that markets did not expect can outrank a cut that everyone priced weeks ago.

Correlation explains the clusters you see

Look at a strength board over a few days and you will notice currencies travelling in pairs. AUD and NZD rise together. EUR and CHF often do the same. That is not a coincidence, and it is not the meter malfunctioning.

The long-run figures on our forex correlation matrix explain it. AUDUSD and NZDUSD correlate at +0.85, so their strength scores move nearly in step. EURUSD and USDCHF correlate at -0.90, which means EUR strength and CHF strength track each other closely once the sign flip is applied. EURUSD and GBPUSD sit at +0.85 for the same reason.

The consequence is important. Eight scores are not eight independent opinions. The board holds perhaps three or four genuinely separate stories: a dollar story, a European bloc, a commodity bloc, and the yen doing its own thing.

This also creates a risk trap. Long EURJPY and long GBPJPY look like two ideas. With EUR and GBP correlated at +0.85, they are close to one idea in double size. Count correlated positions as a single exposure when you size them.

What this currency strength meter cannot tell you

Honesty about limits is more useful than another feature. Here is what this tool does not know.

It does not know direction. The scores summarise a finished window. Nothing in the arithmetic looks forward.

It does not know volatility. A -0.60 on JPY and a -0.60 on CHF look identical here, but the yen typically ranges further. Two equal scores can represent very different-sized real moves.

It does not know your costs. The suggested cross may carry a wide spread or a negative swap that eats the edge you thought you found. Check both before trading.

It weights every pair equally. That keeps the math checkable, but it lets a thin, jumpy pair push a currency around as hard as a deeply liquid one.

It is only as fresh as your typing. These are hand-entered numbers. A board built ten minutes before a rate decision is already history.

It covers eight currencies and no metals. Gold, oil and the Scandinavian currencies sit outside the model entirely, even though XAUUSD correlates with several of these pairs.

It cannot rank the middle reliably. When six currencies sit inside a 0.10 band, their order is mostly rounding. Trust the extremes and ignore the crowd in the centre.

MT4 currency strength indicators in the library

Typing seven numbers by hand is fine for a daily review. It is a poor fit for live trading. That is what an on-chart dashboard is for.

The library includes currency strength meters and multi-pair dashboards that read the same seven majors straight from your terminal and update on every tick. Most versions plot eight strength lines in a sub-window, and several print a sortable panel in the chart corner. The best MT4 indicators guide lists the strongest of them alongside the trend, volume and structure tools worth pairing with a strength read.

One detail to check on any strength indicator you download: the lookback setting. A meter using 14 bars of H1 and a meter using a fixed 24-hour window will show you different boards from identical data. Set it to match the window you actually trade, then leave it alone.

Every download here ships compiled for MT4 and MT5, and each one is tested on live charts under the Editorial and Testing Policy. Browse the full set of free calculators and dashboards on the forex tools hub.

Want the full toolkit? Get the complete database.

FAQ

What does a positive currency strength score mean?

It means that currency outperformed the average of the eight majors over your lookback window. It is a relative reading, not an absolute one. A score of +0.47 says the currency beat the group average by 0.47 percentage points, nothing more.

Why do the eight scores always add up to zero?

Because the tool subtracts the group mean from every value. Currencies only move against each other, so nothing survives once you remove the average. If seven read positive, the eighth carries the whole negative balance.

Which timeframe should I use?

Match the window to your holding period. Scalpers read M15, intraday traders read H1 or H4, swing traders read D1 and W1. Filling two columns beats agonising over one, because the alignment check shows where the windows disagree.

Why does my broker's strength indicator disagree with this tool?

Different lookback, different basket, or different weighting. No official definition of currency strength exists, so every tool builds its own. Ours uses the seven USD majors with equal weights and no smoothing, and the formula is printed above.

Can a currency strength meter tell me when to enter a trade?

No. It ranks what already happened and offers no entry, no stop and no position size. Treat it as a pair-selection filter in front of your own setup, and test that filter on a demo account first. Results are not guaranteed; past performance is not indicative of future results.