How to Draw Trendlines on a Forex Chart (Step-by-Step Guide)

If you just learned how to draw horizontal Support and Resistance zones, you already know how to find the flat floors and ceilings of a chart.

However, the forex market rarely moves sideways forever. Over long periods of time, currencies and commodities (like XAU/USD Gold) build strong momentum and march either steadily upward or steadily downward.

When price moves at a diagonal angle, flat horizontal lines are no longer enough by themselves. You need to draw diagonal support and resistance levels to track the direction of the market.

We call these diagonal lines Trendlines.

Drawing clean trendlines is one of the most practical, everyday skills a technical analyst uses. Yet, beginners often get frustrated because they don’t know where to click, how many points to connect, or whether the line should cut through the candlesticks.

In this step-by-step guide, you will learn how to draw trendlines on a forex chart, the strict rules for making a line valid, and how to use them to find high-probability trade setups.

What is a Trendline in simple words?

A trendline is a straight diagonal line drawn across the peaks or valleys of a price chart to visually show the direction and speed of a market trend.

Think of a trendline like the handrail on a staircase:

• If you are walking up a flight of stairs, the handrail runs underneath your hand at a diagonal angle, guiding your path upward.
• If you are walking down a flight of stairs, the handrail runs along the top, guiding your path downward.

In forex, as long as the candlesticks keep respecting the diagonal handrail and bouncing off of it, you know the trend is healthy and continuing.

The 3 Golden Rules of Drawing Trendlines

Before you open your charting platform (TradingView / MetaTrader), you must memorize three simple mathematical rules. If you break these rules, your line is just a random line—not a valid trendline.

Rule 1: It takes TWO points to draw a line, and THREE points to confirm it

Anybody can connect two random points on a screen. A trendline only becomes a confirmed, high-probability technical level after price touches it a third time and successfully bounces off of it.

Rule 2: Never force a line to fit

If you have to twist, bend, or draw a line at an awkward, steep 85-degree angle just to make it touch the candlesticks, the trendline is not real. A clean trendline should jump right out at your eyes almost instantly. If you have to force it, delete it.

Rule 3: Never cut through the middle of a candlestick body

A valid trendline should rest neatly against the edges of the candlesticks. If your diagonal line cuts right straight through the thick, colored bodies of three or four candles along the way, your line is drawn incorrectly.

How to Draw an Uptrend Line (Step-by-Step)

An uptrend happens when the market is consistently climbing higher over time, creating a stair-step pattern known as Higher Highs (HH) and Higher Lows (HL).

When drawing an uptrend line, you must always draw your line along the BOTTOM of the candlesticks (underneath the price).

Here is how to draw it on your screen right now:

Step 1: Zoom out to a clean timeframe

Start by looking at the 1-Hour (H1) or 4-Hour (H4) chart. Higher timeframes produce significantly smoother and more reliable trends than choppy 1-minute charts.

Step 2: Find the lowest starting point (Valley #1)

Look at the bottom-left area of your recent chart swing and spot the very lowest V-shaped valley where the upward move first began. Click your Trendline tool right at the bottom edge of that valley.

Step 3: Connect to the next higher valley (Valley #2)

Drag your diagonal line upward and to the right until it touches the bottom of the very next valley (the Higher Low). Stretch the line far out to the right side of your screen into the empty future space of the chart.

Step 4: Wait for Touch #3 (Your Entry Opportunity!)

You now have a working diagonal support line! As the market continues to climb, wait patiently for price to pull back down and touch your diagonal line for the third time.
When price hits Touch #3, shows a rejecting candlestick wick, and starts bouncing back upward, that bounce is where technical traders look to Buy into the uptrend.

How to Draw a Downtrend Line (Step-by-Step)

A downtrend happens when the market is consistently falling over time, creating a downward stair-step pattern known as Lower Lows (LL) and Lower Highs (LH).

When drawing a downtrend line, you must always draw your line along the TOP of the candlesticks (above the price).

Here is how to draw it on your screen:

Step 1: Find the highest starting point (Peak #1)

Look at the top-left area of your recent chart swing and find the absolute highest A-shaped peak where the market crash first began. Click your Trendline tool at the top of that peak.

Step 2: Connect to the next lower peak (Peak #2)

Drag your diagonal line downward and to the right until it touches the top edge of the very next lower peak (the Lower High). Extend the line out to the right side of the screen into the future.

Step 3: Wait for Touch #3 (Your Selling Opportunity!)

You now have a working diagonal ceiling above the market. As price falls, it will eventually rally upward to take a breath and touch your diagonal line for the third time.
When price hits Touch #3 and gets rejected back downward, technical traders look to Sell into the downtrend.

Wicks vs. Bodies: Where should the line touch?

As you start drawing trendlines today, you will instantly run into the most debated question in technical analysis: Should my diagonal line touch the tip of the thin Wicks, or the edges of the thick Bodies?

Here is the honest, professional answer: Use whichever gives you the cleanest, most consistent touches across your specific chart.

• Some charts (like major currencies during the London session) will line up perfectly right along the tips of the wicks.
• Some fast-moving charts (like XAU/USD Gold during high-impact news spikes) have crazy, jagged wicks. On those charts, connecting the edges of the real bodies while letting the wild wicks poke slightly past your line will give you a much cleaner structure.

Remember our lesson from horizontal levels: A trendline acts more like a diagonal cushion or zone, rather than a microscopic laser beam. As long as you aren’t slicing straight through the center of the candle bodies, slight overlaps with wicks are completely acceptable!

What happens when a Trendline breaks? (The Trend Change)

No trend lasts forever! Eventually, an uptrend will run out of buying power, or a downtrend will run out of selling momentum.

When a candlestick aggressively smashes through your diagonal handrail and closes completely on the opposite side of the line, a Trendline Breakout has occurred.

Why a Trendline Breakout matters to beginners:

A clean trendline break is your early warning alarm that the current trend is likely dying or reversing direction:

• If price breaks cleanly below an Uptrend line, the buyers are losing control, and the market may be getting ready to crash downward into a new downtrend.
• If price breaks cleanly above a Downtrend line, the sellers are losing power, and the market may be getting ready to rally upward into a new uptrend.

When your trendline breaks, delete it from your chart. The old diagonal structure is finished, and it is time to wait for a new trend to form!

Common beginner mistakes with Trendlines

1. Drawing Trendlines on the wrong side of price

Beginners often draw diagonal lines underneath a falling downtrend, or on top of a rising uptrend. Always remember the golden rule: Draw UNDER the valleys in an Uptrend (diagonal floor), and OVER the peaks in a Downtrend (diagonal ceiling).

2. Drawing lines across 15 tiny candles inside a 10-minute range

If your trendline only covers 30 minutes of sideways price action on a 1-minute chart, it has zero technical weight. A good trendline should connect major, obvious market swings across several hours or days.

3. Chasing a trade on Touch #6 or Touch #7

The strongest and most reliable bounces on any trendline almost always happen on Touch #3 and Touch #4. By the time a market hits a diagonal line for the 6th or 7th time, the trend is usually exhausted and has a very high chance of finally snapping and breaking out.

Your Step-by-Step Trendline Routine

Next time you open your charting software, follow this quick, practical routine:

1. Check the H1 or H4 chart to see if price is climbing up stairs or falling down stairs.
2. If price is climbing, find two clear Valleys (bottoms) and connect them diagonally.
3. If price is falling, find two clear Peaks (tops) and connect them diagonally.
4. Stretch the line right into the future space of your screen.
5. Set an alert on your platform right on your diagonal line, so your phone buzzes automatically the exact minute price pulls back for Touch #3!

Simple way to remember Trendlines

Uptrend Line = Drawn along the BOTTOM = Connects the valleys.
Downtrend Line = Drawn along the TOP = Connects the peaks.

And:

It takes 2 touches to draw the line, but it takes Touch #3 to confirm the trade opportunity.

Final thoughts

Trendlines are the simplest and most visually powerful drawing tool in a technical trader’s toolkit.

To keep it simple:

• trendlines are straight diagonal lines that show the direction and angle of a market trend
• they act as diagonal Support (floors) in an uptrend, and diagonal Resistance (ceilings) in a downtrend
• you must connect at least two obvious peaks or valleys to draw a working line, and look for bounces on the third touch
• you can connect either the tips of the wicks or the edges of the real bodies, as long as the line does not cut straight through the middle of the candlesticks
• a clean, confirmed candle close through the opposite side of your trendline signals that the trend may be ending or reversing

By combining your knowledge of horizontal Support and Resistance zones with clean diagonal Trendlines, you now possess the core technical charting framework used by professional analysts all across the globe.