Round Numbers – automatic psychological thresholds - indicator for MetaTrader 5

RoundNumbers draws horizontal lines at the round numbers surrounding the price displayed on the screen, for example 1.1000 and 1.1050 on EUR/USD, 2650.00 on gold or 30500 on a stock index. Round numbers are psychological levels where many orders are placed, so the price often reacts around them.

What it draws:

- A thin dotted line at every step of the grid

- A thicker solid line at every tenth step (the major figures)

- The step size is determined automatically based on the chart’s zoom level, ensuring the screen always displays a manageable number of lines

- The lines follow the chart when you scroll or change the scale

Inputs:

- Fixed step in price units (0 = automatic)

- Maximum number of lines on the screen for the automatic step

- Colours of minor and major levels and the style of minor lines

Notes:

- Works on any instrument (forex, metals, indices, cryptocurrencies) and any timeframe

- Only the visible area is plotted, so it is light on system resources

- It is an information tool, not a trading system: it does not guarantee any profit

How to use:

1. Copy RoundNumbers.mq5 into the MQL5\Indicators folder of your terminal (File – Open Data Folder) and compile it in MetaEditor.

2. Drag RoundNumbers from the Navigator window onto a chart.

3. Leave the step set to 0 for the automatic grid, or enter your own step (0.0050 for a 50-pip grid on EURUSD).

Tips:

- Check how the price behaves as it approaches a major (solid) level, using the previous day’s high and low as a secondary reference.

- Round numbers are good places to look for stop and target areas, not exact entry points.