Trend Strength Calculator
Quickly compute trend strength with accurate formulas. See amortization schedules, growth projections, and side-by-side comparisons.
Formula
Composite Score = ADX Points (0-40) + DI Spread Points (0-30) + MA Alignment Points (0-30)
ADX measures trend intensity (0-100 scale). +DI and -DI determine direction. Moving average positioning confirms trend alignment. ATR provides volatility context and risk levels. The composite score combines all factors into a 0-100 rating.
Worked Examples
Example 1: Strong Uptrend in EUR/USD
Problem: EUR/USD at 1.1050. ADX: 35, +DI: 38, -DI: 15. SMA20: 1.0980, SMA50: 1.0920. ATR(14): 0.0085.
Solution: ADX 35 = Strong Trend\n+DI (38) > -DI (15): Bullish direction\nDI Spread: 23 (wide = strong directional move)\nPrice above SMA20 and SMA50, SMA20 > SMA50: Strong Bullish MA signal\nComposite: ADX(28) + DI(30) + MA(30) = 88/100\nStop Loss: 1.1050 - 2(0.0085) = 1.0880\nTake Profit: 1.1050 + 3(0.0085) = 1.1305
Result: Composite: 88/100 | Strong Bullish Trend | SL: 1.0880 | TP: 1.1305
Example 2: Weak Ranging Market in GBP/USD
Problem: GBP/USD at 1.2650. ADX: 14, +DI: 20, -DI: 22. SMA20: 1.2670, SMA50: 1.2640. ATR(14): 0.0110.
Solution: ADX 14 = No Trend (below 20)\n-DI (22) slightly > +DI (20): Slight bearish bias\nDI Spread: 2 (very narrow = no directional conviction)\nPrice below SMA20 but above SMA50: Mixed signal\nComposite: ADX(11.2) + DI(3) + MA(10) = 24/100\nATR%: 0.87% = Moderate volatility
Result: Composite: 24/100 | No Trend / Ranging | Consider range-bound strategies
Frequently Asked Questions
What is the ADX indicator and how does it measure trend strength?
The Average Directional Index (ADX) is a technical analysis indicator developed by J. Welles Wilder Jr. in 1978 to quantify the strength of a price trend, regardless of its direction. ADX values range from 0 to 100, with readings below 20 indicating a weak or absent trend, 20-25 suggesting a developing trend, 25-50 indicating a strong trend, and above 50 signifying an extremely powerful trend. The ADX is derived from two directional indicators: the Positive Directional Indicator (+DI) and the Negative Directional Indicator (-DI). While ADX tells you HOW strong the trend is, the +DI and -DI tell you the DIRECTION. When +DI is above -DI, the trend is bullish; when -DI is above +DI, the trend is bearish.
What role do moving averages play in confirming trend strength?
Moving averages serve as dynamic support and resistance levels and provide trend confirmation when used alongside the ADX system. The 20-period SMA captures short-term trend direction, while the 50-period SMA reflects the intermediate trend. When price is above both moving averages and the 20 SMA is above the 50 SMA, all three conditions align to confirm a strong bullish trend. Conversely, when price is below both averages and the 20 SMA is below the 50 SMA, a strong bearish trend is confirmed. The distance between price and the moving averages indicates how extended the move is; prices far from their averages tend to revert. Moving average crossovers (the golden cross and death cross) provide additional trend change signals that complement ADX readings effectively.
What is a composite trend score and how should traders use it?
A composite trend score combines multiple technical indicators into a single numerical value that provides a holistic assessment of trend quality and strength. Trend Strength Calculator integrates ADX strength, directional indicator spread, and moving average alignment into a score from 0 to 100. Scores above 70 suggest a strong, well-confirmed trend suitable for trend-following strategies. Scores between 40 and 70 indicate moderate trends where caution and tighter risk management are appropriate. Scores below 40 suggest weak or absent trends where range-bound strategies may be more effective than trend-following approaches. Traders should use composite scores as a screening tool rather than a standalone trading signal, combining them with price action analysis, support and resistance levels, and fundamental factors for complete trading decisions.
Can I use the results for professional or academic purposes?
You may use the results for reference and educational purposes. For professional reports, academic papers, or critical decisions, we recommend verifying outputs against peer-reviewed sources or consulting a qualified expert in the relevant field.
Can I share or bookmark my calculation?
You can bookmark the calculator page in your browser. Many calculators also display a shareable result summary you can copy. The page URL stays the same so returning to it will bring you back to the same tool.
How do I get the most accurate result?
Enter values as precisely as possible using the correct units for each field. Check that you have selected the right unit (e.g. kilograms vs pounds, meters vs feet) before calculating. Rounding inputs early can reduce output precision.