The rules
- +DI and −DI (14): the share of the average true range made by up moves and by down moves, Wilder-smoothed over 14 days.
- ADX (14): the Wilder-smoothed difference between +DI and −DI, 0 to 100. It measures strength, not direction.
- Strong trend: ADX 25 or more. No trend: under 20. Trend starting: ADX at 20 or more today and under 20 five bars ago.
- Direction: +DI above −DI is an uptrend, −DI above +DI a downtrend. DI cross: the two crossing in the last 5 daily closes.
Calculated in your browser from daily candles. Not investment advice.
Frequently asked questions
What is a good ADX value?
Most traders read 25 and above as a trending market and under 20 as a range. Above 40 is a very strong trend, which can also mean it’s stretched. ADX rising matters as much as the level.
Which markets can it scan?
Four, picked with the Market buttons above the table. Crypto (the default) scans the 250 busiest USDT pairs on Binance. Crypto perps scans the 200 busiest USDT perpetual futures on OKX. Both are free public data and need no key. US stocks scans about 600 US stocks and ETFs with your own free Alpaca key, and CME futures scans about 25 front-month CME Group contracts (stock indexes, Treasuries, oil, gas, metals, grains, livestock, currencies and CME bitcoin) with your own free Massive key.
Why do stocks and futures need a key?
Stock and futures prices are licensed data, so a website can’t hand them out for free. Alpaca (for stocks) and Massive (for futures) give anyone a free data key. Your key is saved only in your browser and sent only to that provider. See how to get a free Alpaca key and how to get a free Massive key for futures.
Is the data real-time?
Crypto and crypto perps are live from Binance and OKX, on daily candles that start at 00:00 UTC (today’s candle is still forming). Alpaca’s free stock data is 15 minutes behind the market, and Massive’s free futures plan is 8 hours delayed. Turn on auto-refresh next to the results to update the table in place every 30 seconds, minute or 5 minutes.