ATR numbers from different coins can't be compared directly. Bitcoin's ATR might be 1200, while Dogecoin's is 0.008 — but that doesn't mean Bitcoin is a thousand times more volatile than Dogecoin. The difference comes solely from the price base. Converting ATR into a percentage (ATR%) solves this problem. The formula is (ATR / Price) × 100%.
Step 1: Get the Current ATR and Current Price
Bring up the ATR indicator on your chart (keep the default period of 14).
What to do: Record the ATR value at the close of the current candle, along with the closing price at that same moment.
How to do it: Open TradingView or your trading platform, hover over the ATR indicator line to see the exact value. Also note the closing price (Close) for that period.
Completion criteria: You now have two numbers — ATR (e.g., 1200) and the price (e.g., 60,000).
Many trading platforms already offer an ATR% indicator so you don't have to calculate manually. In TradingView, search for "ATRP" or "ATR%" in the indicators panel, and it will display directly as a percentage. If you use Gate.io or Binance, the built-in ATR usually shows absolute values, so you'll need to convert manually.
Step 2: Manual Conversion to Percentage
If you can't find a ready-made ATR% indicator, just do the math yourself.
What to do: Divide the ATR value by the price, then multiply by 100.
How to do it: The formula is: ATR% = (ATR ÷ current price) × 100%. Using Bitcoin as an example: 1200 ÷ 60,000 × 100% = 2%. This means the average daily fluctuation of Bitcoin is equivalent to 2% of its price.
Completion criteria: You get a number with a percent sign, such as 2%.
Common Mistake
Some people directly compare ATR% from different timeframes — for example, daily ATR% vs. 1-hour ATR%. These two numbers are not comparable. The daily number represents average volatility per day, while the 1-hour number is per hour; the baseline is different. When comparing across different assets, you must use the same timeframe. If you're comparing Bitcoin and Ethereum, compare daily ATR% to daily ATR%, or 1-hour to 1-hour.
Step 3: Use ATR% for Cross-Coin Comparison or Position Sizing
Once you have the percentage, you can do two useful things with it.
Case A: Compare volatility intensity across different coins. Let's say you're looking at BTC and SOL. BTC's ATR% is 2%, SOL's is 5%. The conclusion is clear: SOL's daily swings are 2.5 times larger than BTC's. If you want more aggressive moves, pick SOL; if you prefer stability, go with BTC.
Case B: Adjust position size. If you like to allocate positions based on volatility, ATR% is the key input. Position size can be calculated as: risk amount ÷ (price × ATR%). This logic is used in both traditional finance and crypto quantitative trading. Suppose you're willing to risk 1% of your total account on a trade, and Bitcoin's ATR% is 2%. You need to size your position so that a 2% price move equals exactly 1% of your account.
Completion criteria: You can now directly tell someone "this coin moved an average of X% today" using ATR%, without having to explain "its price is low so the absolute ATR doesn't matter."
Verification: Pull up daily charts for two different coins and add the ATR% indicator to both. If the coin with the higher ATR% is indeed the one that looks more jumpy in your day-to-day chart watching, your conversion is correct.
Next step: Treat ATR% as your "volatility unit" going forward. Next time you spot a new altcoin, pull up the daily ATR% first. If it's above 5%, tighten your stop-loss distance and position size accordingly before you even enter the trade.
