RSI Calculator - Spot Overbought & Oversold Crypto Signals Instantly
Calculate the Relative Strength Index (RSI) from a price series. Identify overbought (>70) and oversold (<30) conditions with customizable periods.
RSI Calculator
๐ก Why Use This RSI Calculator?
RSI above 70 doesn't always mean sell - in strong bull trends, BTC and ETH can stay above 80 for weeks. This calculator computes RSI from your price series and identifies divergences, the most powerful RSI signal that most charting tools miss.
Pro Tip: In bull markets, RSI 'resets' to 40-50, not 30 - bearish setups appear when RSI fails to reach 70+ on new price highs, signaling weakening momentum.
Frequently Asked Questions
How do I calculate RSI for Bitcoin or any crypto?โบ
RSI = 100 โ (100 รท (1 + RS)), where RS = Average Gain รท Average Loss over N periods. Enter your closing prices and period (default 14) into this calculator for instant RSI values.
What RSI level should I use to buy crypto dips in 2026?โบ
RSI below 30 signals oversold conditions - historically strong buy zones for BTC on weekly charts. In alt season, RSI 40 on the daily often acts as dynamic support in up-trending altcoins.
What is RSI divergence and why does it matter?โบ
Bullish divergence: price makes lower low but RSI makes higher low - signals weakening selling pressure. Bearish divergence: price makes higher high but RSI makes lower high - signals weakening buying pressure. Both precede major reversals.
Related Tools
About This Tool
Calculate RSI for overbought/oversold signals
52+ Free Tools
No signup. No ads. Just math.
View All Tools โChoosing an exchange?
Find My Exchange โ