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RSI Calculator. Run the numbers, then check the live market.

Paste your closing prices and a period to get the Relative Strength Index — plus whether it reads overbought, oversold, or neutral.

Comma, space, or newline separated. Oldest first.

Number of changes averaged. 14 is the common default.

RSIOverbought

RSI value73.29
ReadingOverbought
Prices used16
Period14

RSI describes past momentum on a 0–100 scale using Wilder’s smoothing. Overbought and oversold are context, not buy or sell signals.

Next step

Read this against the live market

Save your RSI read, then see live BTC momentum and market context on the Market OS desk.

FAQ

Straight answers, no hedging.

What is the RSI (Relative Strength Index)?

RSI is a momentum oscillator that measures the speed and size of recent price changes on a 0–100 scale. It compares average gains to average losses over a lookback period (commonly 14) to show whether an asset has been bought or sold aggressively. It describes past momentum — it is not a buy or sell signal.

How is RSI calculated?

Split each period's price change into gains and losses, average them over the lookback using Wilder's smoothing, then compute RS = average gain ÷ average loss and RSI = 100 − 100 ÷ (1 + RS). You need at least period + 1 closing prices to produce one RSI value.

What do overbought and oversold mean?

By convention RSI above 70 is called 'overbought' and below 30 'oversold' — momentum has been strong in one direction. They are context, not signals to trade: strong trends can stay overbought or oversold for a long time.

Does this calculator give trading advice?

No. Every output is general market and risk education — not financial advice, investment advice, or a recommendation to trade. What you do with the numbers is your decision and your responsibility.

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RSI Calculator | Relative Strength Index for Crypto & Stocks | Glimpse