Each candle covers a fixed slice of time, whether a minute, an hour or a day, and packs four numbers into one shape. The rectangular body runs between the opening and closing price, drawn in the up colour if the close was higher and the down colour if it was lower. The thin lines above and below, called wicks or shadows, mark the highest and lowest prices traded in that slice.
The appeal over a plain line chart is that a candle shows range as well as level. A long upper wick tells you price reached somewhere and did not stay there. A small body with wicks on both sides says the period ended roughly where it began after travelling in both directions. That is genuinely more information than a single closing dot can carry.
Then come the pattern names, the dojis and hammers and engulfing candles. Be careful here. These are descriptions of shapes that have already formed, drawn from data that has already printed, so they summarise past behaviour and do not forecast the next candle. The same shape appears constantly in charts that then rise, fall or go nowhere, and a pattern only exists once the period has closed, which is by definition late.
Practical details trip people up more often than theory does. Daily candles depend on where an exchange places its day boundary, so the same asset can look different across venues and time zones. In a thin market a single order can paint a dramatic wick. Switching timeframes until the chart agrees with you is not analysis. Smoothing tools such as a <a href="/glossary/moving-average/">moving average</a>, or the real depth shown in an <a href="/glossary/order-book/">order book</a>, supply context a candle alone cannot.
How to Read a Crypto Price Chart
Key takeaways
- One candle carries four numbers, plus the timeframe it covers, and changing that timeframe changes the story completely.
- Candle patterns are named descriptions of price that has already traded, not signals about what comes next.
- Daily candles depend on the venue's day boundary, so identical assets can produce different-looking charts.
Candlestick — frequently asked questions
Do candlestick patterns actually work?
They are a compact way to describe what price did, and that has real value. As predictors they are much weaker than their vocabulary suggests, because a pattern only completes after the period closes, the same shapes appear ahead of every outcome, and results depend heavily on timeframe and conditions. Use them to read history, and stay sceptical of anyone selling them as signals.
Which timeframe should I look at?
It depends entirely on the question you are asking, and no timeframe is more true than another. A one-minute chart and a weekly chart of the same asset can tell opposite-looking stories while both are accurate. The failure mode is flicking between timeframes until one supports a conclusion you had already reached, so decide which horizon matters to you first.
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