Exchange rates & currency charts

A currency chart typically plots the exchange rate of one currency against another over time. The horizontal axis shows dates; the vertical axis shows how many units of the quote currency (e.g. USD) are needed to buy one unit of the base currency (e.g. EUR). When the line rises, the base currency has strengthened relative to the quote currency; when it falls, the base has weakened.

Professional traders use multiple timeframes—from intraday to monthly—to spot trends and volatility. For personal and business use, weekly or monthly views often help answer questions like “Has the euro been generally stronger against the dollar this quarter?” That context can support timing for large transfers, though no one can predict rates with certainty.

Bid, ask, and mid-market. Banks and providers quote a bid (what they buy at) and an ask (what they sell at). The mid-market rate lies between them and is often used as a benchmark. Retail customers rarely receive the exact mid-market rate because providers include a spread or fee—but comparing your offered rate to a published mid can help you assess fairness.