How to use Currency History Viewer
- 1
Select a base currency and a target currency.
- 2
Choose a time range: 7, 14, 30, or 90 days.
- 3
See the exchange rate history chart and the percentage change over the period.
Currency History Viewer
View live exchange rate history for any currency pair with an interactive sparkline chart. Choose 7, 14, 30, or 90-day range. Powered by ECB data.
Frequently Asked Questions
Where does the data come from?
Exchange rates are sourced from the European Central Bank (ECB) via the free Frankfurter.app API. Data is updated on each business day.
Is this data real-time?
ECB rates are updated once per business day (approximately 16:00 CET). For real-time rates, a paid data provider would be needed.
Understanding Currency Movements Over Time
A live exchange rate tells you what a currency is worth right now. But exchange rate history tells you something much more useful: where a currency has been, how stable it is, and whether today's rate is near a high or a low for the period.
Our Currency History Viewer pulls real exchange rate data from the European Central Bank (ECB) via the free Frankfurter.app API. No pay walls, no sign-ups, just clean historical exchange rate data displayed as an interactive chart.
How to Read the Chart
The chart shows the exchange rate over your selected time period. The left side of the chart is the oldest date in the range. The right side is the most recent date.
The percentage change displayed alongside the chart tells you how much the rate has shifted over the chosen period. A positive number means the base currency strengthened against the target; a negative number means it weakened.
For example: if USD/BDT shows +2.3% over 30 days, it means one US Dollar buys 2.3% more Bangladeshi Taka today than it did 30 days ago.
What the Data Tells You
Short ranges (7 or 14 days): Shows recent volatility. Useful for tracking a currency in the middle of a news event or economic announcement.
Medium range (30 days): The most common view for general tracking. Gives a good picture of a currency's behaviour in recent weeks.
Long range (90 days): Shows seasonal trends and larger structural shifts. Useful for international business planning or understanding a currency's direction.
Practical Uses
Converting money internationally: Check if today is a good day to exchange, or if the rate has been better recently and may improve.
Freelancers receiving foreign currency: Track whether your USD or EUR earnings are worth more or less in your local currency over time.
Travel planning: Monitor the exchange rate for your destination country in the weeks before travel to decide the best time to exchange.
Import/Export businesses: Keep an eye on relevant currency pairs that affect your costs or revenues.
About the Data Source
Rates come from the European Central Bank and are updated once per business day, approximately at 16:00 Central European Time. Weekends and public holidays have no update. The data reflects interbank rates — the rates you see at a bank or exchange service will be slightly different due to fees and margins.
Privacy Guaranteed
Your data never leaves this device. All processing is handled locally by JavaScript.
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