Enter a currency pair and two dates to see how much the exchange rate moved between them, with a quick Stable-to-Volatile verdict.
This tool looks up the historical exchange rate for your chosen currency pair on both dates and calculates the percentage change between them.
From currency: To currency:
Start date:
End date:
How It Works
This tool looks up the historical exchange rate for your chosen currency pair on both dates and calculates the percentage change between them.
How to Use This Tool
- Choose the two currencies you want to compare.
- Enter a start date and an end date.
- Click Check Swing to see the percentage change and a volatility verdict.
Historical rate data availability can vary by provider and currency; very recent dates, weekends, or less common currency pairs may occasionally return no data.
The formula: percentage change = (end rate − start rate) ÷ start rate × 100. The verdict then uses the size of that change: under 3% is Stable, 3% to 8% is Moderate, and over 8% is Volatile.
Worked example (rates are for illustration only): suppose one US dollar buys 0.90 euros on your start date and 0.95 euros on your end date. The change is (0.95 − 0.90) ÷ 0.90 × 100 = 5.56%. That falls in the Moderate range. Because the number went up, one dollar buys more euros than before, so the dollar strengthened against the euro over that period. If the rate had dropped from 0.90 to 0.87, the change would be about −3.3%, also Moderate, in the opposite direction.
What This Score Does and Does Not Show
The score compares only two moments: the start date and the end date. It does not show what happened in between. A currency pair can swing widely during a period and finish close to where it started, which would still read as Stable. It also cannot predict what will happen next. Treat it as a quick way to see how much a rate has drifted, not as a forecast.
When Rate Swings Matter
- Travel planning: A move of several percent can noticeably change what a trip budget buys.
- Freelancers and small businesses: If you invoice in one currency and pay costs in another, a swing changes your real earnings.
- Sending money abroad: Family support, tuition, and overseas bills can cost noticeably more or less depending on timing.
- Shopping from overseas: A price that looked fair last month may not be after a large swing.
A helpful habit is to run the same pair over several windows, such as the last 30 days, 6 months, and a year. A pair that looks calm over a month but volatile over a year tells you something different than one that is steady across all of them.
Did You Know?
- Major currency pairs like USD/EUR typically move only a few percent over several months during calm periods, but can swing much more during economic or political shocks.
- Currency volatility tends to increase around major central bank announcements, elections, and geopolitical events.
Frequently Asked Questions
What counts as a big swing?
This tool uses rough thresholds (under 3% Stable, 3-8% Moderate, over 8% Volatile) as a general guide, not a precise financial metric.
Can I check any date range?
Most providers have data going back several years for major currencies; very old or very obscure currency pairs may have gaps.
Does a positive change mean the first currency got stronger?
Yes. The rate shows how much of the second currency one unit of the first currency buys. If that number rises, the first currency buys more, meaning it strengthened against the second. If it falls, it weakened.
Can I use this to decide when to exchange money?
It can show you how a rate has behaved, but past movement does not predict future movement. For decisions involving large amounts, talk with a qualified financial professional. This tool is for general information only.
Why did I get no data for my dates?
Rates are typically published for business days, so weekends and holidays can come back empty. Try a nearby weekday, or choose a slightly earlier end date if your date is very recent.