When this tool helps
- Estimate the value of a purchase in another currency
- Compare amounts using one consistent reference snapshot
- Check a rough ECB-based conversion without a live API call
MONEY
Currency Converter
Convert currencies with a dated ECB reference-rate snapshot.
Runs locallyNothing is uploaded
PRACTICAL GUIDE
How to use Currency Converter
Last reviewed
Convert currencies with the dated European Central Bank reference-rate snapshot bundled into FroggoTools. The result is suitable for comparison and planning, not settlement or trading.
How to use it
- Enter the amount
- Choose source and target currencies
- Check the displayed reference-rate date
- Compare the estimate with your bank or payment provider before a transaction
Cross-rate conversion
- Input
- 100 units of currency A to currency B
- Result
- A target estimate derived through the shared EUR base
Using one base allows two non-EUR currencies to be compared consistently.
Formula: target amount = source amount / source rate versus EUR x target rate versus EUR
Limits and assumptions
- The snapshot is not a live market quote
- Banks and cards add spreads, fees and their own rates
- ECB reference rates are for information, not transaction execution
Frequently asked questions
Is this an ECB calculator?
It uses a dated snapshot of ECB reference rates and clearly shows the rate date.
Why does my bank show a different amount?
Providers can use a different timestamp, spread, fee or card-network rate.
Does the converter contact an exchange-rate API?
No. The validated rate snapshot is bundled with the site.