Currency calculator - currency converter
Convert euros and other currencies using indicative exchange rates.
Indicative rates (as of 2026-06). Check the exact rate with your bank.
Approximate calculation. The exact amount is confirmed by the Social Insurance Board or the Tax and Customs Board - check the official source.
Last updated: 2026-06-03
Converting currencies
Choose the source and target currency and enter an amount. Rates are quoted against the euro and are indicative - the actual exchange rate depends on the bank and changes daily.
How it is calculated
Formula
amount in the target currency = amount × (target rate ÷ source rate). Rates come from the European Central Bank and change daily.
Example
100 € × rate 1.08 → 108 USD (at a rate of 1.08).
What the ECB reference rate actually means
The European Central Bank rate shows how many units of a foreign currency one euro buys, for example 1 EUR = 1.08 USD. It is an informational mid-rate: the central bank does not buy or sell currency to anyone at that rate. Banks, card schemes and exchange offices use their own rates, shifted to one side of the mid-rate or the other.
When opened, the calculator loads fresh ECB rates and shows their date. If the connection fails, it falls back to stored indicative rates and says so. The ECB does not publish the Ukrainian hryvnia (UAH), so for that currency the calculator always uses the stored indicative rate.
Worked examples: direct, reverse and cross rates
The examples use the calculator's stored indicative rates (USD 1.08, GBP 0.85, SEK 11.3, NOK 11.5 per euro). Today's rates will differ, but the method stays the same.
Euros to a foreign currency: 250 EUR × 11.3 = 2825 SEK. When converting from euros, you simply multiply by the rate.
Foreign currency to euros: 108 USD ÷ 1.08 = 100 EUR. Here you divide, because the rate is quoted as foreign units per one euro.
Between two non-euro currencies the calculation goes through the euro: 1000 SEK ÷ 11.3 = 88.4956 EUR, then 88.4956 × 11.5 = 1017.70 NOK. Do not round the intermediate step: multiplying a rounded 88.50 euros would give 1017.75 NOK. Likewise 50 GBP ÷ 0.85 × 1.08 = 63.53 USD.
Rounding and small amounts
The result is rounded to two decimals. Enter 1 USD and you will see 0.93 EUR, although the exact value is 0.9259. To see the rate more precisely, enter 1000 or 10,000: 1000 USD gives 925.93 EUR, which shows the four-digit rate at a glance.
Japanese yen (JPY) amounts are large because one euro buys more than a hundred yen. The rounding error there is negligible, but converting a small amount back can lose a cent.
Why your bank and card payments give a different amount
A bank or exchange office works with two rates: one for selling currency to you and one for buying it back. Either way you receive less than the mid-rate suggests. If you swap euros for dollars and back again at the end of a trip, you pay that gap twice.
A card payment in a foreign currency is converted at the card scheme's or bank's rate, and depending on your agreement a fee may be added. The conversion may happen on the day the transaction is processed, which is not always the day of purchase.
Abroad, a payment terminal or ATM often offers to charge you in euros straight away. In that case the merchant's or ATM operator's rate applies, not your bank's. Before accepting, compare the euro amount on the terminal with the calculator's result.
How to check the real cost yourself
After a purchase you can work out how far your rate was from the mid-rate. Suppose you paid 100 USD for something and your bank statement shows 93.50 €. At that day's mid-rate of 1.08 the amount would have been 100 ÷ 1.08 = 92.59 €.
- Difference in euros: 93.50 - 92.59 = 0.91 €.
- Difference in percent: 93.50 ÷ 92.59 = 1.0098, so about 0.98 % more expensive.
- Your effective rate: 100 ÷ 93.50 = 1.0695 USD per euro.
- Always compare with the ECB rate for the same day, because rates change every working day and a move over a couple of days can exceed the bank's margin.
Frequently asked questions
Where do the exchange rates come from?+
The rates come from the European Central Bank's published daily rates and update every day.
Does the calculator include exchange fees?+
No. It shows the market rate; banks and exchange offices often add their own fee.
Where do the exchange rates come from?+
The calculator uses European Central Bank (ECB) reference rates, updated on working days. If a fresh rate is unavailable, the last known rate is used and its date is shown.
Do banks and exchange offices use these rates?+
No - the ECB reference rate is a market mid-rate. Banks and exchanges add their margin, so actual buy/sell rates differ somewhat.
How often do the rates update?+
The ECB publishes reference rates every working day around 17:15 CET. On weekends and holidays the last working day rate applies.
Is the calculator suitable for accounting?+
Estonian accounting uses ECB daily rates, so it works as a guide. For official records, verify the specific day rate on the ECB or Eesti Pank website.