What the converter is for
You have a bill in the currency on the table and a card in another currency. The page converts that bill at a published mid-market rate. If you choose Convert then tip, it then adds a percent and shows the total in the home currency.
Your browser requests the open ExchangeRate-API USD table. No key is sent, and the amount you type is not part of the request. If that address fails, the page tries Frankfurter and says so. The status line names the source. ExchangeRate-API's open table has one update time for the whole list, printed as "as of." Frankfurter dates each currency, and those dates are not always the same day, so the line names the date on the currencies you picked.
TipSlice does not add a foreign-transaction fee or a cash-desk commission. The result uses the named rate, rounded to the home currency's usual minor units. Yen land on whole yen. Dollar lines stop at cents. With a tip, the bill line plus the tip line equals the total.
Convert, then add the tip
Enter the local amount, set From to the bill's currency and To to the currency you want, and pick a percent. The page converts the bill, takes that percent of the converted amount, and adds them. A percent is a ratio, so 10% before the conversion and 10% after it match when one rate covers the whole check. A flat cover charge is not a percent. Add it to the amount, or leave it out, before you convert.
Check the rounding against a made-up rate that will not drift. If 1 euro equals 1.12 dollars, a 48 euro bill is 53.76 dollars. Ten percent is 5.376 dollars, which rounds to 5.38, and the total is 59.14 dollars. The button opens 48 euros at 10% on today's table, not at 1.12. Tick Use a rate I type and enter 1.12 when you want that illustration exactly.
If you already know the city, Travel Tipper fills a sourced U.S. sales-tax rate or the country tipping note before it does this conversion. Zero percent is a real setting. France's DGCCRF says displayed prices include service and that a tip cannot be demanded, so 0% only translates the check. The travel guide sets that rule beside Canada, Britain, Germany, Japan, and Australia. A U.S. sit-down meal uses the restaurant guide and the tip calculator instead of this page.
What this rate leaves out
The downloaded figure is a mid-market quote with no markup on it. It is not your card statement, and it is not the European Central Bank's euro reference rate. The card network converts the charge when it posts, and the issuer may add a foreign-transaction fee from the card agreement. Some cards charge none. If your banking app already shows the rate it will use, type that rate. The result is labeled as yours.
A terminal may offer to charge you in your home currency. That offer is dynamic currency conversion, quoted in the next section. Compare the terminal's home-currency total with the total here before you accept it. A typed rate is also how you use the number on an airport cash receipt. The page will not blend that number with the downloaded table.
Pay in the local currency, or let the terminal convert
A card terminal or an ATM can offer to bill your home currency instead of the currency on the check. Visa's dynamic currency conversion page says that home-currency option includes an exchange rate and additional fees. The same page says an ATM can hand you local cash and still bill your home currency.
Visa's travel page answers whether to pay in the local currency or convert to US dollars. A foreign merchant may offer to convert the bill to US dollars. Seeing the amount in your home currency is convenient, and the conversion usually includes a markup. To avoid the markup, decline the conversion and pay in the local currency. If you chose the local currency and the merchant still charged a different currency, Visa says to contact your bank and contest the charge.
That DCC page also says what the screen and the receipt have to show: the purchase or withdrawal in the local currency and in the cardholder's currency, both currency symbols, the exchange rate, and any additional fees or markup. The merchant or ATM should let you accept or decline, and must not choose for you. It should not use language or procedures, such as a different font size or color, to influence the choice. If those details are missing, or you feel pressured, Visa says to decline and tell your card issuer. Accepting or declining does not change whether the card can make the purchase or the withdrawal. After you have looked at the cost, Visa says the choice is yours.
Mastercard's 2025 Dynamic Currency Conversion Performance Guide, the merchant version, says DCC is not a Mastercard product. An acquirer, a merchant, or an ATM owner offers it so you can finish the charge in the local currency or in your card's billing currency. Local currency is converted at the exchange rate from your card issuer. The billing currency is debited at the exchange rate the acquirer offers. If you do not explicitly choose the billing currency, the guide says the transaction must be processed in the local currency. Automatic conversion, including a merchant choosing it for you, is not permitted.
Before you pick, the same guide says you must be told that you can choose the currency, the amount in the local currency, the amount in the billing currency, the conversion rate if you pick the billing currency, and any other fee for choosing DCC, such as a commission. The offer has to be clear and neutral. No currency may be the default, you must not be steered, and your choice has to be honored. A refund has to use the currency of the original transaction. The guide describes a markup as a commercial agreement between the acquirer and the merchant or ATM owner. It says that markup does not necessarily reflect a comparison with market exchange rates, and that local rules in some places require a comparison with a central-bank rate.
Mastercard's currency converter says its rates do not apply when the merchant or the ATM operator converts the transaction. That usually happens when you select your card's currency instead of the currency of the merchant or the ATM.
In the European Union, the Commission's Your Europe page addresses a business that offers card payment in the customer's own currency rather than the currency of the country or the website. It says the business must, at the time of purchase, state all charges for that conversion service, and should express those charges as a percentage markup over the latest euro foreign-exchange reference rates from the European Central Bank. The hotel example on that page says guests with a foreign card can choose their home currency, the bill should be converted using the ECB rate, and the guest must be told the percentage markup on top.
The total on this page is the mid-market figure from the named table, or a rate you typed. It is a comparison number, not the terminal's offer. Read both amounts on the screen before you press one.
When the rate does not load
If both tables fail, the form says so and leaves the result blank. It does not substitute a rate baked into the page. Retry asks again. Use saved rates applies a table this browser stored earlier and keeps that table's time on the status line. Saved rates can be stale. Typing a rate works with no network. Clearing site data for tipslice.com deletes the saved table. The privacy policy says what the request contains.
Currency converter FAQ
Does TipSlice upload the amount I convert?
No. The amount, the currencies, and the tip stay in the page. Your browser requests a public rate table from ExchangeRate-API, or from Frankfurter if that first request fails. The request does not include the numbers you typed. A table that loaded can be saved in this browser so a later visit can reuse it. The privacy policy describes that saved table.
Why is my card's dollar total different?
This page uses a mid-market rate from the named public table, or a rate you type. A card network converts the charge when it posts, and the issuer may add a foreign-transaction fee from your card agreement. A terminal that offers to charge you in your home currency is dynamic currency conversion, a different rate from this page. Compare the terminal's home-currency total with the total here before you accept it.
Should I let the terminal charge my home currency?
Visa's travel page says a merchant's offer to convert the bill into US dollars usually includes a markup, and that paying in the local currency avoids that markup. Visa's dynamic currency conversion page says the home-currency option includes an exchange rate and additional fees, and that you can decline. Mastercard's 2025 merchant guide says the local currency uses your card issuer's rate, and your card's billing currency uses the acquirer's rate. If the screen hides the rate or the markup, decline it.
Should I add the tip before or after converting?
A percent is a ratio, so 10% of the local bill and 10% of the converted bill are the same total when one rate is used for the whole check. Convert then tip does that in one step: it converts the bill, takes the percent of the converted amount, and adds them. If the extra charge is a flat fee in one currency rather than a percent, add that fee to the amount yourself and use Convert.
What if the rates do not load?
The page says so and does not invent a rate. Retry tries ExchangeRate-API and then Frankfurter again. If this browser saved a table earlier, you can use that saved table, and the status line keeps the saved time. You can also type the rate from your card app or from a cash receipt. A typed rate is labeled as yours and is not mixed with the live table.