Formula and calculation method
Converted amount = amount × (target rate ÷ source rate). Inverse rate = 1 ÷ rate.
Each currency is stored as units per one US dollar. Dividing the target rate by the source rate gives the exchange rate for any pair, so the same table converts every combination without a separate rate for each one.
How to use currency converter
- Set Amount. The example below uses 100.
- Set From currency to the money you are starting with. The example uses USD.
- Set To currency to the money you want. The example uses INR.
- Select Calculate, or use the swap button to reverse the pair. Copy, print or download your own result if you need a record.
Worked example
Example inputs
- Amount
- 100
- From currency
- USD
- To currency
- INR
- Amount in INR
- 9,673
- 1 USD in INR
- 96.73
- 1 INR in USD
- 0.0103381
About the exchange rates
Most rates are European Central Bank reference rates, published once per working day. The UAE dirham, Saudi riyal, Qatari riyal, Bahraini dinar and Omani rial use their official fixed pegs to the US dollar. These are mid-market reference rates, not live quotes and not the rate a bank, card or transfer service will give you. The date shown in your result tells you which table was used.
Inputs and results explained
Currency Converter takes 3 inputs. Fill each one using the same units and conventions, then select Calculate.
- Amount: a number of 0 or more. The worked example uses 100.
- From currency: choose one of 35 options, such as USD — US Dollar, EUR — Euro, GBP — British Pound and others.
- To currency: choose one of 35 options, such as USD — US Dollar, EUR — Euro, GBP — British Pound and others.
The result panel reports Amount in INR, 1 USD in INR and 1 INR in USD, so you can see the whole outcome rather than a single figure.
Factors affecting your result
Fees and spreads usually make the rate you receive worse than the reference rate. Weekends and holidays reuse the last published rates, and large moves between publication and your transaction are not reflected. For a real transfer, compare the final amount received, not only the quoted rate.
Changing amount changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same currencies and date. A precise arithmetic result does not make an uncertain assumption precise.
Frequently asked questions
How does the currency converter work?
It converts through one common base. Every currency is stored as units per US dollar, so converted amount = amount × (target rate ÷ source rate). The inverse rate is the reciprocal.
Where do the exchange rates come from?
Most rates are European Central Bank reference rates, published each working day around 16:00 CET. The UAE dirham, Saudi riyal, Qatari riyal, Bahraini dinar and Omani rial use their official fixed pegs to the US dollar. The date shown in your result tells you which day's table was used.
Are these live exchange rates?
No. They are daily reference rates, not real-time market quotes. On weekends and bank holidays the last working-day rates apply, so a result can differ from a live market price.
Why does my bank or card give a different rate?
Banks, card networks and money-transfer services add a spread or fee to the mid-market rate. This tool shows the reference rate without fees, so use it to compare offers rather than to predict what you will receive.
Are my currency converter inputs uploaded?
No. The calculation runs in this browser. The converter loads a small public rates file from this site, but your amount and chosen currencies are not sent to a calculation server or stored by this website. Shared links do not include entered values.
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