The Scenario
You're the finance controller at a manufacturing firm with suppliers in eight countries. Every month, AP submits an Excel workbook with outstanding invoices — 40 rows, each with a local currency amount and source currency code. Before you can close the books, every row needs a USD equivalent at the month-end rate. The CFO reviews the converted totals before the 15th.
Today is the 12th. The workbook landed in your inbox this morning with a note that says "needs USD conversion."
The bad version:
- Open Finage's forex rate endpoint, look up the rate for currency 1, multiply by the amount, type the result into column D.
- Repeat for 40 rows, switching source currency every few rows because the file is sorted by supplier, not currency.
- Realize on row 29 that you accidentally used today's spot rate instead of the month-end rate for a block of JPY invoices, and go back to fix them all.
A hand-keyed currency conversion with 40 rows and eight source currencies produces at least one error per cycle. At the amounts your firm invoices, that error eventually ends up in the audit trail.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your Excel workbook that reads the data and calls Finage on your behalf. It reads the source currency from column B, fetches the live Finage exchange rate for each unique pair, multiplies by the amount in column A, and writes the converted value into the column you specify — one operation, 40 rows.
For each row in my Excel sheet with a source currency and amount, fetch the live Finage exchange rate and write the USD equivalent into column D
What You Get
- Column D: USD-equivalent amount, calculated using the live Finage spot rate for each source currency
- Each unique source currency results in one Finage rate lookup, applied to all rows with that currency
- Rows with currency codes that Finage cannot resolve surface a note so nothing silently writes zero
What If the Data Is Not Quite Ready
You need month-end rates instead of today's live rate
For each row in my AP Invoices worksheet, read the amount from column A and the currency code from column B, fetch the Finage forex closing rate for the last day of the previous calendar month for each currency pair, and write the USD equivalent into column D
Some rows have blank currency codes because AP left them out
Before converting, check column B for any blank or invalid currency codes and write "MISSING CURRENCY" in column D for those rows, then convert all rows with valid codes using the live Finage rate and write the USD amount into column D
You want to see both the exchange rate used and the converted amount
Read amount and currency from columns A and B of my Excel workbook, fetch the live Finage forex rate for each unique source currency, write the rate applied in column C and the USD-converted amount in column D
You want to validate source amounts, convert at month-end rates, flag potential data entry errors, and produce a subtotal by currency in one pass
Check column A for any amounts that are negative or zero and note them in column E as "REVIEW NEEDED", then fetch the Finage month-end forex rate for each currency in column B, write the rate in column C and the USD equivalent in column D, and below the data table add a subtotal of USD amounts grouped by source currency
One prompt covers the validation, the historical rate pull, the conversion, and the summary.
Try It
Open an Excel workbook with your invoice amounts in column A and source currency codes in column B. Get the 7-day free trial of SheetXAI and ask it to convert every row to USD using Finage forex rates at the correct period. You can also ask it to load historical OHLCV data for the currency pairs you work with most, or return to the Finage hub for the complete overview.