The Scenario
You're the international finance lead at a services firm with clients in 12 countries. Every month you receive a revenue file from the billing team — 40 rows, each with an amount and a source currency. Before you can roll it into the consolidated P&L, every row needs a USD equivalent at the rate that applied on the last day of the period.
You've been doing this manually for eight months. A new hire is taking over next month and the handoff doc currently says "use XE.com and paste the rates in."
The bad version:
- Open Finage's forex rate endpoint, look up the rate for currency 1, multiply by the amount, enter the result in column C.
- Repeat for 40 rows, switching source currency every few rows because the billing data is sorted by client, not by currency.
- Realize on row 32 that you accidentally used today's rate for three rows that should have used end-of-month rate, and go back to fix them.
A hand-keyed currency conversion with 40 rows and 12 source currencies produces at least one error per month. At the scale your firm operates, that error eventually ends up in an executive report.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your Google Sheet 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 column C — one operation, 40 rows.
Read amount and currency code from columns A and B of my Google Sheet and use Finage to convert each to USD at today's rate, writing the converted amount into column C
What You Get
- Column C: 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 (not 40 separate calls)
- Rows with currency codes that Finage cannot resolve surface a note in column D so nothing silently writes zero
What If the Data Is Not Quite Ready
You need end-of-month rates instead of today's live rate
For each row in my Revenue sheet, 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 C
Some rows have blank currency codes because the billing team left them out
Before converting, check column B for any blank or invalid currency codes and write "MISSING CURRENCY" in column C for those rows, then convert all rows with valid codes using the live Finage rate and write the USD amount into column C
You want to see both the exchange rate used and the converted amount
Read amount and currency from columns A and B, 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 the source amounts, convert at end-of-month rates, flag anything that looks like a data entry error, 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 end-of-month 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 a Google Sheet with your billing 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 live Finage forex rates. 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.