The Scenario
You are a finance manager at a multinational. Month-end close is Thursday. You have 500 rows of transactions in a Google Sheet. Column B has the transaction date, column C has the currency code (EUR, GBP, JPY, CAD, and others), column D has the amount in the local currency. Your reporting currency is USD. Every row needs a USD-equivalent column using the exchange rate on the actual transaction date.
The manual version:
- You look up the EUR/USD rate for January 3rd in a finance data site
- You type the rate into a lookup table, apply a VLOOKUP in column F for the EUR rows
- You repeat for GBP/USD on January 3rd, January 4th, January 5th
- You realize the JPY rows have fifteen different transaction dates each with a different rate
- By row fifty you are converting currencies by memory and the close is in two days.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your spreadsheet that reads each row, looks up the right FX rate from Alpha Vantage for the right date and currency pair, and writes the USD equivalent without a lookup table.
Open the SheetXAI sidebar and type:
For each row in this transactions sheet, look up the daily closing FX rate from Alpha Vantage for the currency pair in column C on the date in column B and write the USD equivalent amount in column F. Use USD as the base currency.
SheetXAI reads all 500 rows, identifies the unique currency-date combinations, fetches the appropriate FX rates from Alpha Vantage, calculates the USD equivalent for each row, and writes the results into column F.
What You Get
Column F populated for all 500 rows with the USD equivalent on the transaction date:
- Each row uses the actual historical daily closing rate, not an average or estimate
- Rates are sourced from Alpha Vantage's daily FX endpoint for each currency pair
- Rows with the same currency and date share the same rate fetch, so the process is efficient
The rate is pinned to the transaction date. A January 3rd GBP transaction gets the January 3rd rate, not today's rate. Your close numbers reconcile.
Need a rate source column for the audit trail? Add "write the rate used into column G alongside the USD equivalent" to the prompt.
What If the Data Is Not Quite Ready
Multi-currency transaction sheets have their own class of problems. SheetXAI handles them inline.
When the currency codes are inconsistent
Some rows say "EUR," others say "Euro," others say "€." Alpha Vantage expects the ISO 4217 code.
Before fetching FX rates, normalize the currency codes in column C to ISO 4217 three-letter codes (EUR, GBP, JPY, CAD, etc.). Replace any full names or symbols with the correct code. Then fetch the historical FX rate for each row using the corrected column C and write USD equivalents into column F.
When some rows already have a USD equivalent filled in
You ran a partial conversion last week and want to top up the remaining rows without overwriting the ones that are already done.
Only process rows where column F is blank. For each blank row, look up the daily closing FX rate from Alpha Vantage for the currency in column C on the date in column B and write the USD equivalent into column F. Leave existing values in column F untouched.
When you want a separate FX reference table for the audit file
Your auditors want a separate sheet showing every unique currency-date pair and the rate used, not just the converted values in column F.
After writing USD equivalents into column F for all 500 rows, create a new sheet called "FX Rates Used" listing every unique currency-date combination from the transaction data and the closing rate fetched from Alpha Vantage for each.
When you need the full close package in one pass
Close is tomorrow morning. You need the USD equivalents, a summary totals table by currency, an FX rate reference sheet, and a flag on any row where the transaction-date rate deviates more than 5% from today's rate (a potential hedging signal).
For each row in the transactions sheet, fetch the daily closing FX rate from Alpha Vantage for the currency in column C on the date in column B and write the USD equivalent into column F. Write the rate into column G. Then create a "Totals" sheet with total USD equivalent grouped by currency and by month. Create an "FX Rates Used" sheet with all unique currency-date pairs and their rates. Finally, in column H of the main sheet, flag any row where the transaction-date rate differs from today's rate by more than 5% with "RATE MOVED."
The pattern: the currency lookup, the conversion, the audit table, and the flag all happen before you open a second tab.
Try It
Get the 7-day free trial of SheetXAI and open any multi-currency transaction sheet, then ask it to look up historical FX rates from Alpha Vantage and write the USD equivalents. The Alpha Vantage integration is included in every SheetXAI plan. For related workflows, see how to build a commodity price comparison table or the Alpha Vantage in Google Sheets overview.