Exchange Rates

Overview

An FX rate API for live forex rates, in one call: pass two currency codes as parameters to receive the current conversion multiplier and an ISO 8601 timestamp showing when the rate refreshed. The response covers over 170 currencies. Each response names both currencies. Paid plans also return the inverse rate for reverse conversions without a second call, and how far the pair has moved over the last day, 7 days, 30 days and year, measured from the rate's date, so a historical lookup reports the moves leading up to that day. The last 30 daily closes are stored per currency, so paid plans also get the pair's 30-day high, low, average and volatility, and history=true returns the closes themselves. On live lookups, hourly=true adds the rate for each of the last 24 hours.

Live Test Exchange Rates Source →

Formula

One function covers the whole catalog: the first argument names the source, the next are its inputs, and the field after them says which single value lands in the cell. Formulas covers the grammar that applies to all of them.

=VERVE("exchangerate", A2, B2, "exchangeRate")

=VERVE.CALL("exchangerate", A2, B2, "exchangeRate")

A2 holds currency1, B2 holds currency2. Arguments go in that order — the same order as the table below.

With literal values

Nothing has to come from a cell — typed values work the same way.

=VERVE("exchangerate", "USD", "EUR", "exchangeRate")

=VERVE.CALL("exchangerate", "USD", "EUR", "exchangeRate")

Inputs

Required inputs are positional, in the order below, followed by the field. Everything else is passed as a "name", value pair after that — the same shape as SUMIFS. Premium inputs are accepted on every plan but only take effect on plans that include them.

Passing an option

=VERVE("exchangerate", A2, B2, "exchangeRate", "date", "2025-06-02")

=VERVE.CALL("exchangerate", A2, B2, "exchangeRate", "date", "2025-06-02")

What lands in your sheet

The field — the argument after the inputs — is what makes the formula resolve to one cell. Its value is a dot-path from the table below, so swapping it is how you pull a different value — one formula per column.

Seeing everything at once

Leave the field out and the formula returns the whole response instead: two columns, field name on the left and value on the right, spilling from the cell you typed in.

=VERVE("exchangerate", A2, B2)

=VERVE.CALL("exchangerate", A2, B2)

Response fields

Paths are relative to data. Each one is exactly what the field argument accepts, so swapping it is how you pull a different value into a cell. On a plan without a Premium field the cell reads #PREMIUM(field) rather than a value, so a locked field never looks like a real answer.

Filling a whole column

Both platforms make one batched call for a column rather than one request per cell, and both cost the same — 2 credits per row looked up. How you write it differs, because the two runtimes batch at different points.

=VERVE("exchangerate", A2:A100, B2:B100, "exchangeRate")

In Google Sheets, give the arguments ranges and the answers spill down from the cell you typed in. Custom functions there run synchronously and in isolation, so dragged cells cannot be coalesced — the range form is how a column becomes one call. The field is required here: a per-row two-column table has nowhere to spill. Use a full column per input (A2:A100, not A2) — a single-cell reference is read as row 1 only and the rest of the column comes back blank.

In Excel, type the formula once and fill down — no range form and none needed, because its runtime is asynchronous and the add-in coalesces the calls a fill produces into a single batched request. Do not hand VERVE.CALL a range: Excel flattens it into positional arguments, so A2:A100 arrives as a hundred separate arguments and the cell reads #ERR rather than filling.

Either way, column A holds your currency1 values and the answers land beside them, one row each, blank rows skipped.

When a cell doesn't fill

A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() will not catch it; test with LEFT(cell, 4) = "#ERR" instead. Error handling covers the rest.

Before the formula works

The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet does not leak it and a collaborator without access simply sees the last calculated values.

1. Install the add-in for Google Sheets or Excel.
2. Open the side panel and sign in, or paste a key from your dashboard.
3. Type the formula above into any cell.

Supported Currencies

170+ world currencies supported including fiat currencies, cryptocurrencies, and precious metals.

Use cases

Multi-Currency Checkout

Convert product catalog totals into a buyer's local currency at payment time so shoppers review exact prices before charging their cards.

Cross-Border Invoicing

When billing foreign clients, SaaS platforms convert base subscription fees into regional currencies to generate accurate invoices.

Travel Booking Conversion

Travel booking engines convert hotel and flight rates into the traveler's home currency so customers can compare international costs.

Remittance Payout Preview

To eliminate foreign exchange surprises, fintech apps display the converted payout amount before a user confirms an international wire.

Other ways to use Exchange Rates

Set up Exchange Rates on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.

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