Invoice converter

Paste dated amounts and get each converted at the reference rate published on that date, not today’s. One line per invoice, a total at the end, and every rate traceable to the central bank that published it.

Convert from and to

One invoice per line: date, then amount

Dates as 2024-03-04 or 4 March 2024. Anything after the amount is kept as a reference. Pasting two columns from a spreadsheet works. Slashed dates are refused, because 04/03/2024 is two different days depending on who wrote it.

Which rate this uses, and when that is the wrong one

Each line is converted at the reference rate the central bank published for that date, taken from the same series as the rest of the site and described on the methodology page. Dates with no publication — weekends, and each source’s own holidays — use the last rate published before them, and the row says so rather than quietly using it.

Tax authorities often require a specific rate, and it may not be this one. HMRC publishes its own monthly and yearly averages; the IRS accepts a yearly average or a spot rate; other revenue services set their own rules. This tool gives you the published central bank reference rate for each date, which is the right basis for invoicing, management accounts and records, and is a sound starting point for a return — but check what your revenue service asks for before filing. Nothing here is tax advice.