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This tool helps you convert any amount between major world currencies using historical exchange rates. Choose the currencies, input an amount, and select the specific date in the past you want to use.
Whether you're reviewing past investments, auditing old transactions, or just curious about how much your money was worth in the past, this tool makes it quick and simple.
Unlike real-time currency converters, this calculator is tailored for historical needs. It's especially useful for accountants, financial analysts and individuals tracking net worth over time.
An exchange rate is a price, and like any price it only exists at a moment in time. The rate between two currencies on 14 March 2019 is a fixed historical fact. It does not move, and it is not the same as today's rate.
Currency markets trade continuously, so a single day contains thousands of different rates. To make dates comparable, reference rates are published once per trading day. That published figure is what a historical conversion uses, and it is the figure auditors, accountants and tax authorities expect to see.
This is why converting an old transaction at today's rate is wrong. It reports a number that nobody ever paid or received.
Three rules cover almost every case.
If a date returns no result, one of these three rules is usually the reason.
You bought a fund in another currency four years ago, added to it twice, and sold part of it last year. To know what actually happened in your own currency, each of those events has to be converted at its own date. Converting the whole thing at one rate hides the currency result completely.
A card payment abroad, an invoice in a foreign currency, a transfer that looks wrong on a statement. Convert at the transaction date, compare against what you were charged, and the difference is the margin the bank applied.
Foreign income and foreign assets usually have to be reported in one currency at a defined date. Recording the rate you used, next to the date you used it, turns a later question into a one-line answer.
Gold, silver and platinum use currency codes (XAU, XAG, XPT) with one unit equal to one troy ounce. Converting 1 XAU to USD on a past date returns the gold price that day, which makes a metals position sit alongside everything else in one history.
What a sum was worth in another currency decades ago is a reasonable thing to wonder about, and the tool answers it as readily as it answers an audit question.
A single conversion answers a single question. The harder problem starts when you hold assets in several currencies and want one honest picture of how you are doing.
Consider a position bought for $10,000 when a dollar cost one euro. Today it is worth $11,000, and a dollar costs 0.90 euro. In dollars you gained ten percent. In euros the position is worth €9,900, so you are slightly down. Both statements are true. Only one of them is the currency you actually spend.
Doing this by hand means a conversion for every deposit, every withdrawal and every valuation, each at its own date. It is the part of a spreadsheet that quietly breaks first.
NetFiscus does it automatically. Each asset stays in its own currency, every cash flow converts at the rate from its own date, and your profit and loss and money-weighted return are reported in the currency you choose. The currency effect stays visible instead of being averaged away.
If you are working through this problem now, tracking investments across multiple currencies covers the approach in more depth.
Each conversion reports the converted amount and the rate that produced it. The rate is worth keeping, not just the amount. A stored rate can be checked later against any other source. A stored amount alone cannot.
Every conversion you run is added to the history table above, so a set of lookups for the same records stays together while you work. The history lives in your browser only. It is not sent anywhere, and clearing it removes it for good.
Pick the two currencies, enter the amount, and choose the date. The tool looks up the exchange rate published for that date and converts at that rate, not at today's rate.
Currency markets do not publish a rate on days they are closed. For those dates the last published rate before them applies. A Saturday conversion uses the Friday rate.
Coverage depends on the currency pair. Major pairs such as USD, EUR and GBP reach back decades. Currencies that were redenominated or replaced, including those absorbed by the euro, stop at the date they left circulation.
Yes. Precious metals use their ISO currency codes: XAU for gold, XAG for silver, XPT for platinum. One unit is one troy ounce, so converting 1 XAU returns the price of one ounce of gold on that date.
Banks and card networks add a margin to the market rate, and they settle on their own date, which is often a day or two after the transaction. This tool reports the market reference rate, so a gap of one to three percent against a bank figure is normal.
Check the rule that applies to you first. Many tax authorities require a specific source or an official yearly average rather than the market rate for a given day. This tool is accurate for the market rate, but it does not decide which rate your filing requires.
