# USD to Yen converter

Converts US dollar (USD) to Japanese yen (JPY) and back at the ECB euro reference rates of 28 September 2026, or at your own rate.

- Page: https://www.acalculator.org/convert/usd-to-yen
- JSON spec: https://www.acalculator.org/convert/usd-to-yen.json
- Version: 5e250c204d49

## Default answer

Example with the default inputs (US dollar (USD) 1, Rate: JPY per 1 USD 156.882): 1 USD = 156.88 JPY, at 1 USD = 156.882 JPY. The ECB reference rates of 28 September 2026 give 1 USD = 156.882 JPY.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| amount | US dollar (USD) | The amount in USD. |
| result | Japanese yen (JPY) | The same amount in JPY. |
| rate | Rate: JPY per 1 USD | How many JPY one USD buys. It starts at the ECB rate of 28 September 2026; type your bank's rate to use it. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| amount | US dollar (USD) | The amount in USD. |
| result | Japanese yen (JPY) | The amount in JPY. |
| rate | Rate: JPY per 1 USD | How many JPY one USD buys in this answer. |
| inverse | Inverse: USD per 1 JPY | How many USD one JPY buys. |

## Method

JPY = USD × rate. The ECB rate is a cross rate: (JPY per euro) ÷ (USD per euro), to 6 significant figures.

## Assumptions

- The default rate, 1 USD = 156.882 JPY, is worked out by this site from the ECB euro reference rates of 28 September 2026: 178.5 JPY per euro ÷ 1.1378 USD per euro, rounded to 6 significant figures. The ECB does not publish rates between two non-euro currencies.
- The ECB publishes its reference rates for information purposes only, not for transactions. Banks and cards add a margin or a fee; type their rate to see what you would get.
- Amounts are rounded to 2 decimal places, without trailing zeros (24.4 means 24.40), and rates show up to 7 significant figures; the calculation keeps full precision.

## Worked examples

1. amount = 100, rate = 156.9 gives result = 15,690. Source: hand calculation: amount × rate, at the ECB rate of 28 September 2026 for USD to JPY (156.882) rounded to 4 significant figures.
2. result = 100, rate = 156.9 gives amount = 0.637349. Source: hand calculation: amount × rate, at the ECB rate of 28 September 2026 for USD to JPY (156.882) rounded to 4 significant figures.
3. amount = 100, result = 15,690 gives rate = 156.9. Source: hand calculation: rate = result ÷ amount.

## FAQ

### How much is 1 USD in JPY?

At the ECB euro reference rates of 28 September 2026, 1 USD = 156.882 JPY, and 1 JPY = 0.00637423 USD.

### Where does the USD to JPY rate come from?

The ECB quotes every currency against the euro only. On 28 September 2026, 1 euro bought 1.1378 USD and 178.5 JPY, so 1 USD = 178.5 ÷ 1.1378 = 156.882 JPY. This cross rate is worked out by this site; the ECB does not publish it.

### Can I use this rate at my bank?

Not exactly. The ECB publishes its reference rates for information purposes only and strongly discourages their use for transactions. Banks, cards, and exchange offices add a margin or a fee. Type the rate they offer into the rate box to see what you would receive.

### How often does the rate change?

The ECB sets one reference rate per currency on each TARGET working day, at about 16:00 CET. This page shows the rates of 28 September 2026; they change when the site is rebuilt with a newer copy.

## Sources

- European Central Bank, euro foreign exchange reference rates of 28 September 2026. https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml
- European Central Bank, "Euro foreign exchange reference rates": published at about 16:00 CET on TARGET working days, for information purposes only. https://www.ecb.europa.eu/stats/policy_and_exchange_rates/euro_reference_exchange_rates/html/index.en.html
- European Central Bank, disclaimer and copyright: free reuse with the ECB cited as the source; changes to the data must be stated. https://www.ecb.europa.eu/services/using-our-site/disclaimer/html/index.en.html