CARTON · Ⓜ · USD/JPY

Simulated signal

Latest calculated index

Real currency Japanese yen

Fictional currency Monopoly money

1 JPY

Ⓜ

1 Ⓜ JPY 0.1515

Unofficial entertainment index. It is not a tradable exchange rate.

Cardboard Index · JPY / Ⓜ

How much is one Japanese yen worth in Monopoly money?

Based on data updated on September 4, 2026, one Japanese yen is worth approximately 6.6014 Ⓜ from a classic Monopoly edition.

The calculation uses 20,580 Ⓜ, its reference price in US dollars, and the exchange rate published by Federal Reserve · FRED.

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Historical series

The index in motion.

Choose a range: 1M, 3M and 1Y show daily values; 3Y summarizes each month.

The history contains 247 observations. The index moved from 6.9785 Ⓜ to 6.6014 Ⓜ per JPY, with a low of 6.2949 and a high of 7.2117.

At a glance

Previous value 6.4421 Ⓜ per JPY

7-day change +2.47 % Federal Reserve · FRED series

30-day change +1.95 % Federal Reserve · FRED series

Period low 6.2949 Ⓜ per JPY

Period high 7.2117 Ⓜ per JPY

How it works

One dollar price.
The Federal Reserve · FRED exchange rate.

We convert US$19.97 to JPY using Federal Reserve · FRED, then divide 20,580 Ⓜ by the result.

Ⓜ per JPY

20,580 Ⓜ US$ 19.97 × JPY 156.1100

current index · 6.6014

20,580 Ⓜ (Monopoly money) ÷ (US$ 19.97 × 156.1100 JPY/US$) = 6.6014 Ⓜ per JPY.

SOURCE

Fictional supply: 20,580 Ⓜ
Reference product: Monopoly Classic Game · B0DN37BBGD
Amazon price: US$ 19.97
Federal Reserve · FRED · JPY per US$1: 156.1100
Price in JPY: JPY 3,118

Limitations

The Amazon price is a reference and may change. It excludes shipping and taxes.

The Federal Reserve · FRED reference exchange rate may not match the price available to retail customers.

The price of the box also covers the board, tokens, cards, packaging, and distribution. The result should therefore be read as an entertainment index, not as a financial valuation.

Traceability

Two inputs, in plain sight.

In this historical snapshot, the product price remains fixed. Only the official Federal Reserve · FRED exchange-rate series changes over time.

Sources for the latest calculation
Source / input	Value	Date	Use
Amazon Monopoly Classic · ASIN B0DN37BBGD	US$ 19.97	Jul 23, 2026	IncludedFixed price
Board of Governors of the Federal Reserve System Japanese Yen to U.S. Dollar · DEXJPUS	JPY 156.1100 / US$ 1	Sep 04, 2026	IncludedHistory · 3 years

About the project

Real data.
Fake money.

cartonindex turns an absurd question into a serious exercise in methodology, traceability and visualization.

Both language versions use the same underlying data series, so changing language does not change the calculation.