What this calculator does
Model foreign-currency revenue or cost exposures, apply FX shocks, and compute break-even and target-margin exchange rates in home currency terms.
為替リスク
為替・通貨リスク計算機
為替が動いたときの利益・マージンと損益分岐レートを可視化します。
1. Exposure
Rate convention: 1 unit of foreign currency = X units of home currency.
2. Rate
ECB reference rate
1 USD = — JPY
Reference date: —
Source: European Central Bank reference exchange rates. Reference data only; actual bank, card, marketplace or settlement rates may differ.
3. Economics
4. Break-even & target rate
Rate source: unavailable
- Effective rate used
- —
- Profit at base rate
- —
- Margin at base rate
- —
- Break-even FX rate
- 120
- Rate for target margin
- —
A 5% FX move does not necessarily equal a 5% profit change — compare profit delta in the scenario table.
No FX rate available. Enter a manual or contract rate to run scenarios.
5. Risk scenarios
| FX shock | FX rate | Converted amount | Profit | Margin | Profit Δ | Margin Δ |
|---|
6. Share & related tools
情報提供目的の計画ツールです。投資助言・取引推奨ではありません。参照レートは実勢の銀行/カード/決済レートと異なる場合があります。
Method & data
Optional ECB euro foreign exchange reference rates are normalized to 1 foreign = X home via EUR cross rates. Manual or contract rates override references. Fee/spread is an explicit percentage adjustment to the rate.
FAQ
Is the ECB rate my bank rate?
No. ECB publishes reference rates for information. Banks and platforms apply their own spreads.
What if ECB data is unavailable?
The calculator stays usable with a manual or contract FX rate.
Does a 5% FX move cut profit by 5%?
Not necessarily. Profit impact depends on exposure size, other home costs/revenue, and margin structure.