Jenee

Currency Converter

Convert major currencies in real time using up-to-date exchange rates. Choose from a comprehensive list with locale-formatted output.

Updated: - Using API: -
Symbols
1 JPY → USD
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How to Use

  1. STEP 1
    Enter amount and select source/target currencies (Default: JPY → USD).
  2. STEP 2
    Click Convert to show results based on the latest rates. You can swap currencies.
  3. STEP 3
    Symbols list is fetched automatically. If it fails, only major currencies are shown.
  • Rates are provided by free APIs and may differ from actual transaction rates.
  • Cache is stored in your browser temporarily (TTL: 20 minutes).
  • For trading or tax purposes, verify with official rates.

Tips

1

Intl.NumberFormat helps render locale-aware currency formatting.

2

Exchange rates change 24/7. Double-check important conversions with official sources.

3

Many sites show a mid-market (indicative) rate. Actual cash/retail rates include bid/ask spreads and fees, so your effective rate differs.

4

On weekends/holidays, updates slow and Monday openings may show price gaps. Always check the timestamp.

5

Cross rates can be approximated via USD: A→B ≈ A→USD × USD→B. Example: JPY→EUR ≈ (JPY→USD) × (USD→EUR).

6

Decimal digits vary by currency (JPY has 0, KWD often 3). Choose rounding (half-up/ceil/floor) appropriate for your use case.

7

Mind the base/quote order: USD/JPY=150 means 1 USD = 150 JPY (left is base, right is quote).

8

Providers differ in sources and interpolation; small discrepancies across sites are normal. For critical use, compare multiple sources.

FAQ

  • QUESTION 1

    How often are rates updated?

    Depends on the API provider. Free APIs may have delays of minutes to hours.

  • QUESTION 2

    Do I need an API key?

    exchangerate.host and Frankfurter.app do not require API keys.

  • QUESTION 3

    How many decimal places?

    Most major currencies use 2 decimals; some use 3-6. The UI rounds appropriately.

  • QUESTION 4

    Why do different sites show different rates?

    They use different data sources, update intervals, and may display mid rates vs. tradable bid/ask. Real execution rates include spreads and fees.

  • QUESTION 5

    What happens to rates on weekends/holidays?

    Markets are mostly closed, so updates slow. You may see gaps on Monday. Check the timestamp and refresh after open.

  • QUESTION 6

    How can I refresh cached data immediately?

    The tool caches for 20 minutes in localStorage. Reload the page or clear site data (localStorage) to force fresh retrieval.

  • QUESTION 7

    Why does reverse conversion slightly differ?

    Rounding, display precision, and fetch timing can cause tiny mismatches. For critical tasks, compute with more significant digits.

  • QUESTION 8

    Can you add a currency that's missing?

    Yes. Please send a request from the Contact page. We'll prioritize widely requested currencies.

Feedback (Contact)