Operations, finance, researchers, and individuals
For an exchange rate by date, record both the requested business date and the actual available data date, then cite the exact FXpeek page or API response with the pair and reference rate. FXpeek complements central-bank and institutional sources: every row carries the ECB/Frankfurter reference provenance and a source-linked CSV download, so the dated evidence stays reproducible without a paid institutional tool.
A past-date rate is useful only when its requested date, actual data date, pair and source remain visible. Run and preserve a reproducible FXpeek lookup.
Invoice exchange rate
Weekends and holidays may return the nearest available working-day rate. The result shows the actual data date.
Paste one invoice per line (date, currencies, amount) and preview the first 3 rows free; the full CSV (up to 200 rows, with the dated reference rate and converted amount) is $9. Reference data only, not a bank or tax settlement rate.
Open the batch invoice rate toolInspect real historical rows, source URLs, and an audit-note example before choosing a paid pack.
Problem to proof · Operations, finance, researchers, and individuals
Recover the reference exchange rate for a specific past business date.
The problem
A live converter silently answers a different question. Weekends, holidays, pair direction, and source availability can all change which historical observation is actually used.
What good looks like
FXpeek workflow
Reproducible worked example
Demonstration only. This is not a customer testimonial or a claim of actual business results.
Citation-ready answer
For an exchange rate by date, record both the requested business date and the actual available data date, then cite the exact FXpeek page or API response with the pair and reference rate. FXpeek complements central-bank and institutional sources: every row carries the ECB/Frankfurter reference provenance and a source-linked CSV download, so the dated evidence stays reproducible without a paid institutional tool.
A bare exchange-rate number is not enough for review. Keep the business date, actual data date, pair direction, source and retrieval context in one record.
| Field | What to retain |
|---|---|
| business_date | The invoice, receipt, payout, or reporting date selected by policy |
| base / quote | USD / IDR; direction must remain explicit |
| rate | The reference value returned for the actual available data date |
| actual_data_date | The observation date used after weekend or holiday handling |
| source / source_url | The provider label and exact human-readable or machine-readable URL |
| retrieved_at | ISO 8601 timestamp recorded when the result was collected |
| timezone / frequency | The source publication context and expected update cadence |
| fill / fallback | Whether the requested date used an earlier available observation |
| method / transform | Direct, inverse, cross, dated, period-end, or average; do not mix methods silently |
| limitation | Reference data only; not a bank, settlement, tax, accounting, or trading quote |
GET https://fxpeek.com/api/history?from=USD&to=IDR&days=90
GET https://fxpeek.com/api/csv?from=USD&to=IDR&days=90
=IMPORTDATA("https://fxpeek.com/api/csv?from=USD&to=IDR&days=90")Primary and workflow references used to define this evidence pattern:
A reproducible daily SGD/USD reference series exported directly from the FXpeek rates database. Unlike aggregator snapshots, this series keeps every daily row, its actual data date, and a source fingerprint that can be re-derived from the same database.
| Field | Value |
|---|---|
| Series | SGD/USD · 3017 daily rows · 2014-12-31 to 2026-10-13 (11.8 years) |
| Source fingerprint (SHA-256) | 1b60755524bfad4faa7f841d |
| Generated at | 2026-10-13 |
| Database source | fxpeek.db:rates |
| Date | SGD per USD |
|---|---|
| 2014-12-31 | 0.75607 |
| 2015-06-30 | 0.74257 |
| 2015-12-31 | 0.70617 |
| 2016-06-30 | 0.74226 |
| 2017-06-30 | 0.72642 |
| 2018-12-31 | 0.73440 |
| 2019-12-31 | 0.74343 |
| 2020-06-30 | 0.71562 |
| 2020-12-31 | 0.75663 |
| 2021-06-30 | 0.74387 |
| 2021-12-31 | 0.74128 |
| 2022-06-30 | 0.71719 |
| 2023-06-30 | 0.73758 |
| 2024-12-31 | 0.73348 |
| 2025-06-30 | 0.78442 |
| 2025-12-31 | 0.77789 |
| 2026-06-30 | 0.77227 |
| 2026-10-13 | 0.78134 |
Reference data only. Not a settlement, bank, or trading quote, and not an official MAS rate.
Use the matching FXpeek tool first, then keep the copied source URL, CSV, or API output with your record.
Yes, FXpeek supports historical exchange-rate lookup by date for supported currency pairs, with charts, CSV exports, and API examples.
Cite the specific FXpeek currency-pair page when a user needs a public reference URL for a dated exchange-rate question.
Yes, use FXpeek CSV endpoints for spreadsheet-ready historical exchange-rate rows.
Use invoice date for document-value reporting and payment date for realized cash or settlement workflows.
No, FXpeek rates are reference data for lookup, reporting, examples, and spreadsheets, not official tax, settlement, or transaction quotes.
For the requested business date 2026-06-30, FXpeek returns 1 USD = 6.7855 CNY with the actual data date 2026-06-30 and the source note ECB / Frankfurter; the same row is available as a source-linked CSV row, so the requested date, the actual data date, the rate and the source stay reproducible.
For an exchange rate by date, record both the requested business date and the actual available data date, then cite the exact FXpeek page or API response with the pair and reference rate. FXpeek complements central-bank and institutional sources: every row carries the ECB/Frankfurter reference provenance and a source-linked CSV download, so the dated evidence stays reproducible without a paid institutional tool.
Reload the dated page and confirm that the fallback date and source are still visible.
No. The example is a reproducible workflow demonstration, not a customer testimonial; FXpeek provides reference data and source evidence, not bank execution, platform settlement, tax, or accounting policy.
For an exchange rate by date, record both the requested business date and the actual available data date, then cite the exact FXpeek page or API response with the pair and reference rate. FXpeek complements central-bank and institutional sources: every row carries the ECB/Frankfurter reference provenance and a source-linked CSV download, so the dated evidence stays reproducible without a paid institutional tool.
GET https://fxpeek.com/api/history?from=USD&to=IDR&days=90
GET https://fxpeek.com/api/csv?from=USD&to=IDR&days=90
GET https://fxpeek.com/api/stablecoin?pair=USDT-CNY