| Date | Bid | Offer |
|---|---|---|
| Feb 28 2018 | R$ 4.4703 | R$ 4.4724 |
| Feb 27 2018 | R$ 4.4939 | R$ 4.4961 |
| Feb 26 2018 | R$ 4.5082 | R$ 4.5107 |
| Feb 23 2018 | R$ 4.5278 | R$ 4.5293 |
| Feb 22 2018 | R$ 4.5440 | R$ 4.5461 |
| Feb 21 2018 | R$ 4.5490 | R$ 4.5515 |
| Feb 20 2018 | R$ 4.5511 | R$ 4.5529 |
| Feb 19 2018 | R$ 4.5248 | R$ 4.5273 |
| Feb 16 2018 | R$ 4.5438 | R$ 4.5460 |
| Feb 15 2018 | R$ 4.5373 | R$ 4.5394 |
| Feb 14 2018 | R$ 4.5433 | R$ 4.5453 |
| Feb 09 2018 | R$ 4.5327 | R$ 4.5345 |
| Feb 08 2018 | R$ 4.5885 | R$ 4.5906 |
| Feb 07 2018 | R$ 4.5228 | R$ 4.5249 |
| Feb 06 2018 | R$ 4.5249 | R$ 4.5267 |
| Feb 05 2018 | R$ 4.5250 | R$ 4.5271 |
| Feb 02 2018 | R$ 4.5321 | R$ 4.5333 |
| Feb 01 2018 | R$ 4.5061 | R$ 4.5082 |
Source: Brazilian Central Bank
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Ptax is the main reference rate for the US Dollar in Brazil. It's published daily by the Brazilian Central Bank based on the quotes received from the major foreign exchange dealers in the Brazilian market. It's released by 1 PM (GMT-3) every business day.
Data available from Dec 05 1984 until Jan 28 2026