USD/THB Exchange Rate History
A decade of US Dollar–Thai Baht movements, with the events that drove them.
USD/THB 10-year snapshot
USD/THB currently sits roughly 34% through its 10-year range — in the middle of the decade range.
The last decade in USD/THB
USD/THB ("Thai baht" in trading) has been one of Asia's most-resilient emerging-market currencies over the past decade. Over 2016–2026, USD/THB traded between 28 (early 2020 baht strength) and 37 (late 2022 USD peak). The Bank of Thailand (BoT) manages THB with active intervention but accepts long-term appreciation pressure from Thailand's persistent current-account surplus and tourism-driven dollar inflows.
Long-term trend
No strong secular direction — USD/THB has range-traded in a 28-37 band for most of the decade. The 1997 Asian Financial Crisis began with the Thai baht devaluation (July 2, 1997, when the BoT abandoned the USD peg) — modern USD/THB management is shaped by that historical trauma. Thailand maintains substantial FX reserves ($230B+) and the BoT actively intervenes during periods of excessive THB strength to protect tourism and export competitiveness.
Key events
THB at multi-year strength
A combination of strong Thai tourism (40+ million visitors), persistent current-account surplus, and global risk-on flows drove THB to multi-year highs. USD/THB fell to 31 — strongest THB since 2014.
USD/THB fell from 33 (December 2017) to 31 (April 2018).
COVID tourism collapse
COVID-era tourism collapse hit Thailand uniquely hard — tourism represents ~12% of Thai GDP. THB weakened against USD as the current-account surplus shrank dramatically.
USD/THB rose from 30 (early 2020) to 33 (March 2020), then settled to 30 by year-end.
USD/THB hits 38 — multi-year high
Aggressive Fed tightening combined with slow Thai tourism recovery drove USD/THB above 37. BoT rate hikes (eventual 2.50%) lagged the Fed (5.25-5.50%) — the widest US-Thai rate gap in years.
USD/THB peaked at 38 in October 2022, then settled below 35 by mid-2023.
BoT holds rates while tourism rebounds
Thailand tourism arrivals exceeded pre-COVID levels in 2024 (40+ million annual visitors), supporting THB. BoT held rates at 2.50% through most of 2024, accepting modest THB strength.
USD/THB held a 35-37 range through 2024.
BoT eases as inflation stays subdued
BoT cut rates 50bp in August 2025 to 2.00% as Thai inflation remained well below target. THB weakened modestly against USD on the rate-differential narrowing.
USD/THB rose from 34 (June 2025) to 36 (October 2025).
Practical takeaway
For travelers to Thailand, USD/THB's recent range (33-37) represents historically attractive levels for USD-funded trips — Thailand is currently 15-20% cheaper for foreign visitors than the 2018 era. Watch BoT meetings (six per year) and Thai tourism data for the primary scheduled volatility windows. Avoid converting at Thai airports — Thai bank ATMs and SuperRich-chain exchange centers in central Bangkok offer significantly better rates.
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Frequently asked questions
Why did the 1997 Asian Financial Crisis start with the Thai Baht?
On July 2, 1997, after months of speculative attacks and burning through over $30B in FX reserves defending the peg, the Bank of Thailand abandoned the USD peg. THB collapsed 50%+ against USD within weeks. The Thai crisis triggered contagion across Asia — South Korea, Indonesia, Malaysia, and the Philippines all faced currency crises within months. The 1997 trauma still shapes Thai monetary policy — the BoT maintains large reserves and actively manages THB to prevent any repeat.
How does Thai tourism affect THB?
Tourism represents ~12% of Thai GDP and is the largest single source of foreign exchange. Strong tourism years (2017-2019, 2024-2025) bring sustained USD/EUR/JPY inflows that strengthen THB. Weak tourism years (2020-2022 COVID era) weakened THB significantly. The BoT closely monitors tourism arrival data as a key currency-stability indicator.
When does the Bank of Thailand intervene in USD/THB?
BoT intervenes selectively to smooth volatility rather than defend specific levels. The 2020-2021 period saw heavy intervention to slow THB strength (tourism-recovery concern). 2022-2023 saw intervention to slow THB weakness (imported inflation concern). BoT reserves of $230B+ provide substantial intervention capacity, and verbal intervention through Governor speeches is common during stress episodes.
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