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Thai Baht (THB) to Old São Tomé Dobra (STD)

Convert Thai baht to old São Tomé dobras at the live mid-market rate. Reverse: STD to THB

The Old São Tomé Dobra is no longer in use

Old São Tomé Dobra (STD) was replaced by the São Tomé and Príncipe Dobra (STN) in 2018. For today’s money, convert THB to STN.

1 Thai Baht =

651.62 STD −0.41% today

1 THB = 651.62 STD · 1 STD = 0.00153464 THB

Mid-market rate, updated 03:38 UTC. Paid plans update as often as every 60 seconds. Get THB→STD rates via API

THB to STD over the last year

640.00660.00680.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
680.10
52-week low
638.23
52-week average
656.14
Change over the year
+0.57%

Conversion tables

THB to STD
THB STD
1 THB 651.62 STD
10 THB 6,516.20 STD
100 THB 65,161.97 STD
1,000 THB 651,619.67 STD
10,000 THB 6,516,196.71 STD
50,000 THB 32,580,983.54 STD
100,000 THB 65,161,967.09 STD
STD to THB
STD THB
1 STD 0.001535 THB
10 STD 0.01535 THB
100 STD 0.1535 THB
1,000 STD 1.53 THB
10,000 STD 15.35 THB
50,000 STD 76.73 THB
100,000 STD 153.46 THB

Get THB→STD rates via API

The live rate, the rate on any past day or a whole range, for STD and 170+ other currencies, as JSON. Free plan included. See the exchange rate API.

Get a free API key API documentation 
curl https://api.currencyapi.com/v3/latest \
  -G -d base_currency=THB -d currencies=STD \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=THB -d currencies=STD \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about THB to STD

How much is 1 THB in STD?

1 Thai Baht is 651.62 old São Tomé dobras at the mid-market rate of 4 October 2026, 03:38 UTC, and 1 STD is 0.00153464 THB.

What was the THB to STD rate over the last year?

Over the last 52 weeks 1 THB ranged from 638.229 to 680.099 STD, 656.142 STD on average.

Which exchange rate is this?

The mid-market rate: the midpoint between what currency markets pay and ask for THB/STD, without the margin a bank or card issuer adds, so the rate you are charged is usually a little worse.