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Old São Tomé Dobra (STD) to Sierra Leonean Leone (SLE)

Convert old São Tomé dobras to Sierra Leonean leones at the live mid-market rate. Reverse: SLE to STD

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 STN to SLE.

1 Old São Tomé Dobra =

0.001056 SLE +0.61% today

1 STD = 0.00105598 SLE · 1 SLE = 946.985 STD

Mid-market rate, updated 14:00 UTC. Paid plans update as often as every 60 seconds. Get STD→SLE rates via API

STD to SLE over the last year

0.001050.00110.00115Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.0011721
52-week low
0.0010475
52-week average
0.0010806
Change over the year
−4.91%

Conversion tables

STD to SLE
STD SLE
1 STD 0.001056 SLE
10 STD 0.01056 SLE
100 STD 0.1056 SLE
1,000 STD 1.06 SLE
10,000 STD 10.56 SLE
50,000 STD 52.80 SLE
100,000 STD 105.60 SLE
SLE to STD
SLE STD
1 SLE 946.98 STD
10 SLE 9,469.85 STD
100 SLE 94,698.50 STD
1,000 SLE 946,984.98 STD
10,000 SLE 9,469,849.81 STD
50,000 SLE 47,349,249.03 STD
100,000 SLE 94,698,498.05 STD

Get STD→SLE rates via API

The live rate, the rate on any past day or a whole range, for SLE 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=STD -d currencies=SLE \
  -H "apikey: YOUR-API-KEY"

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

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Questions about STD to SLE

How much is 1 STD in SLE?

1 Old São Tomé Dobra is 0.00105598 Sierra Leonean leones at the mid-market rate of 4 October 2026, 14:00 UTC, and 1 SLE is 946.985 STD.

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

Over the last 52 weeks 1 STD ranged from 0.00104747 to 0.00117205 SLE, 0.00108061 SLE on average.

Which exchange rate is this?

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