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Convert STD to USD Currency Online
Enter any amount above to convert Old São Tomé Dobra (STD) to US Dollars (USD), or vice versa.
Rate Info
About This Reference Rate
This figure is derived, not quoted directly: 1,000 old dobras (STD) equal 1 new dobra (STN), and the new dobra is then compared to the dollar through its euro peg. STD banknotes were withdrawn from circulation after the 2018 changeover, so this reference is meant for historical prices and old currency, not live transactions. This page is offered as a general reference and isn't financial advice. Because STD is a retired currency code, treat this figure as a historical conversion rather than a live market price.
Common Uses
Why People Look Up This Pair
A few specific situations explain most of the interest in comparing these two currencies.
Old Banknotes and Coins
Pre-2018 dobra notes, often printed in large denominations like 50,000 or 100,000, sometimes turn up in old wallets or collections. This rate helps figure out roughly what they'd have been worth in dollars.
Understanding the 2018 Redenomination
Anyone researching São Tomé and Príncipe's monetary history, or comparing it to similar redenominations elsewhere, uses this pair to see how the old and new dobra relate to a familiar currency like the dollar.
Interpreting Historical Prices
Older business records, academic papers, or news archives that quote prices in STD are easier to make sense of once converted through this rate into current dollar terms.
Quick Reference
Old Dobra Amounts Converted to US Dollars
A rounded reference table for common amounts, based on the rate discussed above.
| Amount (STD) | Formula | Result (USD) |
|---|---|---|
| 1,000 STD to USD | 1,000 ÷ 21,000 | $0.05 |
| 5,000 STD to USD | 5,000 ÷ 21,000 | $0.24 |
| 10,000 STD to USD | 10,000 ÷ 21,000 | $0.48 |
| 50,000 STD to USD | 50,000 ÷ 21,000 | $2.38 |
| 100,000 STD to USD | 100,000 ÷ 21,000 | $4.76 |
| 500,000 STD to USD | 500,000 ÷ 21,000 | $23.80 |
| 1,000,000 STD to USD | 1,000,000 ÷ 21,000 | $47.60 |
| 5,000,000 STD to USD | 5,000,000 ÷ 21,000 | $238.00 |
| 10,000,000 STD to USD | 10,000,000 ÷ 21,000 | $476.00 |
Got Questions?
Frequently Asked Questions
What is a recent STD to USD exchange rate?
About 0.0000476 US dollars per old dobra, or roughly 21,000 old dobras per dollar. This isn't a live traded rate; it's calculated from the 1,000:1 redenomination into the current dobra (STN).
Is the old São Tomé dobra (STD) still used?
No. STD was withdrawn from circulation after São Tomé and Príncipe redenominated its currency in 2018, replacing it with a new dobra, STN, worth 1,000 old dobras.
Why did São Tomé and Príncipe redenominate its currency?
Years of inflation had pushed everyday prices into the hundreds of thousands or millions of dobras, making transactions cumbersome. Dropping three zeros simplified pricing, accounting, and everyday math for a fresh start.
How much is 100,000 old dobras in US dollars?
100,000 STD comes to roughly $4.76 at the derived rate used here, useful mainly for valuing an old high-denomination banknote from before 2018.
What's the difference between STD and STN?
STD is the retired pre-2018 dobra, while STN is the current dobra introduced in the redenomination. One STN equals 1,000 STD, so converting between them is a simple shift of the decimal point.
Can I still exchange old STD banknotes?
In most cases no, since the changeover period for exchanging old notes at the central bank has long passed. Old STD notes are now primarily of interest to currency collectors rather than for active exchange.
How do I convert old STD prices to today's dobra?
Divide the STD figure by 1,000 to get the equivalent in STN. From there, the usual STN to USD reference rate applies for a dollar comparison.
Is a currency redenomination the same as devaluation?
No. Redenomination just changes the scale of the numbers used, like dropping zeros, without necessarily changing the currency's real value. Devaluation is a separate policy action that actually reduces a currency's worth relative to others.
Where can I find historical STD exchange rate data?
Central bank archives for São Tomé and Príncipe, along with historical data from major currency reference sites, typically carry STD rates from before the 2018 changeover.