Currency converter
OP to SLE

Optimism (OP) to Sierra Leonean Leone (SLE)

Convert Optimism to Sierra Leonean leones at the live mid-market rate. Reverse: SLE to OP

Amount

From

1 Optimism =

2.96 SLE −0.13% today

1 OP = 2.96303 SLE · 1 SLE = 0.337492 OP

Mid-market rate, updated 00:47 UTC. Paid plans update as often as every 60 seconds. Get OP→SLE rates via API

OP to SLE over the last year

52-week high: 17.2564
52-week low: 1.9022
52-week average: 4.6464
Change over the year: −82.72%

Conversion tables

OP to SLE
OP	SLE
1 OP	2.96 SLE
10 OP	29.63 SLE
100 OP	296.30 SLE
1,000 OP	2,963.03 SLE
10,000 OP	29,630.35 SLE
50,000 OP	148,151.75 SLE
100,000 OP	296,303.49 SLE

SLE to OP
SLE	OP
1 SLE	0.3375 OP
10 SLE	3.37491806 OP
100 SLE	33.74918060 OP
1,000 SLE	337.49180600 OP
10,000 SLE	3,374.91806000 OP
50,000 SLE	16,874.59030000 OP
100,000 SLE	33,749.18060000 OP

Get OP→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=OP -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=OP -d currencies=SLE \
  -d date=2025-10-02 \
  -H "apikey: YOUR-API-KEY"

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Questions about OP to SLE

How much is 1 OP in SLE?

1 Optimism is 2.96303 Sierra Leonean leones at the mid-market rate of 2 October 2026, 00:47 UTC, and 1 SLE is 0.337492 OP.

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

Over the last 52 weeks 1 OP ranged from 1.90224 to 17.2564 SLE, 4.6464 SLE on average.

Which exchange rate is this?

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