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Old Sierra Leonean Leone (SLL) to Japanese Yen (JPY)

Convert old Sierra Leonean leones to Japanese yen at the live mid-market rate. Reverse: JPY to SLL

The Old Sierra Leonean Leone is no longer in use

Old Sierra Leonean Leone (SLL) was replaced by the Sierra Leonean Leone (SLE) in 2022. For today’s money, convert SLE to JPY.

1 Old Sierra Leonean Leone =

0.006876 JPY +0.06% today

1 SLL = 0.00687597 JPY · 1 JPY = 145.434 SLL

Mid-market rate, updated 00:49 UTC. Paid plans update as often as every 60 seconds. Get SLL→JPY rates via API

SLL to JPY over the last year

0.00650.006750.007Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.0071849
52-week low
0.0064721
52-week average
0.0069043
Change over the year
+6.24%

Conversion tables

SLL to JPY
SLL JPY
1 SLL 0.006876 JPY
10 SLL 0.06876 JPY
100 SLL 0.6876 JPY
1,000 SLL 7 JPY
10,000 SLL 69 JPY
50,000 SLL 344 JPY
100,000 SLL 688 JPY
JPY to SLL
JPY SLL
1 JPY 145.43 SLL
10 JPY 1,454.34 SLL
100 JPY 14,543.41 SLL
1,000 JPY 145,434.12 SLL
10,000 JPY 1,454,341.17 SLL
50,000 JPY 7,271,705.83 SLL
100,000 JPY 14,543,411.65 SLL

Get SLL→JPY rates via API

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

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=SLL -d currencies=JPY \
  -d date=2025-10-02 \
  -H "apikey: YOUR-API-KEY"

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Questions about SLL to JPY

How much is 1 SLL in JPY?

1 Old Sierra Leonean Leone is 0.00687597 Japanese yen at the mid-market rate of 2 October 2026, 00:49 UTC, and 1 JPY is 145.434 SLL.

What was the SLL to JPY rate over the last year?

Over the last 52 weeks 1 SLL ranged from 0.00647211 to 0.00718486 JPY, 0.00690427 JPY on average.

Which exchange rate is this?

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