Convert 10 Old Sierra Leonean Leone (SLL) to Bhutanese Ngultrum (BTN)

Convert old Sierra Leonean leones to Bhutanese Ngultrum at the live mid-market rate. Reverse: BTN 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 BTN.

Amount

From

10 old Sierra Leonean leones =

0.04187 BTN +0.06% today

1 SLL = 0.00418685 BTN · 1 BTN = 238.843 SLL

Mid-market rate, updated 10:05 UTC. Paid plans update as often as every 60 seconds. Get SLL→BTN rates via API

SLL to BTN over the last year

52-week high: 0.0042404
52-week low: 0.0038752
52-week average: 0.0040688
Change over the year: +6.95%

Conversion tables

SLL to BTN
SLL	BTN
1 SLL	0.004187 BTN
10 SLL	0.04187 BTN
100 SLL	0.4187 BTN
1,000 SLL	4.19 BTN
10,000 SLL	41.87 BTN
50,000 SLL	209.34 BTN
100,000 SLL	418.68 BTN

BTN to SLL
BTN	SLL
1 BTN	238.84 SLL
10 BTN	2,388.43 SLL
100 BTN	23,884.31 SLL
1,000 BTN	238,843.13 SLL
10,000 BTN	2,388,431.30 SLL
50,000 BTN	11,942,156.51 SLL
100,000 BTN	23,884,313.02 SLL

Get SLL→BTN rates via API

The live rate, the rate on any past day or a whole range, for BTN 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=BTN \
  -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=BTN \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about SLL to BTN

How much is 10 SLL in BTN?

10 old Sierra Leonean leones is 0.04187 Bhutanese Ngultrum at the mid-market rate of 4 October 2026, 10:05 UTC, when 1 SLL = 0.00418685 BTN.

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

Over the last 52 weeks 1 SLL ranged from 0.00387518 to 0.00424043 BTN, 0.00406883 BTN on average.

Which exchange rate is this?

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