Cambodian riel to Singapore dollars, in your head
One rule, the error band that comes with it, and the point at which it stops being the right rule. Updated from the live rate feed.
Riel to Singapore dollars. Accurate to within 1.5% at today's rate, which means it reads about 1.5% cheaper than the real price — round up, not down.
The ladder
The middle column is what the rule gives you standing in a market. The right column is the real number, so you can see exactly where the shortcut costs you.
| Cambodian riel | Rule of thumb | Actual |
|---|---|---|
| ៛1,000 | S$0.313 | S$0.317 |
| ៛2,000 | S$0.625 | S$0.635 |
| ៛5,000 | S$1.56 | S$1.59 |
| ៛10,000 | S$3.13 | S$3.17 |
| ៛20,000 | S$6.25 | S$6.35 |
| ៛50,000 | S$15.63 | S$15.87 |
| ៛100,000 | S$31.25 | S$31.74 |
| ៛200,000 | S$62.5 | S$63.48 |
| ៛500,000 | S$156.3 | S$158.7 |
Going the other way
Useful at the ATM, where you choose an amount in Singapore dollars and want to know what lands in your hand.
| Singapore dollars | Cambodian riel |
|---|---|
| S$1 | ៛3,151 |
| S$5 | ៛15,753 |
| S$10 | ៛31,506 |
| S$20 | ៛63,013 |
| S$50 | ៛157,532 |
| S$100 | ៛315,064 |
What catches people out in Cambodia
Cambodia runs on US dollars in practice. You will usually be quoted in dollars and given riel as change for amounts under a dollar, at a flat 4,000 riel to $1.
When this rule stops working
Rules of thumb rot quietly. This one holds while the rate stays roughly between 3,150 and 3,250 KHR to the Singapore dollar. Outside that band a different divisor becomes the better one to memorise. We regenerate this page from the live rate feed, so the date above tells you how fresh the number is — if you are reading this a long way after August 2026, check it before you rely on it.
Or skip the arithmetic entirely
RoamRate does this conversion with no signal, in one hand, on a number pad built for a thumb. Free for SGD; KHR and 150+ other currencies unlock for $4.99, once.
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