South African rand to dirhams, 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.
Rand to dirhams. Accurate to within 0.0% at today's rate, which means it reads about 0.0% 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.
| South African rand | Rule of thumb | Actual |
|---|---|---|
| R2 | AED 0.444 | AED 0.445 |
| R5 | AED 1.11 | AED 1.11 |
| R10 | AED 2.22 | AED 2.22 |
| R20 | AED 4.44 | AED 4.45 |
| R50 | AED 11.11 | AED 11.12 |
| R100 | AED 22.22 | AED 22.23 |
| R200 | AED 44.44 | AED 44.46 |
| R500 | AED 111.1 | AED 111.2 |
| R1,000 | AED 222.2 | AED 222.3 |
Going the other way
Useful at the ATM, where you choose an amount in dirhams and want to know what lands in your hand.
| Dirhams | South African rand |
|---|---|
| AED 1 | R4.5 |
| AED 5 | R22.49 |
| AED 10 | R44.98 |
| AED 20 | R89.96 |
| AED 50 | R224.9 |
| AED 100 | R449.8 |
What catches people out in South Africa
The rand is one of the more volatile currencies on this list, so the rule is worth re-checking rather than remembering from a previous trip.
When this rule stops working
Rules of thumb rot quietly. This one holds while the rate stays roughly between 4.45 and 4.55 ZAR to the dirham. 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 AED; ZAR and 150+ other currencies unlock for $4.99, once.
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