AKI (R+M)/2 to RON
Type a value in AKI to get it in RON instantly.
98RON
98 RON is posted as about 93.5 at a US or Canadian pump.
Convert the other way: RON to AKI
What it means
Where does that octane sit?
Approximate: the gap between RON and MON varies with the blend, typically 8 to 12 points. Use the grade your owner’s manual asks for.
The math
How to convert AKI to RON
AKI = (RON + MON) ÷ 2, and MON is typically 9 below RON, so AKI ≈ RON − 4.5.
Example: 93.5 AKI = 98 RON.
Every unit
That petrol on every scale
Tables
AKI to RON conversion table
| AKI | RON |
|---|---|
| 82.5 AKI | 87 RON |
| 84.5 AKI | 89 RON |
| 85.5 AKI | 90 RON |
| 86.5 AKI | 91 RON |
| 87.5 AKI | 92 RON |
| 88.5 AKI | 93 RON |
| 89.5 AKI | 94 RON |
| 90.5 AKI | 95 RON |
| 91.5 AKI | 96 RON |
| 92.5 AKI | 97 RON |
| 93.5 AKI | 98 RON |
| 94.5 AKI | 99 RON |
| 95.5 AKI | 100 RON |
| 97.5 AKI | 102 RON |
RON to AKI conversion table
| RON | AKI |
|---|---|
| 87 RON | 82.5 AKI |
| 89 RON | 84.5 AKI |
| 90 RON | 85.5 AKI |
| 91 RON | 86.5 AKI |
| 92 RON | 87.5 AKI |
| 93 RON | 88.5 AKI |
| 94 RON | 89.5 AKI |
| 95 RON | 90.5 AKI |
| 96 RON | 91.5 AKI |
| 97 RON | 92.5 AKI |
| 98 RON | 93.5 AKI |
| 99 RON | 94.5 AKI |
| 100 RON | 95.5 AKI |
| 102 RON | 97.5 AKI |
Quick answers
Quick answers
- How many RON is 1 AKI?
- 1 AKI is 5.5 RON.
- How many RON is 10 AKI?
- 10 AKI is 14.5 RON.
- How many RON is 93.5 AKI?
- 93.5 AKI is 98 RON.
The units
About these units
AKI (R+M)/2 (AKI)
Anti-knock index posted at US and Canadian pumps.
RON (RON)
Research Octane Number, posted in Europe, Asia and Australia.
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