6kg looks cheaper at the till. 13kg is cheaper per kg. Which wins depends on how much you actually cook — here's the math.
The Numbers
| 6kg | 13kg | |
|---|---|---|
| Refill price | ~KSh 1,400 (typical) | KSh 2,750–3,300 |
| Cost per kg | ~KSh 230 | ~KSh 212–254 |
| Burn hours (medium flame) | ~20–24 hrs | ~45–55 hrs |
Cost-Per-Day by Household
| Household | 6kg monthly cost | 13kg monthly cost |
|---|---|---|
| 1 person, light cooking | ~KSh 1,400 | ~KSh 1,500–1,650 |
| Couple, daily cooking | ~KSh 2,100 | ~KSh 1,850–2,200 |
| Family of 4, daily | ~KSh 4,200 | ~KSh 2,300–2,750 |
The crossover: for one person cooking lightly, 6kg wins slightly. For two or more cooking daily, 13kg is always cheaper per month — sometimes half the cost.
Beyond Price
- Convenience: 6kg refills more often — a mid-dinner empty is a real annoyance for families.
- Backup factor: many homes run 13kg main + 6kg backup — the best of both.
- Kitchen space: 6kg fits anywhere; 13kg needs a bit more room.
- Upfront cost: a 6kg complete set (~KSh 3,000) is cheaper to start than a 13kg set (~KSh 6,000–8,500).
Our Recommendation
- Solo/student/bedsitter: 6kg — low upfront, low monthly.
- Couple cooking daily: 13kg — cheaper per kg, fewer refills.
- Family 3+: definitely 13kg — the math is clear.
- Everyone: keep a 6kg spare once you can afford one.
Frequently Asked Questions
Is a 6kg cheaper to start with?
Yes — the complete set is roughly half the upfront of a 13kg set.
Will I really feel the difference per month?
For a family: yes — KSh 1,500–2,000/month difference between sizes is real money.
Can I upgrade from 6kg to 13kg later?
Yes — buy a 13kg set, keep the 6kg as backup. You'll need the 13kg regulator too.
Either size, same-day: compare and order both sizes now. Shop cylinders →