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View Deal →Carnival Firenze vs Quantum of the Seas
Side-by-side cruise ship comparison · Updated April 2026
Quantum of the Seas is the significantly larger vessel at 168,666 GT — 25% more than Carnival Firenze's 135,156 GT. Quantum of the Seas offers more personal space with a space ratio of 40.4 GT per passenger versus 32.8. Built in 2020, Carnival Firenze is 6 years newer — an advantage for travellers seeking modern amenities and design.
Score: 1 – 6
Quick Compare
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Category
Carnival Firenze
Quantum of the Seas
Size
135,156 GT
168,666 GT
Passengers
4,126
4,180
Year Built
2020
2014
Crew Ratio
1:2.9
1:2.8
Space Ratio
32.8
40.4
Decks
14
—
Length
323.6m
348m
From Price
$330/pp
$669.65/pp
Comparison Verdict
Quantum of the Seas is the significantly larger vessel at 168,666 GT — 25% more than Carnival Firenze's 135,156 GT. Quantum of the Seas offers more personal space with a space ratio of 40.4 GT per passenger versus 32.8. Built in 2020, Carnival Firenze is 6 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Quantum of the Seas |
| Capacity | Quantum of the Seas |
| Modernity | Carnival Firenze |
| Service | Quantum of the Seas |
| Spaciousness | Quantum of the Seas |
| Decks | Tie |
| Length | Quantum of the Seas |
| Fleet Power | Quantum of the Seas |
Bottom line: Quantum of the Seas leads 6–1 across our categories — strongest in Size. Choose Quantum of the Seas for overall superiority; pick Carnival Firenze if Modernity matter more to you.
Which Ship Is Right for You?
Choose Carnival Firenze if...
- You want the newer ship (built 2020, 6yr newer)
- Save $339.65/person on sailings
Choose Quantum of the Seas if...
- Size matters to you (168,666 GT)
- More onboard variety (4,180 guests)
- Better service ratio (2.8:1 crew ratio)
- More space per guest (40.4 GT/pax)
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Frequently Asked Questions
How is the comparison score calculated?
We compute scores across 8 categories using real spec data — gross tonnage, passenger capacity, crew capacity, year built, length, deck count, space ratio, and fleet power. Each category awards one point to the winning ship.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40; mass-market ships often fall in the 30-40 range.
What does the passenger-to-crew ratio mean?
Passengers per crew member. Lower is better — more staff per guest means better service. Luxury lines aim below 2:1; large mainstream ships may be 3-4:1.
Are the prices shown accurate?
Prices are sourced from Cruisebound and reflect real-time availability. They may change based on cabin type, date, and demand. Click through to see the latest fares.
Can I compare more than two ships?
Yes — up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ vessels, revalidated every 5 minutes via ISR. The "Updated" timestamp shows when records were last modified.
