Guinea Pig Cage Size Calculator — Sq Ft & C&C Grids
How big should your guinea pig cage be? This calculator sets the minimum, preferred and idealcage size for 1-6 piggies, outputs square footage and approximate footprint, and tells you how many 14-inch C&C grids you’ll need for a DIY build. Minimums follow the GuineaPigCages.com size standards and the RSPCA welfare guidance — 7.5 ft² for one pig, +3 ft² for each additional. Most pet-store cages fail this minimum by half or more.
Calculator
C&C cage grids
Standard C&C cage grids are 14″ × 14″ (1.36 sq ft each). You need:
Minimum: 6 grids · Preferred: 8 · Ideal: 10.
Cage size reference table
| Pigs | Minimum (ft²) | Preferred | Ideal |
|---|---|---|---|
| 1 | 7.5 | 7.5 | 10.5 |
| 2 | 7.5 | 10.5 | 13 |
| 3 | 10.5 | 13 | 16 |
| 4 | 13 | 16 | 19 |
| 5 | 16 | 19 | 22 |
| 6 | 19 | 22 | 25 |
Guinea pig housing terminology
- C&C cage
- Cubes & Coroplast — DIY cage built from 14-inch wire grids and corrugated plastic; standard for piggy welfare.
- n+1 floor space rule
- 7.5 ft² for one pig, +3 ft² per additional; doubles the official RSPCA welfare minimum.
- Run / play area
- Separate exercise zone of 4-8 ft²; piggies need daily out-of-cage time to stay healthy.
- Pet-store cage
- Commercial cages sold as “guinea pig” that almost always fail the 7.5 ft² minimum by 50%+.
Frequently Asked Questions
What is the minimum cage size for 2 guinea pigs?
GuineaPigCages.com recommends a minimum of 7.5 sq ft (e.g. 30″×36″) for two guinea pigs, with 10.5 sq ft preferred (30″×50″). More space reduces fighting, obesity and boredom.
What is a C&C cage?
C&C stands for Cubes & Coroplast. It's a DIY cage built from 14″×14″ metal wire storage-cube grids plus a corrugated plastic (Coroplast) base. Highly customizable, and the de-facto standard in the guinea pig community.
How many grids do I need for 2 guinea pigs?
For 2 pigs, you need at least 6 C&C grids (minimum), 8 grids preferred (the classic 2×4), and 10 grids for ideal.
Can male guinea pigs live together?
Neutered males or brothers raised together usually coexist. Two intact males not raised together often fight, especially if there's a female nearby. Always provide double the minimum space for multiple males.
Do guinea pigs need vertical space?
Not much — guinea pigs are ground animals and don't climb well. Ramps are fine but multi-level cages only count if pigs actually use the upper level. Prioritize floor space.
Is a 30" × 50" cage enough for 3 guinea pigs?
At 10.5 sq ft, a 30"×50" cage meets the minimum for 3 pigs but is below preferred (13 sq ft) and ideal (16 sq ft). Larger is always better.
Can I use a pet-store cage for guinea pigs?
Most pet-store cages sold as 'guinea pig cages' (e.g. 30"×18" = 3.75 sq ft) are far below minimum standards. They were designed for smaller rodents and are inadequate for guinea pigs.
Sources & References
- [1]GuineaPigCages.com Cage Size Recommendations — GuineaPigCages.com
- [2]
- [3]Caviary Cage Standards — American Cavy Breeders Association
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