Small Pets Hub – Rabbits, Guinea Pigs & Hamsters
Welcome to the Small Pets Hub on PetCalculators. Use these tools and vet-inspired guides to understand your rabbit’s and guinea pig’s age in human years, track your hamster’s weight, and learn key lifespan information — always as a complement to your exotic vet.
Small pets calculators & tools
Use these tools for quick, realistic estimates.Rabbit Age & Lifespan Calculator
See your rabbit’s age in human years and lifespan stage.
- Uses real rabbit lifespan curves
- Shows “young”, “adult” & “senior” stages
Guinea Pig Age Calculator
Convert your guinea pig’s age to human years.
- Based on species-specific aging curve
- Shows maturity, adult, and senior ranges
Hamster Weight Calculator
Check if your hamster’s weight is within a healthy range.
- Includes healthy ranges for Syrian & dwarf hamsters
- Useful for spotting early signs of illness
Small pet guides linked to these tools
Rabbits · Lifespan
How Long Do Rabbits Live? Complete Lifespan Guide
Typical rabbit lifespan ranges, factors that shorten or lengthen lifespan, and early warning signs to watch for.
Read the rabbit lifespan guide →Guinea pigs · Age
Guinea Pig Age Chart (Human Years Conversion Explained)
How guinea pigs age compared to humans, what counts as “adult” or “senior”, and how to use age charts responsibly.
Read the guinea pig age guide →Hamsters · Weight
How Much Should a Hamster Weigh? Healthy Range Guide
Normal weight ranges for Syrian and dwarf hamsters, what sudden changes mean, and when to call your vet.
Read the hamster weight guide →How to use the Small Pets Hub
1. Start with the right calculator
Pick the calculator that matches your pet — rabbit, guinea pig or hamster — and get a helpful estimate.
2. Use the matching guide
Read the related guide to understand your pet’s age, weight or lifespan more deeply.
3. Combine numbers with daily observation
Small pets hide illness very well. Use these tools to track trends — but talk to your vet about any concerns.
Keep this Small Pets Hub handy
Bookmark this page to quickly find all small pet calculators and guides.