About GAG Calc
The most accurate, transparent Grow a Garden Calculator on the web — built and maintained by the community, verified daily.
Last reviewed .
Our mission
GAG Calc is a fanmade, open community tool for Roblox players of Grow a Garden. We exist to make pet trading transparent and gardening optimal for every player — no hidden formulas, no pay-to-win advice, no inflated values, no fake pets.
Every pet, crop, mutation and probability on this site is cross-verified against the Fandom Wiki and the official Roblox game before publishing.
How we work — the 4-layer verification pipeline
- In-game testing first — every formula (weight scaling, XP curve, mutation multipliers) is verified by playing the game. We never extract from game code.
- Community submissions — value changes come in via email submissions.
- Cross-source verification — at least 2 independent sources must agree before a value moves.
- Editorial review — final approval by the GAG Calc editorial team.
Read the full methodology.
What makes us different from other GAG calculators
| Feature | GAG Calc | Typical competitor |
|---|---|---|
| Real pets only (no fakes) | ✅ 306 indexed | ⚠️ varies |
| Real crops indexed | ✅ 436 | ~50 |
| Pet × Pet comparison tool | ✅ | ❌ |
| Bulk crop calculator | ✅ | ❌ |
| Public REST API | ✅ | ❌ |
| Embed widget for streamers | ✅ | ❌ |
| Author profiles & bylines | ✅ | ❌ |
| Per-pet update history | ✅ | ❌ |
| Source citations on every page | ✅ | ❌ |
| llms.txt for AI search | ✅ | ❌ |
| Cmd+K instant search | ✅ | ❌ |
| WFL adjustable threshold | ✅ ±2/5/10% | fixed |
Our team
GAG Calc is maintained by a small editorial team and supported by community moderators. Read about each contributor: /authors.
- GAG Calc Team — Lead Editor & Data Engineer
- Community Moderators — Trade verifiers
What we cover
- 306 pets indexed across 7 rarity tiers
- 436 crops with values, weights and grow times
- 40+ mutations with stack rules
- 8 dedicated calculators
Daily-updated public changelog available.
Tools we offer (all free)
- Main calculator — pet explorer + 6 calculators on the homepage
- Pet Value Calculator
- Crop Value Calculator
- WFL Trade Checker
- Pet Comparison Tool
- Bulk Crop Calculator
- Pet XP Calculator
- Egg Hatch Calculator
- Public REST API
What we never do
- ❌ Make up pet data (every pet is verified against Fandom Wiki)
- ❌ Inflate values to drive ad revenue
- ❌ Sell user data (no third-party trackers)
- ❌ Run interstitial pop-up ads
- ❌ Charge for basic calculator access
Not affiliated
GAG Calc is fanmade. We are not affiliated with Roblox Corporation or the developers of Grow a Garden. All trademarks belong to their respective owners. Pet images sourced from the Grow a Garden Fandom Wiki under fair-use for fan content.
Get in touch
Email (fastest): [email protected]
Twitter/X: @gagcalc
Contact form: /contact
Last updated . See /changelog for revision history.