Tortoise Daily Feeding Amount Calculator
Enter life stage, species, and body weight to get a starting-point daily feeding range in grams, instead of guessing between conflicting forum answers.
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Base Feeding Amount by Life Stage
| Life stage | Base amount |
|---|---|
| Hatchling (<1 yr) | ~5.0% of body weight/day |
| Juvenile (1-5 yr) | ~3.0% of body weight/day |
| Adult (5+ yr) | ~1.5% of body weight/day |
Species group and the range below shift this baseline up or down — the calculator above already accounts for both.
Why Life Stage Drives the Biggest Swing in Feeding Amount
Life stage sets the baseline percentage of body weight a tortoise is commonly fed each day — hatchlings have the fastest metabolism and the highest growth demands relative to their size, so they're commonly started around 5% of body weight per day, juveniles step down to roughly 3%, and adults, whose growth has mostly leveled off, commonly settle closer to 1.5%. Species then shifts that baseline in either direction: desert-native grazers such as sulcata and other African spurred tortoises are commonly fed slightly more relative to body weight on a bulkier, lower-calorie-density diet of grasses and hays, while tropical omnivores such as box turtles are commonly fed slightly less, since their diet runs richer and more calorie-dense per gram.
Russian and other Mediterranean tortoises sit closest to the unmodified life-stage baseline in commonly-cited guidelines, since their grazing diet is neither as fibrous as a sulcata's nor as dense as a tropical omnivore's.
Whatever range this tool suggests is a starting point, not a fixed prescription — individual appetite, activity level, and temperature all shift how much a given tortoise actually needs. The real long-term check is a monthly weigh-in, not this calculator alone: track whether your feeding amount is producing healthy growth with the Growth Rate Checker, and adjust the amount if your tortoise is gaining weight faster than expected or losing it.