The Isle Growth Calculator
Choose a dinosaur and lifecycle milestones to estimate growth time. Diet applies before adulthood; Elder ageing is calculated separately.
Use 1 unless your server changes growth speed. The model applies the same server multiplier to every stage.
CALCULATING
Ceratosaurus
25% → 75% · Perfect Diet
ESTIMATED TIME1 hour
Read the Ceratosaurus guide →Rounded up to the next minute; this is not an in-game countdown.
Time by stage
| Stage | Growth range | 1× baseline | Your settings |
|---|---|---|---|
| Juvenile | 25% → 50% | 1 hour | 20 minutes |
| Sub-adult | 50% → 75% | 2 hours | 40 minutes |
Compare diet modes
Great Diet
2 nutrients1 hour 30 minutesPerfect Diet
3 nutrients1 hourHow to read the result
This is time between stage milestones, not an interpolation from your current growth percentage. If you are partway through a stage, choosing its start includes time you have already played.
Before Adult: baseline time ÷ diet rate ÷ server multiplier. During Elder: baseline time ÷ server multiplier. The result assumes your chosen conditions stay constant; hunger, thirst, nutrient loss or custom server rules can change actual time.
Reference data: EFG 0.21.772, compiled from species stage tables. This does not include timings from separate EFG gameplay trials.