Human Age to Goblin Age Calculator

Convert human age to goblin age with G = 2H + 4 or reverse the formula, with milestones, a conversion table, and an optional campaign model.

Human Age to Goblin Age Formula

This page uses a fictional comparison model, G = 2H + 4, rather than an official rule for any game or story. Choose either conversion direction; Custom lore model can change the base, positive growth rate and comparison milestone. Blank optional fields use the displayed defaults. The default inverse requires G ≥ 4; custom goblin ages must be at least the selected base.

G = 2H + 4

Variables:

G is the goblin age
H is the human age

To calculate the goblin age, multiply the human age by 2 and then add 4. Conversely, if you have the goblin age, subtract 4 and divide by 2 to determine the equivalent human age.

Human Age to Goblin Age Conversion Table (G = 2H + 4)
Human Age (years)	Goblin Age (years)
0	4
1	6
2	8
3	10
4	12
5	14
6	16
8	20
10	24
12	28
13	30
15	34
16	36
18	40
21	46
25	54
30	64
40	84
50	104
65	134
*Model used: G = 2 × H + 4 (Goblin years). Inverse: H = (G − 4) / 2.

What is Goblin Age?

Goblin age here is a fictional comparison with human age. This page assumes 4 goblin years at human age 0, followed by 2 goblin years per human year. Fantasy settings use different lifespans and maturity rules; this calculator does not establish those rules.

How to Calculate Goblin Age?

Follow these steps to convert between human and goblin ages:

Determine the human age (H) or goblin age (G) that you are starting with.
If you have the human age, use the formula G = 2H + 4 to calculate the goblin age.
If you have the goblin age, use the formula H = (G – 4) / 2 to convert it back to human age.
Verify your calculation using the calculator above.

Example Problem :

Consider a human who is 10 years old. Using the formula:

Goblin Age = 2 * 10 + 4 = 24

Human Age to Goblin Age Calculator screenshot