Scoring rules
The underlying dates are ordinary calendar arithmetic. The level metaphor and labels are presentation, not a biological rating.
Turn your age into an RPG-style character card.
Reframe calendar age as a game level: completed years become the current level and progress toward the next birthday becomes an XP-style progress bar.
The underlying dates are ordinary calendar arithmetic. The level metaphor and labels are presentation, not a biological rating.
Use the progress bar to see how far you are between your last and next birthday. It is more precise than simply assuming every year has the same number of days.
Halfway between two birthdays is roughly 50% XP for that level, while leap years can make the exact day count of the level different.
The RPG framing is entertainment. It does not rank maturity, health, achievement or personal worth.