A fully rested character accumulates a full rest level in 160 hours (6.67 days).
You can tell you’re resting when your character portrait (in the default UI) has a special “zzz” balloon on it. This means that it takes 10 days of rest in a capital city or inn to get a full Rest EXP bar, or 40 days outside of one.
When you’re “outside” signed off, you can get quiet at a quarter the price of an inn or a bar every 32 hours.
Everywhere else you get 1 bubble every 32 hours. The most rested experience you can have is 30 bubbles or 150% of your current level. Therefore: It takes 240 hours or 10 days to rest (in an inn or a capital city) before you stop gaining rested XP.
Maximum bonus is 30 bubbles or 1.5 levels. At 10 hours per bubble, it takes 300 hours or 12.5 days to max the rest of a character.
Rested experience accumulates at a rate of 5%, or 1 bubble for every 8 hours of rest your character takes. You can accumulate a maximum of 30 Bubbles of Recovery Experience – which is 150%. This means that for a 10-day break, you can gain one and a half levels of Rested experience.
In other words, you can rest your character in an inn or capital city for up to 10 days (without gaining experience) before reaching the maximum amount of rest, and a dormant character saves a full rest level in 160 hours (6 days, 16 hours).
Rest in a settlement to receive the Well Rested XP bonus
On the rare occasion that you need to stop playing New World for a while, place be sure to park your character in a settlement before logging out. This way you will automatically gain the Rested status effect when you return.
You can see your current Rest XP as part of your experience bar on your HUD. It looks like a weak extension of your current experience. If the bar is blue, it means you have saved enough Rest EXP to advance to the next level.
It takes 7 days in a Haven (online or offline) to accumulate maximum Rest XP. You gain a rest bar of approximately 0.595% TNL per hour, which takes 168 hours to accumulate the 100% TNL max.
The status of the sanctuary is indicated by a crescent icon to the right of the experience bar. Rested XP offers a 50% bonus to XP gained from defeating enemies, synthesizing recipes, and gathering items. Because of this, rested EXP is consumed as a percentage of the bar and not as a flat amount.