Gaming math lab · Progression · Original calculator
XP grind time and activity planner
On this page
Subtract earned XP from your goal, divide the remainder by XP per activity after the entered bonus, and round up to a whole activity.
Generic mathematical model, not a named game’s simulator. All starting values are invented examples. Supply verified values for your game and check the assumptions below.
Your scenario
Formula and units
Remaining = max(0, goal − current). XP per activity = base XP × (1 + bonus/100). Activities = ceil(remaining / XP per activity). Hours = activities × minutes / 60.
Worked example
A 10,000 XP goal with 2,500 already earned leaves 7,500. A 600 XP activity with a 25% bonus gives 750 XP, so ten activities are needed. At eight minutes each, that is eighty minutes, or about 1.333 hours of activity time.
How to use this comparison
Measure several activities and use an average that includes the downtime you want to budget. If your bonus is already included in the XP you observed, set bonus to zero. Enter a cumulative goal rather than a level number: level 40 is not forty XP.
Read the result correctly
Time is an estimate from the rate you supply, not a game guarantee. The milestone table divides the remaining work into quarters and rounds each point to whole activities. If your current XP meets or exceeds the goal, no further activities are required.
Model boundaries
This planner does not contain level curves. Goal and current must use the same cumulative XP scale. Bonuses are applied once as a simple percentage. There is no rested cap, daily limit, queue time, failure rate or diminishing return unless you include its effect in your entered averages.
Method: original arithmetic implementation and editorial examples reviewed October 16, 2026. Outputs follow the displayed formula and your inputs. We have not tested these mechanics inside a particular game.