What XP curve does this use?

It uses a common levelling-mod curve where the XP to advance from a level scales with that level squared, multiplied by a base amount. This makes each level cost progressively more experience, matching how most Terraria RPG mods scale difficulty as you climb.

How is the progress percent calculated?

Progress is the XP you have earned into the current level divided by the total XP that level requires, expressed as a percentage. If you enter more XP than the level needs, the tool caps it at the level total so progress never exceeds one hundred percent.

How are the hours-to-level estimated?

The remaining XP is divided by the XP-per-hour of your chosen farming method. Faster methods like statue or invasion farms clear the remaining XP in far less time than early-game slime grinding, so the estimate updates as you change the method.

Why does each level take more XP than the last?

Because the requirement grows with level squared. A low level needs only a small amount of XP, but high levels demand much more, which is why efficient farming methods matter increasingly as you progress toward the cap.

Do these match my specific mod exactly?

Not necessarily. Terraria has many levelling mods with different curves and rates, so this tool uses a representative model. Use it to understand the shape of the grind and compare farming methods rather than as an exact readout of one mod's tables.

Terraria XP & Level Calculator

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The Terraria XP & Level Calculator shows exactly where you stand on the climb to the next level in any of the popular RPG and levelling mods. It turns a vague XP bar into concrete numbers: what the level costs, what remains, and how long it will take.

How it works

The XP required to advance from a level grows with the square of the level:

xpToAdvance(L) = base x L^2
remaining      = xpToAdvance(L) - xpAlreadyEarned
hoursToNext    = remaining / xpPerHour

Your progress percent is the XP earned divided by the level’s total requirement. The hours-to-next figure simply divides the remaining XP by the XP-per-hour of the farming method you select, so you can compare a slow early grind against a high-output farm.

Tips and example

At level 20 with half the bar filled, a level-squared curve means the remaining XP is already several thousand points — and switching from cavern grinding to an invasion or statue farm can cut the wait from hours to minutes. Check the remaining XP, pick the fastest method available to you at your current power level, and read the updated time estimate before committing to a farming session.