Does the calculator know official values?

No. It performs arithmetic on the values you enter.

How is trade difference calculated?

It subtracts your entered total from the other entered total and reports the gap and percentage against the smaller non-zero total.

How is repeated box chance calculated?

For independent openings it uses one minus the probability of failing every opening.

Are income boosts included?

Only if you include them in the income-per-second rate you enter.

Player-input tools

Trade Weapons Calculator

Compare values you choose, project a visible income-per-second rate, or test a box chance scenario. Every result shows its assumptions; this site does not preload official values or odds.

What do my entered numbers imply?

Three working client-side modules calculate trade difference, income projection and repeated-chance scenarios from player-entered numbers while exposing all formulas and assumptions. The income module converts a per-second rate across a chosen time and compares it with an optional target. Box chance shows at-least-one, none and expected outcomes. The two-sided offer input shows both totals, difference, percentage and a user-threshold scenario label.

Your side valuesEnter non-negative values separated by commas or new lines. Values come from you.Their side valuesUse the same value basis on both sides. This site has no official price feed.

Your fair-range tolerance (%)A preference for this comparison—not an official Trade Weapons rule.

Based on your inputs

Your total

Their total

Difference

Percent difference

+0%

Enter at least one value on each side

This is arithmetic, not an official value or trade verdict. Re-check item names, sources, dates and anything the numbers do not capture.