Tool

Shrink Goal Calculator

Use your current shrink gain, rebirth multiplier, movement pace, and passive time to estimate the active grind still needed for your next target.

Planner HUD

Set the target gate, then tune the run.

Active stepsAFK estimateOffline progress

Estimated active time

9 min
Effective gain per step
1
Active gain per minute
120
Passive shrink estimate
0

This planner is a practical estimate, not an official formula. AFK is modeled at 60% active speed and offline progress at 25% active speed until public data proves a better ratio.

How to use the +1 Shrink per Step calculator

This ShrinkPerStep calculator is built for the long-tail search players actually use: +1 Shrink per Step calculator, shrink goal planner, rebirth multiplier estimate, AFK shrink estimate, and offline progress calculator. Enter your current shrink, target shrink, shrink gain per step, rebirth multiplier, movement pace, AFK minutes, and offline minutes to estimate the active time left before your next gate.

Treat the output as a planning range, not an official Roblox formula. If a Shrink cube upgrade changes your per-step gain, update the calculator before deciding whether to keep walking or rebirth. For most runs, the best target is the next gate that pays Wins, because Wins feed Shrink cubes and Shrink cubes make every future step smaller faster.