Lift a Cube Strength Calculator

Lift a Cube comes down to one number: strength per second. Enter your build below, pick the cube you're grinding toward, and see how long it will take — plus which upgrade cuts that time the most.

Last verified: 2026-09-14 · Runs entirely in your browser

JavaScript is off. The calculator needs it to run. The formula is simple though: strength/sec = (base per push-up × material multiplier) ÷ push-up time. Presets and tiers are on thecubes page and arms page.

Time to target

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Progress to target—

Strength per second—

Strength remaining—

Push-ups needed—

Strength per hour—

Strength per day (active training)—

Next-upgrade advice

Enter your build to see which upgrade saves the most time.

How the calculator works

The whole tool is one formula from the game's mechanics:

strength/sec = (base strength per push-up × material multiplier × bubble boost) ÷ push-up time

Time to target = remaining strength ÷ strength per second. Because the developer publishes no official stat sheet, preset gates come from community-observed cube data and are labelled as approximations. Anything you type stays in your browser — results are shared only through the URL, never uploaded.

Reading the advice

Push-up time — the cheapest lever. Each observed stage (0.85s → 0.6s → 0.5s) multiplies your rate; see arms.
Material multiplier — scales every rep; better rolls come from further chests.
Bubble boost — free multipliers that spawn at training stations; standing in the spawn area raises your average.