Proof Engine Lab · live in your browser · free

Your number, stacked next to you.

Any amount in $100 bills at true size. A million dollars is a cube about 22.5 cm on a side; a trillion is a block about 22 m tall. You stand beside it at 1.8 m, so the picture is honest at every size.

One billion dollars in stacked $100 bills next to a person, drawn by Proof Engine

Live engine loads in a moment (301 KB). This is a still from it.

Your amount

Amount in US dollars

Wear the Cuban link

One US bill is 6.14 x 2.61 inches and 0.0043 inches thick (Bureau of Engraving and Printing). Sources on the calculator.

How to use it: type an amount (250000, 2.5m, 40 billion or 1e12) or tap a preset. The pile redraws as you type. For the weight, volume and pallets, the money size calculator does the maths.

How it works

It is the real engine. Proof Engine is the Rust renderer O'BLOCK ships with. For the web I compiled it to WebAssembly (301 KB gzipped) and swapped its desktop OpenGL window for a WebGL2 canvas. Same glyph-particle renderer, same HDR bloom and colour grade as the game.
True scale. $100 bills: a million dollars is 10,000 bills, a cube 0.225 m on a side. Bigger amounts grow with the cube root, so a thousand times the money is only ten times wider.
Readable at any size. The pile is drawn as at most about 700 cubes, each a power of ten in cash ($10,000 and up), so a trillion still fits the screen. When you shrink to a speck, a marker shows where you stand.
The same room as the game. This is O'BLOCK's money room: in the game it shows your own cash pile in your crib.
Nothing leaves your device. Everything is computed in your browser tab. No account, no upload, no tracking of what you make.