Capital composition & profit
Explore the organic composition of capital and the tendency of the rate of profit to fall.
Quantitative political economy
Work through the relations of capital.
A browser-based toolkit for Marxian political economy. Calculators, step-by-step derivations, and citations to help you follow the numbers and understand the theory.
Start with two free calculators. Each result comes with a derivation, assumptions, and a source you can read for yourself.
Free calculators
Free · Worked example included
Surplus value
Find the surplus remaining after variable capital is replaced from newly created value.
Open calculator →
Free · Worked example included
Rate of exploitation
Express surplus value relative to variable capital, with the ratio and percentage shown together.
Open calculator →
What we’re building
Reproduction schemas
Work through the conditions of social reproduction.