MurphkitschTHE ODDLY USEFUL TOOL LAB
한국어
Home / Math & science

Universe Expansion Calculator

Spatially flat matter-plus-cosmological-constant ΛCDM model neglecting radiation,restricted to redshift0–10. Parameters are illustrative; no observational fit,light-travel distance or cosmic age.

Spatially flat matter-plus-cosmological-constant ΛCDM model neglecting radiation,restricted to redshift0–10. Parameters are illustrative; no observational fit,light-travel distance or cosmic age.

Your workbenchInputs are not stored

Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Hubble parameter at redshifthubble*sqrt((matter*(1+redshift)^3+(1-matter)))
Scale factor relative to today1/(1+redshift)
Matter density fraction at epochmatter*(1+redshift)^3/(matter*(1+redshift)^3+(1-matter))
Deceleration parameter(0.5*matter*(1+redshift)^3-(1-matter))/(matter*(1+redshift)^3+(1-matter))

References