Enter the solar mass and the solar luminosity into the Mass to Light Ratio Calculator. The calculator will evaluate and display the Mass to Light Ratio.

## Mass to Light Ratio Formula

The following formula is used to calculate the Mass to Light Ratio.

MLR = SM / SL
• Where MLR is the Mass to Light Ratio ( )
• SM is the solar mass
• SL is the solar luminosity

To calculate the mass-to-light ratio, divide the solar mass by the solar luminosity.

## How to Calculate Mass to Light Ratio?

The following example problems outline how to calculate Mass to Light Ratio.

Example Problem #1:

1. First, determine the solar mass.
• The solar mass is given as: 5.
2. Next, determine the solar luminosity.
• The solar luminosity is provided as: 1000.
3. Finally, calculate the Mass to Light Ratio using the equation above:

MLR = SM / SL

The values given above are inserted into the equation below and the solution is calculated:

MLR = 5 / 1000 = .005

Example Problem #2:

For this problem, the variables required are provided below:

solar mass = 1000

solar luminosity = 2500201