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`FxR = 100^[((m_2 - m_1)/5)] `

1

The **Flux Ratio from Magnitudes** calculator computes the ratio of the intensity of light coming from two celestial objects based on their magnitudes (m_{1} and m_{2}).

**INSTRUCTIONS:** Enter the following:

- (
**m**) Intensity of light magnitude associated with object 1._{1} - (
**m**) Intensity of light magnitude associated with object 2._{2}

**Flux Ratio (FxR):** The calculator returns the flux ratio.

The **Flux Ratio from Magnitudes** is the ratio of the intensity of light coming from two celestial objects based on their magnitudes. Two different objects with magnitudes m_{1} and m_{2} have a corresponding flux ratio given by this formula:

`FxR = 100^((m_2−m_1) / 5)`

where:

- FxR = Flux Ratio
- m
_{2}= magnitude of first object - m
_{1}= magnitude of second object

The flux ratio, f_{2}/f_{1} is the ratio of the intensity of light coming from object 1 compared to the intensity coming from object 2.

The **Astronomy Calculator Suite** includes functions that are useful for studying astronomy and include the following:

- Kepler's 3
^{rd}Law formula T² = (4π • R³)/(G • M) - Small Angle Formula
*Small Angle Formula**α = S / D* - Flux and Magnitude formulas
- Telescope formulas
- Mass formulas
**Mass from Luminosity****Mass from Acceleration and Radius****Mass from Speed and Separation****Mass of extra-solar planet from mass of star, radius of star orbit and radius of exoplanet orbit****Mass of extra-solar planet from mass and velocity of star and velocity of planet****Black Hole Mass Calculator****Black Hole Event Horizon Calculator**

- Relative Size Formulas
- Wavelength Formulas
- Other Formulas
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