The Marginal Benefit Calculator helps calculate the additional benefit gained from increasing a certain quantity. By inputting values for initial and final benefits and quantities, users can easily determine the marginal benefit.

This tool is particularly useful in economic analysis, helping assess the benefit change relative to a unit change in quantity.

### User Guide

Each input field in this calculator is designed to capture essential information. Use the following descriptions to understand what values to input and why:

**Input Field** |
**Description** |
**Example** |

**Initial Benefit ($)** |
Enter the initial benefit amount in dollars. |
**100** |

**Initial Quantity** |
Provide the starting quantity associated with the initial benefit. |
**50** |

**Final Benefit ($)** |
Input the final benefit in dollars after a change in quantity. |
**150** |

**Final Quantity** |
Enter the final quantity associated with the final benefit. |
**75** |

**Marginal Benefit ($)** |
This field displays the calculated marginal benefit. Leave blank to calculate. |
**Result** |

### How To Calculate

These examples demonstrate how to calculate the marginal benefit using different input scenarios.

**Example 1**: Calculate Marginal Benefit

**Step** |
**Calculation** |
**Result** |

**Initial Benefit ($)** |
**100** |
100 |

**Initial Quantity** |
**50** |
50 |

**Final Benefit ($)** |
**150** |
150 |

**Final Quantity** |
**75** |
75 |

**Formula** |
$\text{Marginal Benefit} = \frac{\text{Final Benefit} – \text{Initial Benefit}}{\text{Final Quantity} – \text{Initial Quantity}}$ |
– |

**Calculation** |
$\frac{150 – 100}{75 – 50}$ |
**2.00 $/unit** |

**Example 2**: Calculate Initial Benefit Using Known Marginal Benefit

**Step** |
**Calculation** |
**Result** |

**Marginal Benefit ($)** |
**2.00** |
2.00 |

**Final Benefit ($)** |
**150** |
150 |

**Initial Quantity** |
**50** |
50 |

**Final Quantity** |
**75** |
75 |

**Formula** |
$\text{Initial Benefit} = \text{Final Benefit} – (\text{Marginal Benefit} \times (\text{Final Quantity} – \text{Initial Quantity}))$ |
– |

**Calculation** |
$150 – (2 \times (75 – 50))$ |
**100 $** |

After entering the known values, click **Calculate** to obtain the missing value, or **Reset** to clear all fields for a new calculation.