# Degree of Operating Leverage Calculator

URL: https://speedycalculator.com/calculators/finance/degree-of-operating-leverage/
Last updated: 2026-10-25

> The degree of operating leverage calculator measures how sensitive operating income (EBIT) is to changes in sales – from contribution margin and operating income, or from the percentage changes in EBIT and sales.

## Inputs

- Units sold
- Price per unit
- Variable cost per unit
- Fixed costs
- Expected change in sales (%)

## Results

- Contribution margin
- Operating income (EBIT)
- Degree of operating leverage
- Expected change in EBIT

## Formula

```
DOL = contribution margin ÷ operating income = Q(P − V) ÷ (Q(P − V) − F)
DOL = % change in EBIT ÷ % change in sales
EBIT change ≈ DOL × sales change
```

## Explanation

Companies with high fixed costs (software, airlines) have high operating leverage: profits rise quickly when sales grow but fall just as fast when sales decline.

### How to use the Degree of Operating Leverage Calculator

- **Units sold**
- **Price per unit**
- **Variable cost per unit**
- **Fixed costs**
- **Expected change in sales**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter units sold, price per unit, variable cost per unit and fixed costs, and an expected change in sales.

### Tips

- Use consistent periods (a year or a quarter) for flow figures and period-end values for balances.
- Average opening and closing balances when a ratio mixes a flow with a stock.
- Benchmark against competitors in the same industry.
- Read the ratio together with others – profitability, liquidity and efficiency tell different stories.

### Common mistakes to avoid

- Using sales instead of cost of goods sold for inventory ratios.
- Mixing gross, operating and net profit.
- Ignoring one-off items that distort a single year.

### Inputs explained

FieldWhat to enterUnits soldA numberPrice per unitAmount in your currencyVariable cost per unitAmount in your currencyFixed costsAmount in your currencyExpected change in salesIn %

### What each result means

- **Contribution margin** = [Units sold]×([Price per unit] - [Variable cost per unit])
- **Operating income (EBIT)** = [Contribution margin] - [Fixed costs]
- **Degree of operating leverage** = [Contribution margin]÷[Operating income (EBIT)]
- **Expected change in EBIT** = [Degree of operating leverage]×[Expected change in sales]

### Example values

How the main result changes when **Units sold** changes and everything else stays at the example values above:

Units soldDegree of operating leverage10,000-415,000620,0002.6725,000230,0001.7140,0001.45

## Worked example

Inputs — Units sold: 20,000; Price per unit: $50; Variable cost per unit: $30; Fixed costs: $250,000; Expected change in sales: 10 %.

Results — Contribution margin = $400,000.00; Operating income (EBIT) = $150,000.00; **Degree of operating leverage = 2.67**; Expected change in EBIT = 26.67 %.

## FAQ

**What is a high degree of operating leverage?**
Above about 2–3 – profits swing strongly with sales.

**What causes high operating leverage?**
High fixed costs relative to variable costs.

**Is high operating leverage bad?**
It amplifies both gains and losses.

**What formula does the Degree of Operating Leverage Calculator use?**
DOL = contribution margin ÷ operating income = Q(P − V) ÷ (Q(P − V) − F).


## Sources

- [Corporate Finance Institute – financial ratios](https://corporatefinanceinstitute.com/)