**Curtain width**: 120 inches, **Panels**: **2** (each 152.4 cm wide), **Rod**: 167.6 cm, this **curtain size calculator** to determine the **appropriate dimensions** for your curtains based on your **window measurements**.

This calculator takes into account factors such as **window width**, **desired fullness**, and **hanging style** to provide you with **accurate curtain measurements**.

The calculator typically requires input such as:

**Window width****Desired curtain fullness**(e.g.,**1.5x**,**2x**, or**2.5x**the window width)**Hanging style**(rod pocket, grommet, pinch pleat, etc.)

Using these inputs, the calculator provides outputs like:

**Curtain width**: The**total width**of fabric needed**Number of panels**: How many**individual curtain panels**you’ll need**Rod length**: The**recommended length**for your curtain rod

For example, let’s consider a window that is **60 inches** (152.4 cm) wide:

- With a fullness of
**2x**and a rod pocket style:**Curtain width**:**120 inches**(304.8 cm)**Number of panels**:**2**(each**60 inches**/ 152.4 cm wide)**Rod length**:**66 inches**(167.6 cm)

- With a fullness of
**2.5x**and a grommet style:**Curtain width**:**150 inches**(381 cm)**Number of panels**:**2**(each**75 inches**/ 190.5 cm wide)**Rod length**:**66 inches**(167.6 cm)

## Curtain Size Calculator

Window Width | Fullness Factor | Total Curtain Width | Panel Width (2 panels) | Rod Length | Conversion Equation |
---|---|---|---|---|---|

48 inches | 2x | 96 inches | 48 inches | 54-60 inches | 1 inch = 2.54 cm |

122 cm | 2x | 244 cm | 122 cm | 134-146 cm | 1 cm = 0.3937 inches |

60 inches | 2.5x | 150 inches | 75 inches | 66-72 inches | 1 inch = 2.54 cm |

200 cm | 1.5x | 300 cm | 150 cm | 212-224 cm | 1 cm = 0.3937 inches |

84 inches | 2x | 168 inches | 84 inches | 90-96 inches | 1 inch = 2.54 cm |

150 cm | 2.5x | 375 cm | 187.5 cm | 162-174 cm | 1 cm = 0.3937 inches |

**Related Tools:**

## Curtain Size Calculation Formula

The basic formula for calculating curtain size is:

**Curtain Width = Window Width × Fullness Factor**

Where:

**Window Width**is the measured width of your window**Fullness Factor**is the**desired fullness**of your curtains (typically**1.5 to 3**)

For example:

- For a
**72-inch**window with a fullness factor of**2**:**Curtain Width**=**72 × 2 = 144 inches**

- For a
**100 cm**window with a fullness factor of**2.5**:**Curtain Width**=**100 × 2.5 = 250 cm**

To determine the width of each panel, divide the **total curtain width** by the **number of panels** you want:

**Panel Width = Curtain Width ÷ Number of Panels**

For instance, if you want **two panels** for the **72-inch** window example:

**Panel Width**=**144 ÷ 2 = 72 inches per panel**

For curtain length, use this formula:

**Curtain Length = Desired Drop + Rod Height Above Window + Extra for Hanging Method**

Where:

**Desired Drop**is how far down you want the curtains to hang**Rod Height**is how high above the window the rod is placed**Extra for Hanging Method**accounts for additional fabric needed for the chosen hanging style

## How do you calculate curtain size?

To calculate curtain size:

**Measure your window width**: Use a**tape measure**to get the exact width of your window.**Determine desired fullness**: Choose a**fullness factor**(usually between**1.5 and 3**).**Calculate total curtain width**: Multiply**window width**by**fullness factor**.**Decide on number of panels**: Choose how many**panels**you want.**Calculate panel width**: Divide**total curtain width**by**number of panels**.**Measure for length**:- Measure from the rod to where you want curtains to end.
- Add
**extra length**for the hanging method (e.g., rod pocket, rings).

**Consider rod length**: Add**3-6 inches**on each side of the window width for**rod overhang**.

**Example**: For a **90-inch** window, **2x fullness**, floor-length curtains with a rod pocket:

**Total curtain width**:**90 × 2 = 180 inches****Two panels**:**180 ÷ 2 = 90 inches per panel****Length**:**96 inches**(8 feet from rod to floor) +**4 inches**for rod pocket =**100 inches**

## What size curtains for 180cm window?

For a **180 cm** window, the curtain size depends on your **desired fullness**. Here are calculations for different fullness factors:

**1.5x Fullness**:**Total curtain width**:**180 cm × 1.5 = 270 cm****Two panels**:**135 cm each**

**2x Fullness**(recommended for a**luxurious look**):**Total curtain width**:**180 cm × 2 = 360 cm****Two panels**:**180 cm each**

**2.5x Fullness**(for**maximum fullness**):**Total curtain width**:**180 cm × 2.5 = 450 cm****Two panels**:**225 cm each**

For length, measure from your curtain rod to where you want the curtains to end, and add extra for the **hanging method**.

## How wide should curtains be for a 36 inch window?

For a **36-inch** window, curtain width calculations are as follows:

**1.5x Fullness**(minimum recommended):**Total curtain width**:**36 × 1.5 = 54 inches****Two panels**:**27 inches each**

**2x Fullness**(standard):**Total curtain width**:**36 × 2 = 72 inches****Two panels**:**36 inches each**

**2.5x Fullness**(full):**Total curtain width**:**36 × 2.5 = 90 inches****Two panels**:**45 inches each**

Remember to choose a **curtain rod** that extends **3-6 inches** beyond each side of the window, so for a **36-inch** window, select a rod between **42-48 inches** long.

## What size curtains do I need for a 72 inch window?

For a **72-inch** window, here are the curtain size calculations:

**1.5x Fullness**:**Total curtain width**:**72 × 1.5 = 108 inches****Two panels**:**54 inches each**

**2x Fullness**(recommended):**Total curtain width**:**72 × 2 = 144 inches****Two panels**:**72 inches each**

**2.5x Fullness**(very full):**Total curtain width**:**72 × 2.5 = 180 inches****Two panels**:**90 inches each**

For the rod, choose a length between **78-84 inches** to allow for **proper overhang** on each side of the window.

## What size curtains for a 90 inch window?

For a **90-inch** window, consider these curtain size options:

**1.5x Fullness**:**Total curtain width**:**90 × 1.5 = 135 inches****Two panels**:**67.5 inches each**

**2x Fullness**(standard recommendation):**Total curtain width**:**90 × 2 = 180 inches****Two panels**:**90 inches each**

**2.5x Fullness**(maximum fullness):**Total curtain width**:**90 × 2.5 = 225 inches****Two panels**:**112.5 inches each**

Select a curtain rod between **96-102 inches** long to ensure **proper coverage** and **aesthetics**.