Curtain Size Calculator
Estimate total curtain width and panel drop from window measurements.
How to use this calculator
- Select your measurement unit.
- Enter accurate measurements in every field.
- Choose any available calculation option.
- Press Calculate and review every result line.
Measurement tips
- Measure the installed rod where possible.
- Fullness of 1.5–2.5 is common.
- Check whether the product lists single-panel or pair width.
Important: This tool provides a planning estimate. Recheck critical measurements and follow product instructions, local codes or professional advice before buying, delivering or building.
Frequently asked questions
Can I use inches or feet?
Yes. Choose the unit before entering measurements. The calculator converts values internally and presents a clear result.
Why should I add a safety or waste margin?
Real spaces can include trim, uneven surfaces, packaging and measuring error. A small margin makes the estimate more practical.
Is the result a guarantee?
No. It is a planning estimate. Confirm dimensions at the narrowest points and check the exact product or construction requirements.
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