CurtainCalc™ saves designers and curtain makers time and money when estimating or quoting for curtaining windows and doors.


Download now on the App Store™ for iPhone and iPad

or Play Store™ for Android™


✭✭✭✭✭ 5/5

“At last... a program that is useful and simple to use. Brilliant little app. Very useful on site and in showroom. Easy to use and excellent support.”

—AD, Interior Design Company Director, Lincoln UK

(Via email)

“Thank you so much, the app is great and I will be sure to spread the word about this super product!”

—DR, Interior Designer, Warwickshire UK

On site

Don't lose the interest generated in the heat of the moment – give an instant accurate estimate on site.

In the office

Work out accurate estimates or quotes. Provide different options in an instant.

Keep track

Email full estimate, fabric, quantities and a photo of the job to your chosen central email address back at base, build a record of all the quotes you have given out.

Don't waste time

Give an accurate estimate at the outset to weed out those with a different budget in mind… Concentrate on clients who appreciate the value of your time, services and products.

How CurtainCalc can help you

Designed by interior designers for interior designers, curtain makers and even individuals budgeting for a large make-over, CurtainCalc™ accepts basic input like fabric width, pattern repeat, fullness and price per meter, combines it with preset info such as your standard lining prices and curtain makers’ rates, then works out costs, quantities and labour in an instant.

CurtainCalc packages a complete estimate, allows you to add a photo of the window, customer details and contacts then emails it back to base for your records.


Use CurtainCalc straight out of the box or easily pre-configure your making rates for long, short, interlined, lined or unlined curtains. Add your standard materials costs for linings and interlinings and you're armed with a powerful tool for providing instant accurate quotes or estimates on site, whilst keeping the clients’ enthusiasm alive.


As professional interior designers ourselves we know that improving their home and living area, tailoring it to their tastes and making it individual to them is a tremendously exciting time for clients. Keep the excitement alive and take advantage of your clients' enthusiasm by providing a complete and accurate estimate or quote in an instant, during your first site visit.


CurtainCalc works in both metric (metres and cm) and imperial (yards and inches) units.

curtain making price calculator estimator for iPhone and Android

CurtainCalc works on
iPhone, iPad and Android devices.

Technical details

Who did this?

Purple Turnip™ are a family.

A diverse quartet, related by birth and lifetime commitment, who are frequently brought together despite almost insurmountable difficulty — 300 miles of the UK's first ever, longest and most perpetually dug­­-up 6 lane highway, the M1.


Inspired by the desire to bring some of the tools developed in-house and used every day in the running of a small Interior Design consultancy to the wider world, Purple Turnip was formed to produce easy to use, great looking apps that will save you time and money in your business.


Get in touch to find out more…

Email or fill in the form:

If you need help or tech support, please check out the on-line help before getting in touch. We've put a lot of work in to it, and It's dead easy to understand, honest!  CurtainCalc help page


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Stay updated.

We’ll tell you when there are important developments with CurtainCalc, and when an update or similar app is available.

a Purple Turnip™ app © 2016

Throughout the site, all trade marks and registered marks are acknowledged.

Google™ & mobile friendly web site by Kinetik™


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curtain making price calculator estimator for iPhone and Android

curtain making price calculator estimator for iPhone and Android