Flawless Drapery Yardage in Seconds. Not Hours.

The fail-safe workroom calculator built exclusively for US interior designers & drapery workrooms. Stop doing math, avoid costly fabric mistakes, and generate professional spec sheets instantly.

No credit card required. Cancel anytime.

Drapery Calculator

Enter your window specifications.

Drapery Panels
Roman Shades

1. Window Dimensions

100
96

2. Fabric Specifications

54"
24.5"

PROVEN USE CASES ACROSS THE US

How professionals use DraperyFlow

"Caught a $1,200 vertical repeat error before ordering fabric."

Interior Design Studio

Interior Design Studio

Texas

"Workroom now receives crystal-clear PDF spec sheets instead of handwritten notes."

Independent Workroom

Independent Workroom

Fabrication Partner

"Reduced per-window calculation time from 40 minutes to under 1 minute."

Interior Architecture

Interior Architecture

Florida

One math error can cost you your entire markup.

Wasted Money

Ordered 2 yards less of that expensive silk? Pay for the replacement and shipping directly from your own pocket.

Wasted Time

Spending 40 minutes calculating just one window because of a complex vertical repeat and railroaded fabric? Time is money.

Workroom Confusion

Seamstress calling you three times a day because they can't decode your handwritten notes or missing hardware counts?

Show, Don't Tell.

Which spec sheet do you want to send to your workroom? Look like the professional you are.

Before

Living Room Drop

Window: 100" ?

Fabric: 54", Rep: 24.5"

Length: 96 + 10 + 8 = 114?

14 yards?

Wait, maybe 16.5 yds??

Call Mary at the workroom to check.

With DraperyFlow

Specification Sheet

TreatmentFrench Pleat (3-Finger)
Dimensions100" W x 96" L
Vertical Repeat24.5"

Required Face Fabric

16.5 Yards

Built for interior designers & workrooms.

The "Fail-Safe" Calculator

Supports Drapery Panels & Roman Shades. Automatically calculates repeats, hems, and technical allowances strictly to US workroom standards.

Workroom-Ready PDFs

Generate beautiful, print-ready Work Orders in one click. Never send a confusing email or a messy napkin sketch again.

100% White-Label

Upload your studio logo, add detailed notes, and attach window or fabric photos. It’s YOUR professional document.

Priced less than half a yard of basic lining.

Simple, transparent pricing. Invest in your professionalism.

Pro Plan

$39/ month
  • Unlimited Projects & Calculations
  • Drapery & Roman Shades Logic
  • Custom Logo PDF Export
  • Hardware Estimation included
  • Project Photo Uploads

14 days free. Cancel anytime.

Frequently Asked Questions

Yes, specific calculation logic for Flat Roman Shades, including side hems and vertical allowances (board + weight bar), is built directly into the app.

Start your first spec sheet in 90 seconds.

Stop second-guessing your yardage. Start your 14-day free trial today and generate your first professional spec sheet in minutes.