Fabric Calculator

Estimate how much fabric to buy for a project. Enter the width and height of one piece, how many you need, the fabric width and whether to add a seam allowance, and the tool works out how many pieces fit across the fabric, how many rows you need, and the fabric length and area to buy. This is an approximate estimate, not a quote — check the fabric width and any pattern repeat, and allow extra for shrinkage and matching. All processing runs locally in your browser. Your data is not uploaded to any server. 100% Local

How to Use the Fabric Calculator

Choose your units, enter the piece width and height and how many you need, then the fabric width. Tick Add seam allowance and enter the allowance per side if you want it included. Press Calculate fabric to see the length and area to buy.

What it accounts for

• Pieces are laid across the fabric width, so you get how many fit per row.
• Rows are rounded up, then multiplied by the piece height for the length.
• Seam allowance is added to both sides of each piece when ticked.

Getting a better number

Fabric is usually sold by length at a fixed width. If your pieces are directional or have a pattern repeat, lay them out on paper first and round up. Treat the result as an approximate estimate, not a quote.

Features

• Pieces per row, rows needed, and fabric length and area
• Optional seam allowance on every side
• Metric and imperial units
• Copy or download the estimate as a text file
• All processing runs locally in your browser. Your data is not uploaded to any server.
• Results are approximate estimates, not a quote. Check the fabric width, pattern repeat and shrinkage, and allow extra fabric for matching and mistakes.

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