Fabric Calculator | Advanced Yardage & Cost Estimator

Global Settings

Units Switch changes how inputs are interpreted and how totals are displayed.

Fabric width

Common widths are 45 in / 54 in or 110 cm / 140 cm.

Seam allowance in (applied on all sides)

Pattern repeat in (optional) If > 0, piece length rounds up to the nearest repeat.

Shrinkage %

Waste %

Pricing

Currency symbol

Price per unit

Unit

Line Items

Item	Piece width	Piece length	Qty	Across	Rows	Length needed

Fields assume current unit: inches

Results

No results yet. Add items and click Calculate.

Example Data

sample

Item	Piece width	Piece length	Qty
Curtain panel	26	92	4
Cushion cover	20	20	6
Table runner	16	72	2

Tip: Click “Load example data” in Global Settings to populate the line items with the above values.

Formulas used

Adjusted dimensions per piece
w' = w + 2 × SA and l' = l + 2 × SA
where w and l are piece width and length; SA is seam allowance.
Pattern repeat (optional)
If repeat > 0, l'' = ceil(l' / R) × R where R is pattern repeat.
Shrinkage
l_s = l'' × (1 + S/100) where S is shrinkage percent.
Nesting across the fabric width
across = max(1, floor(FW / w')) where FW is fabric width.
Rows and length per item
rows = ceil(qty / across), len_item = rows × l_s
Total length and waste
L_total = (Σ len_item) × (1 + W/100) where W is waste percent.
Unit conversions
Imperial: yards = L_total / 36. Metric: meters = L_total / 100.
Cost
Cost = price_per_unit × total_length_in_that_unit

Assumptions: Pieces are rectangular, oriented with width across the fabric width. Seam allowance applied on all sides. Pattern matching rounds up piece length only.