sewing Calculators
Fabric Yardage Calculator
Determines exactly how many yards of fabric to buy for any sewing project. Enter your project dimensions and the fabric's bolt width to avoid costly over- or under-buying.
Seam Allowance Calculator
Calculates the cut fabric dimensions you need to achieve a specific finished size after sewing. Essential when drafting patterns or adjusting pieces to account for the fabric consumed by seams.
Bias Tape Length Calculator
Figures out exactly how much bias tape or binding you need to finish the edges of any fabric project. Accounts for perimeter length, corner mitering, and a working buffer so you never run short.
Quilt Backing Calculator
Calculates how many yards of backing fabric to buy for a quilt, factoring in the overhang needed for longarm quilting or stretching on a frame. Saves trips back to the fabric store.
Buttonhole Spacing Calculator
Calculates the exact center-to-center spacing between buttonholes on a garment placket for perfectly even results. Use it whenever you are adding buttons to shirts, cardigans, or any faced opening.
Fabric Gathering Calculator
Determines how much flat fabric you need to cut before gathering it down to a finished ruffled or shirred length. Use it when making ruffles, skirts, or curtain hems.
Hem Allowance Calculator
Calculates the total fabric length you need to cut, factoring in your chosen hem depth and top seam allowance. Ideal for skirts, trousers, curtains, or any project where precise cutting matters.
Zipper Length Calculator
Finds the right zipper length to buy for your sewing project based on opening size and zipper type. Use it before shopping to avoid buying a zipper that is too short to install properly.
Elastic Length Calculator
Calculates the cut length of elastic for waistbands, cuffs, and casings so it fits snugly without twisting or cutting in. Use it any time you are setting elastic into a garment.
Pattern Scaling Calculator
Calculates scaled pattern dimensions when you need to resize a sewing pattern up or down by a percentage. Use it when printing patterns at a non-standard scale or grading between sizes.
Fabric Yardage Calculator
Estimates the total yards of fabric needed for a sewing project based on garment type, size, and fabric width. Use it before buying fabric to avoid running short or over-purchasing.
Quilt Fabric Calculator
Calculates the yards of fabric needed for a quilt's backing and binding based on finished dimensions, batting overhang, and binding strip width. Ideal for quilters planning a new project before visiting the fabric store.
Seam Allowance & Cutting Calculator
Computes the cutting dimensions of a fabric piece by adding seam and hem allowances to your desired finished size. Use it whenever you need to cut fabric accurately from a custom or self-drafted pattern.
Sewing Time Estimator
Estimates the total hours needed to complete a sewing project based on project type, skill level, pattern complexity, and preparation time. Helpful for scheduling projects or quoting time for commission work.
Buttonhole Spacing Calculator
Calculates the even spacing between buttonholes along a garment placket given the placket length, number of buttons, and top and bottom margins. Use it when constructing shirts, coats, or any garment with a button band.
Bias Tape Calculator
Find exactly how much fabric you need to cut continuous bias tape or binding for quilts, garments, and crafts. Enter your desired tape length, strip width, and fabric width to get precise yardage.
Elastic Length Calculator
Calculate the exact elastic length for waistbands, sleeve cuffs, and casings so garments fit snugly without distortion. Accounts for body measurement, elastic type, seam allowance, and desired gathering.
Thread Consumption Calculator
Estimate how many yards of thread a sewing project will consume based on seam length, stitch length, and waste allowance. Ideal for budgeting thread before starting garments or large batch production.
Pattern Grading Calculator
Determine how much to shift each grading point on a sewing pattern when adjusting from one size to another. Use it when resizing commercial patterns or custom blocks to match specific body measurements.
Interfacing Yardage Calculator
Calculate the yardage of interfacing needed to stabilize garment pieces like collars, cuffs, and facings. Enter your garment type, size factor, interfacing width, and any extra pieces to get a total yardage estimate.
Fabric Yardage Calculator
Determine exactly how many yards of fabric to buy for any sewing project. Enter your pattern dimensions, fabric width, and number of pieces to avoid under-buying or costly waste.
Quilt Batting Size Calculator
Find the exact batting dimensions needed for your quilt, accounting for quilting overhang and binding width. Use this before purchasing batting to avoid seams or short edges.
Seam Allowance Fabric Calculator
Calculate how much extra fabric you need when changing the seam allowance from what a pattern specifies. Essential when adapting European (1 cm) patterns to US (5/8 inch) standards, or vice versa.
Fabric Gathering Ratio Calculator
Calculate the pre-gathered fabric length needed to achieve the right fullness for ruffles, skirt hems, and sleeves. Accounts for gathering ratio, fabric drape, and hem allowances.
Interfacing Yardage Calculator
Estimate how many yards of interfacing to buy for a garment's collars, cuffs, facings, and button bands. Enter your garment size, interfacing width, and number of extra pieces for an accurate total.
Quilt Backing Calculator
Determines how many yards of backing fabric to buy for any quilt, accounting for overhang, piecing seams, and pre-wash shrinkage. Use it before shopping to avoid running short.
Zipper Length Calculator
Finds the correct zipper length to order for any garment opening, factoring in stop allowances and seam allowances. Use it when sewing a dress, skirt, or bag to avoid buying the wrong size.
Pattern Ease Calculator
Calculates the total pattern measurement — body measurement plus wearing ease and design ease — so your sewn garment fits correctly. Use it when drafting or grading a sewing pattern.
Quilt Backing Calculator
Calculates the number of fabric panels needed to back a quilt of any size, including overhang and a 1-inch seam buffer per panel. Use it when planning backing layout before cutting fabric.
Thread Consumption Calculator
Estimates the total thread needed in feet for any seam by combining seam length, stitch density, and a waste allowance. Use it before starting a project to check whether your spool has enough thread.
Pattern Grading Calculator
Calculates new pattern measurements when grading a sewing pattern up or down between sizes. Use it when resizing a commercial pattern to fit a different size without redrawing every piece from scratch.
Fabric Shrinkage Calculator
Calculates how many extra yards of fabric to purchase to account for shrinkage when pre-washing before sewing. Essential when working with natural fibers like cotton or linen that shrink significantly.