Free craft calculators for quilting, sewing, crochet, and maker projects.
MakerMath provides simple calculators designed to help quilters, crocheters, and makers plan their projects more easily. These tools help estimate measurements such as quilt backing, binding, borders, yarn yardage, stitch counts, and project sizing so you can focus on creating instead of doing the math.
Use the calculator directory below to quickly find tools for:
• quilting fabric calculations
• crochet stitch and yarn estimates
• sewing measurements and seam allowances
• cross stitch fabric sizing
• craft pricing and project planning
Whether you’re planning a quilt layout, calculating yarn for a crochet project, or determining the right starting chain, these calculators make it easier to estimate materials and avoid mistakes before starting your project.
Browse calculators for quilting, crochet, cross stitch, pattern sizing, and craft measurement conversions below.
New craft calculators and reference charts are added regularly.
Ad SpaceQuilting Calculators
Calculate how much backing fabric you need for your quilt based on width, length, and extra inches for quilting and trimming.
Quilt Binding Calculator
Determine how many binding strips you need and the total binding length required for finishing your quilt.
Quilt Border Calculator
Easily calculate border sizes and fabric requirements to frame your quilt evenly.
Quilt Batting Calculator
Estimate the batting size needed for a quilt based on quilt dimensions and extra margin for quilting.
Quilt Block Layout Calculator
Estimate how many quilt blocks are required for a quilt based on quilt size and block dimensions.
Quilt Binding Strip Calculator
Calculate how many fabric strips are needed to create quilt binding based on quilt size and fabric width.
Fabric Yardage Calculator
Estimate how many yards of fabric are needed for sewing or quilting projects based on project size and fabric width.
Quilt Sashing Calculator
Estimate the total length of quilt sashing needed based on quilt width and length.
Quilt Cornerstone Calculator
Calculate how many cornerstones are needed when adding sashing between quilt blocks.
Quilt Block Size Calculator
Determine the finished quilt block size needed to fit a specific quilt width and layout.
Crochet Calculators
Crochet Chain Length Calculator
Determine the correct starting chain length based on gauge and project width.
Crochet Stitch Counter Calculator
Estimate how many stitches are needed for a crochet project based on project width and stitch gauge.
Granny Square Blanket Calculator
Estimate how many granny squares you need to make a crochet blanket in your desired size.
Crochet Gauge Calculator
Adjust stitch counts based on your crochet gauge to ensure your project reaches the correct finished size.
Crochet Border Stitch Calculator
Estimate how many stitches are needed when adding a crochet border around a blanket or project.
Crochet Blanket Size Calculator
Estimate the number of stitches and rows needed to crochet a blanket based on project size and gauge.
Crochet Yarn Yardage Calculator
Estimate how much yarn is required for a crochet project based on project size and yarn usage rate.
Crochet Increase Calculator
Calculate how many stitches to increase per row when shaping a crochet project.
Crochet Decrease Calculator
Calculate how many stitches to decrease per row when shaping a crochet project.
Pattern & Sizing Calculators
Pattern Resize Calculator
Resize a pattern proportionally by calculating the correct dimensions when increasing or decreasing pattern size.
Seam Allowance Calculator
Calculate fabric cut sizes instantly with this free seam allowance calculator. Perfect for sewing projects, quilting, and garment patterns.
Cross Stitch/Embroidery Calculators
Cross Stitch Fabric Size Calculator
Calculate the finished size of a cross stitch design based on stitch count and fabric count.
Cross Stitch Fabric Margin Calculator
Calculate how much fabric is needed for a cross stitch project when adding extra margin for framing or finishing.
Cross Stitch/Embroidery Hoop Size Calculator
Estimate the recommended embroidery hoop size needed to fit a design with extra margin for proper hoop placement.
Cross Stitch Thread Length Calculator
Estimate how much embroidery thread is needed for a cross stitch project based on stitch count and thread usage per stitch.
Conversion Charts
Inches to Yards Conversion Chart
Quickly convert inches to yards using this simple chart designed for quilting, sewing, and fabric calculations.
Inches to Centimeters Conversion Chart
Convert inches to centimeters using this quick reference chart for quilting, sewing, and craft measurements.
Quilt Block Size Conversion Chart
Convert common quilt block sizes from inches to centimeters using this quick reference chart for quilting projects.
Yards to Meters Conversion Chart
Convert fabric measurements from yards to meters using this quick reference chart for quilting and sewing projects.
Yarn Weight Conversion Chart
Compare yarn weight names used in the US, UK, and Australia with this simple yarn weight conversion chart for knitting and crochet projects.
Crochet Hook Size Conversion Chart
Compare crochet hook sizes across metric, US, and UK/Canada systems using this quick reference chart for crochet projects.
Millimeters to Inches Conversion Chart
Quickly convert millimeters to inches using this simple conversion chart for sewing, quilting, and craft measurements.
Craft Business Calculators
Handmade Pricing Calculator
Calculate suggested selling prices for handmade items based on materials, labor, overhead, and profit margin.
Craft Show Profit Calculator
Estimate profit from a craft fair or market by comparing total sales with booth fees, material costs, and other expenses.
More calculators for quilters, crocheters, and makers are being added regularly.
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