Resin, Quilt, Fabric, Candle & Yarn Calculators
Free craft calculators with the maths shown: resin pours, quilt backing/batting/binding, fabric yardage, cross-stitch size, candle wax, yarn, and gauge.
Every craft has a "how much do I need" question, and every one of them is arithmetic on a measurement. These tools do the sum the way the guild, the supplier or the pattern designer would, show the rule they used, and give a table you can plan from next time.
Quilting and sewing covers backing, batting, binding and yardage. Yarn and stitching covers blankets, gauge and cross-stitch fabric. Resin and candles covers pours and batches.
Quilting & sewing
Backing yardage for any quilt top with the fewest seams, on 42-inch or 108-inch wide backing, plus the batting size that fits and binding yardage.
Fabric yardageHow many yards of fabric for a number of cut pieces, with seam allowance and best cutting orientation, and for curtains from rod width and fullness.
Yarn & stitching
Finished design size and fabric to cut for any stitch count on 11-22 count Aida or evenweave over two, with a framing margin and a chart per count.
Yarn for a blanketHow much yarn for a blanket of any size, in yards, metres and skeins, by yarn weight, knit or crochet, and stitch pattern, for every standard size.
Gauge adjustmentAdjust any knitting or crochet pattern to your swatch: new cast-on and row counts from pattern gauge vs yours, and which way to change needle size.
Resin & candles
How much epoxy resin you need for a flood coat, river table or mold, from dimensions and depth, in oz, ml and grams, split Part A/B for 1:1, 2:1, 3:1.
Candle wax & fragranceWax and fragrance oil by weight for a batch of container candles or wax melts, from container size, count, wax type, with max load for each wax.
Frequently Asked Questions
Where do the numbers come from?
The rules crafters already use by hand: resin volume is area times depth, quilt backing is the top plus four inches of overhang pieced across the fabric width, fabric yardage is pieces per width-of-fabric row, cross-stitch size is stitches divided by count, candle wax is container volume times a fill factor with fragrance as a share of wax weight, yarn is yards per square inch by weight, and gauge adjustment is a ratio. Each page states its rule and shows a table so you can check the result or work without the calculator.
Are these exact?
They are the standard estimates, and materials vary. Resins have their own mix ratios and depth limits, waxes their own fragrance ceilings, and no two crocheters use the same amount of yarn. Follow the label, swatch where a swatch is possible, and buy a little over. Running short of a dye lot or a resin kit mid-project is the expensive mistake.
Do I need an account, and is anything saved?
No account, nothing saved. Every calculation runs in your browser and nothing you type is sent anywhere.