Hobby and Craft

  • Vinyl / HTV Material Calculator
    Calculate how much vinyl or heat transfer vinyl (HTV) you need for your cuts. Enter design size, quantity, roll width and waste to get length in inches and feet.
  • Golden Ratio Design Calculator
    Split any total length into golden-ratio proportions (φ ≈ 1.618). Get the larger and smaller segments instantly for design, layout and typography.
  • Cut Fabric Size Calculator (Add Seam Allowance)
    Calculate the cut fabric size by adding seam allowance to your finished dimensions. Enter finished width, length, and seam allowance per edge.
  • Macrame Cord Length Calculator
    Calculate how much macrame cord to cut for your project. Enter finished length, number of cords, and a 4–6× multiplier to get total cord needed.
  • Buttonhole Spacing Calculator
    Calculate even buttonhole spacing for shirts, plackets and garments. Enter length, end margins and button count to get exact center-to-center spacing.
  • Knitting Cast-On Stitches Calculator
    Calculate how many stitches to cast on from your knitting gauge (stitches per 4 inches) and the finished width of your project. Add optional edge stitches.
  • Soap Lye Calculator
    Calculate the exact grams of NaOH lye and water needed for cold-process soap from your oil weight, SAP value, superfat percentage and water ratio.
  • Diamond Painting Drill Count Calculator
    Estimate how many diamond painting drills you need from your canvas size and drill coverage. Calculates total drills, grid cells and bags.
  • Resin Mold Volume Calculator
    Calculate how much resin you need to fill a mold by length, width, depth and fill level. Get volume in mL/L and resin weight in grams.
  • Candle Wax Calculator
    Calculate how much candle wax and fragrance oil you need for any batch. Enter container size, quantity, and fragrance load to plan your pour.
  • WPI Yarn Weight Calculator
    Calculate wraps per inch (WPI) and identify your yarn weight category (lace, fingering, DK, worsted, bulky) from wraps and measured length.
  • Knitting Yarn Yardage Calculator
    Estimate how much yarn and how many skeins you need for your knitting project. Enter dimensions, yards per square inch, and skein length.
  • Crochet Foundation Chain Calculator
    Calculate how many foundation chain stitches to make for any crochet project from your desired width, gauge (stitches per inch), and turning chains.
  • Diamond Carat Calculator
    Estimate the carat weight of a round brilliant diamond from its diameter and depth in millimeters using the standard carat weight formula.
  • Carat Weight Calculator
    Convert between carats and grams instantly. Uses the metric carat (1 ct = 0.2 g = 200 mg) to find gemstone and diamond weight.
  • Salt Dough Calculator
    Calculate the exact flour, salt and water for salt dough using the classic 2:1:1 ratio. Scale up for multiple batches and get total dough weight.
  • NaNoWriMo Word Count Calculator
    Calculate how many words per day you need to win NaNoWriMo. Enter words written, days left, and your goal to stay on pace for 50,000 words.
  • Diamond Weight Calculator
    Estimate a round brilliant diamond's weight in carats from its diameter and depth in millimeters using the standard industry formula.
  • Nether Portal Calculator
    Convert Minecraft coordinates between the Overworld and Nether (1:8 ratio) to perfectly link your portals. Find where to build the paired portal.
  • Minecraft Stack Calculator
    Convert any item count into full Minecraft stacks plus leftovers. Supports 64, 16, and 1 stack sizes. Instantly see stacks and remainder.
  • Delay and Reverb Time Calculator
    Calculate delay and reverb time in milliseconds from your song's BPM and note value. Get straight, dotted, and triplet delay times plus the matching frequency.
  • Time Lapse Calculator
    Calculate time-lapse clip length, total frames and shooting time from your interval and playback frame rate. Free, instant photography planner.
  • Shutter Speed Calculator
    Calculate a new shutter speed from EV changes, aperture and ISO stops using reciprocity. Get the equivalent 1/x fraction instantly for photography.
  • Pixels to Print Size Calculator
    Convert image pixel dimensions to print size in inches and centimeters at a chosen DPI/PPI. Find the largest quality print your photo can make.

Categories