Craft Calculators

Calculate precise NaOH and water amounts for cold-process soap. Supports superfat percentage and water:lye ratio adjustments.

Calculate safe fragrance oil amounts based on IFRA guidelines and your total batch weight.

Find the right wick size for your candle based on container diameter, wax type, and fragrance load.

Calculate the Hydrophilic-Lipophilic Balance for emulsion formulations (lotions, creams, balms).

Estimate cold-process soap cure time based on water content, recipe hardness, and environmental factors.

Calculate reduced water amounts for faster unmolding and shorter cure times in cold-process soap.

Calculate oil-water emulsion ratios for lotions and creams. Determines emulsifier amounts by HLB value and oil phase percentage.

Calculate safe essential oil dilution ratios by carrier oil volume, application type, and user group. Follows IFRA safety guidelines.

Calculate alcohol by volume from original and final gravity readings for beer, wine, and mead.

Calculate International Bitterness Units for hop additions using the Tinseth method. Includes BU:GU balance ratio, utilization breakdown, hop stand and dry hop estimates, and BJCP style matching. For full multi-addition recipes, try the Build a Beer calculator.

Estimate beer color in SRM from grain bill and batch volume.

Convert between Brix, specific gravity, and potential alcohol for winemaking and brewing.

Calculate potassium metabisulfite additions to achieve target free SO₂ levels in wine.

Calculate tartaric acid additions to reach target TA or pH in wine and cider.

Calculate precise blend ratios for tea, coffee, and spice mixes by weight percentage. Scale any blend to your target batch size.

Calculate salt brine concentration by weight for pickling, fermentation, and curing. Supports salt, sugar, and mixed brines.

Calculate Prague powder #1 and #2 dosages for meat curing. Ensures safe nitrite levels within USDA guidelines.

Calculate rennet dosage by milk volume, rennet type, and target coagulation time for cheesemaking.

Get precise chocolate tempering temperatures for dark, milk, white, and ruby chocolate. Shows melt, cool, and working temps.

Calculate the blended Scoville heat level when combining multiple pepper varieties. Design your perfect heat profile.

Calculate pectin dosage by fruit type, sugar ratio, and batch size for jams, jellies, and preserves.

Estimate coffee roast weight loss by green weight and roast level. Calculate finished weight and approximate cup yield.

Calculate water addition to reduce spirit proof. Enter current ABV/volume and target ABV to get exact water needed.

Convert between US proof, UK proof (Sikes), ABV%, and Gay-Lussac degrees. Includes spirit blending calculator.

Predict final product weight from raw ingredients after cooking, baking, dehydrating, or fermenting losses.

Convert a glaze recipe from percentages to unity molecular formula (UMF) for glaze chemistry analysis.

Calculate final dimensions of ceramic pieces accounting for clay body shrinkage through drying and firing.

Check coefficient of expansion compatibility between glass types to prevent cracking.

Calculate annealing soak time and cooling schedule based on glass thickness and type.

Calculate glaze and clay mix component weights from percentage recipes. Includes water ratio for dipping consistency.

Calculate lumber volume in board feet from dimensions. Essential for pricing and material estimation.

Calculate the weight of metal stock from dimensions and material type.

Calculate total yardage needed for a project based on gauge, dimensions, and stitch pattern.

Calculate dye amounts based on weight of goods (WOG) and desired depth of shade.

Calculate thread and yarn quantities for knitting, crochet, embroidery, and cross-stitch projects by dimensions and stitch density.

Calculate cord length for macramé projects by knot type, project size, and fringe length. Never run short mid-project.

Calculate fabric yardage by garment type, size, fabric width, and pattern repeat. Accounts for nap and one-way prints.

Estimate screen print ink amounts by design area, mesh count, and print run size.

Calculate wool roving strip quantities for rug hooking by project area and pile height.

Calculate optimal twist-per-inch by fiber type and desired yarn weight for hand spinning.

Calculate weaving warp length accounting for loom waste, take-up, shrinkage, and sampling length.

Calculate stitch count, spacing, and thread requirements for embroidery and cross-stitch by fabric count and design dimensions.

Estimate 3D print time by model dimensions, layer height, infill percentage, and print speed.

Estimate 3D printing filament weight and cost by model volume, infill, and material type. Know your cost per print.

Calculate ring blank dimensions and weight by finger size, band width, and metal gauge. Essential for jewelry fabrication.

Quick reference for metal melting points and casting temperatures by alloy. Includes flask and pour temperature recommendations.

Convert between AWG, SWG, and metric wire sizes. Calculate weight per length for jewelry wire by metal type.

Estimate usable hide area accounting for grade, defects, and grain matching. Calculate how many pieces you can cut.

Calculate leather dye volume by surface area, leather type, and number of coats. Avoid running short mid-project.

Calculate custom soil and potting mix ratios by plant type. Get exact amounts for peat, perlite, compost, and amendments.

Calculate calories, protein, and fat per pet treat. Check if daily treat intake stays within recommended limits.

Scale pet treat recipes up or down by target yield. Get exact ingredient amounts for any batch size.

Estimate candle melt pool time and hot throw by container diameter, wax type, and wick size.

Calculate concentrate dilution ratios for homemade cleaning products. Know exactly how many bottles one concentrate makes.

Calculate seasonal wood expansion and contraction by species, grain orientation, and humidity range. Essential for joinery.

Calculate finish volume needed by surface area, product type, application method, and number of coats.

Calculate resin and hardener amounts for molds by shape and dimensions. Supports multiple mix ratios for 2-part systems.

Convert between paper GSM and basis weight. Estimate ream weight and thickness for any sheet size.

Calculate signatures, sheets, and spine width for bookbinding. Supports perfect, case, saddle stitch, and coptic binding.

Calculate incense ingredient ratios by type — stick, cone, loose, or trail. Get exact amounts for base, aromatics, and binder.

Estimate candle burn time by type, dimensions, and wax for ritual and ceremonial use. Covers tapers, pillars, and votives.

Calculate stem counts for floral arrangements by vase size and style. Breaks down focal, secondary, filler, and greenery stems.

Estimate dried flower dimensions, color retention, and drying time by species and drying method.