Free tool
Fabric Yardage Calculator
Pick what you are making, enter your measurements, and get a yardage estimate. Accounts for fabric type, bolt width, stretch, skill level, and pattern matching so you buy the right amount the first time.
Save your materials to a project
Costumary tracks your fabric, materials, budget, and timeline in one workspace. Start a build and never lose a shopping list again.
Start tracking your buildMore free tools for makers
Budget Calculator
Estimate your build cost before you start. Add materials, track spending, and stay on budget from first sketch to con floor.
Commission Pricing Calculator
Figure out what to charge. Factor in materials, labor hours, complexity, and overhead so you never underprice a commission again.
Prop Scaling Calculator
Scale any weapon, staff, or accessory to your height. Input the character's canon dimensions and your measurements, get cut-ready numbers.
Spray Paint Color Matcher
Upload a reference image or paste a hex code, then find close spray paint matches for props, helmets, 3D prints, and model kits.
Convention Packing Checklist
The packing list cosplayers actually use. Con essentials, repair kit, sewing survival, wig and makeup, and everything you forget until the parking lot.
Convention Budget Calculator
Know what your next con will actually cost. Badge, hotel, travel, food, and shopping breakdown with per-person split for groups.
Convention Profit Tracker
Was your show worth it? Estimate break-even before a craft fair, log actual sales after, and compare which shows actually make you money.
Cosplay Material Wizard
EVA foam, Worbla, or 3D printing? Answer 4 questions and get the right material with thickness guides, glue charts, and paint compatibility.
Carousel Composer
Drop your slide templates, overlay photos on each one, crop and rotate, then export everything as a zip. Runs in your browser, nothing uploaded.