Fast, Practical Calculators for Every Maker.
Stop guessing your margins and material needs. Get precise results for resin, candles, and 3D prints in seconds.
Resin Volume Calculator
Zero-Waste Resin Pours
Calculate precise volume for river tables and deep-pour projects.
Candle Wax Calculator
Perfect Scent Ratios
Get the exact wax-to-fragrance weight for stable, safe burns.
3D Print Cost Calculator
Professional Print Margins
Track filament, electricity, and machine wear in one view.
Tumbler Cost Calculator
Custom Tumbler Pricing
Calculate total cost and sell price for custom epoxy tumblers.
Etsy Profit Calculator
Reverse-Fee Pricing
Know exactly what to charge to hit your desired profit goals.
Wax Melt Calculator
Clamshell Batch Math
Calculate wax and fragrance for wax melt clamshells with batch costing.
Craft Show Profit Calculator
Show-Day Profit Check
Calculate if a craft show is worth doing before you commit.
Amazon Handmade Fee Calculator
Reverse-Fee Pricing
Calculate Amazon Handmade fees and set profitable listing prices.
Candle Wick Size Calculator
Perfect Wick Sizing
Find the right wick series for your container diameter, wax type, and fragrance load.
Sublimation Pricing Calculator
True Cost Per Item
Calculate substrate, ink, paper, and labor costs to price sublimation products for profit.
DTF Printing Cost Calculator
Cost Per Transfer
Calculate film, ink, powder, and labor costs for DTF transfers.
Embroidery Pricing Calculator
Stitch-Based Pricing
Calculate thread, stabilizer, and machine time costs for embroidery work.
Laser Engraving Cost Calculator
Cost Per Engrave
Calculate material, energy, depreciation, and labor for laser projects.
Heat Press Cost Calculator
Per-Garment Pricing
Calculate costs for HTV, sublimation, and DTF heat press projects.
Fragrance Oil Calculator
Precise Scent Amounts
Calculate exact fragrance oil amounts and costs for candle and wax melt batches.
UV Resin Calculator
Cost Per Piece
Calculate UV resin usage and cost per piece for jewelry and charms.
Tie Dye Calculator
Dye & Supply Math
Calculate dye bottles, soda ash, and supply costs for tie dye batches.
Jesmonite Calculator
Mix Ratio Math
Calculate jesmonite base powder and liquid amounts for casting projects.
Shrink Plastic Calculator
Pre-Shrink Sizing
Calculate pre-shrink design dimensions and pieces per sheet.
Craft Concrete Calculator
Mold Volume to Bags
Calculate concrete mix amounts for planters, coasters, and candle holders.
Cricut Cost Calculator
Per-Project Pricing
Calculate vinyl, transfer tape, and labor costs for Cricut projects.
Print on Demand Calculator
Multi-Platform Profit
Calculate profit after production costs and platform fees across Etsy, Shopify, and Amazon.
No accounts. No spreadsheets. 100% Mobile Friendly.
About MakersMath
MakersMath is built for makers, crafters, and small business sellers who need fast material and margin math to stay profitable. Our free precision calculators replace spreadsheets with one-tap inputs so you can plan pours, wax loads, print runs, and Etsy pricing without creating an account.
Frequently Asked Questions
How do I calculate epoxy resin volume for a river table?
To calculate epoxy resin volume, multiply the length, width, and average depth of your pour area in inches, then divide the total by 1.805 to convert to fluid ounces. We recommend adding a 5% waste buffer to account for material lost in mixing containers during the deep-pour process.
What is the standard fragrance load for soy wax candles?
The standard fragrance load for soy wax is 10% of the total wax weight. To calculate this accurately, multiply your container volume by the specific gravity of wax (0.86), then multiply that weight by your desired fragrance percentage to prevent oil seepage or safety issues.
How do I calculate the actual cost of a 3D print in 2026?
Calculate 3D print costs by totaling your filament usage (grams used / spool size * cost), local electricity rates (hours * wattage / 1000 * kWh price), and machine depreciation. Accurate pricing must include a 10% failure buffer to cover support material and potential print errors.
How much does Etsy charge in fees for 2026?
Etsy's 2026 fee structure includes a $0.20 listing fee, a 6.5% transaction fee, and a payment processing fee of 3% plus $0.25. To maintain a 30% profit margin, use a 'Reverse-Fee' formula that accounts for these deductions before setting your final customer-facing retail price.