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.
Etsy Profit Calculator
Reverse-Fee Pricing
Know exactly what to charge to hit your desired profit goals.
No accounts. No spreadsheets. 100% Mobile Friendly.
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.