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Browse our complete collection of free online calculators and tools for unit conversion, finance, gaming, education, and business.
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11 tools
11 tools
Operational tools for selling, marketplace fees, pricing, and planning.
Business Name Numerology Calculator
Compute numerology totals for business names using Pythagorean, Chaldean, or Kabbalah systems.
Home Construction Cost Calculator
Estimate construction costs with quality, location, floors, and contingency.
eBay Fee Calculator
Calculate eBay seller fees including Final Value Fee, payment processing, and find optimal pricing.
Amazon FBA Calculator
Calculate Amazon referral fees, FBA fulfillment costs, and profit margins for FBA sellers.
Etsy Fee Calculator
Calculate Etsy listing fees, transaction fees, and payment processing for handmade sellers.
PayPal Fee Calculator
Calculate PayPal transaction fees and reverse calculate how much to request to receive a specific amount.
Poshmark Fee Calculator
Calculate Poshmark seller fees and earnings. Simple $2.95 or 20% fee structure.
Mercari Fee Calculator
Calculate Mercari selling fees (10%) and estimate your earnings from sales.
Bonanza Fee Calculator
Calculate Bonanza Final Offer Value fees across 4 advertising tiers (3.5% to 30%).
eBay Motors Fee Calculator
Calculate eBay Motors success fees for vehicles, motorcycles, and parts sales.
eBay UK Fee Calculator
Calculate eBay UK seller fees in GBP across 69 categories with store subscriptions.