All calculators

High-commercial-intent tools, each with a full breakdown and a plain-English guide. Free, instant, no signup.

E-commerce

Seller fees, FBA costs, and true profit per sale.

Your real profit after every Shopify fee.

Margin and ROI after FBA + referral fees.

Your true profit after every Etsy fee.

Mortgages, loans, and payoff planning.

Monthly payment, interest, and amortization.

Payoff time and interest saved with extra payments.

Price your time so the math actually works.

The hourly rate your income goal really needs.