Cross-listers
Marketplace Fee Comparison Calculator
Run one sale through Etsy, eBay, Mercari, and Poshmark before you decide where it belongs.
For reseller, flipping, and marketplace comparison conversations.Free Web Toolbox
Useful tools, one card at a time.
Free calculators, fee checkers, converters, planners, and browser utilities that solve real search-driven problems.
Popular starting points
Free calculators people already search for
Start with fast answers for seller fees, creator pricing, borrowing costs, mortgage payments, and debt payoff plans.
Creators
UGC Usage Rights Calculator
Price paid usage, whitelisting, exclusivity, and renewal rights before a campaign goes live.
For creator pricing threads and brand deal questions.Etsy sellers
Etsy Fee Calculator
Estimate marketplace, listing, payment, and transaction costs before setting a product price.
For Etsy pricing, handmade business, and side-hustle conversations.eBay sellers
eBay Fee Calculator
Estimate final value fees on price, shipping, and tax before you cross-list or accept an offer.
For reseller, flipping, and marketplace-fee conversations.Poshmark sellers
Poshmark Fee Calculator
Check the under-$15 flat fee and standard 20% commission before pricing an item.
For fashion resale and closet-cleanout conversations.Freelancers
PayPal Fee Calculator
See how much a PayPal payment leaves after fees before sending the invoice.
For contractor, invoicing, and small business posts.Online businesses
Stripe Fee Calculator
Estimate card processing fees and net revenue for one-time or recurring payments.
For SaaS, ecommerce, and checkout-pricing discussions.TikTok creators
TikTok Brand Deal Rate Calculator
Turn audience size and engagement into a practical starting range for sponsored content.
For creator economy, influencer pricing, and campaign planning posts.Mercari sellers
Mercari Fee Calculator
Estimate the 10% seller fee on item price plus buyer-paid shipping before you list.
For reseller and marketplace comparison posts.Borrowers
APR Calculator
Compare true APR from amount financed, payment, and term before accepting a loan offer.
For auto, personal loan, and credit comparison questions.Home shoppers
Mortgage Calculator
Estimate payment, taxes, insurance, and PMI before stretching a monthly budget.
For homebuying, affordability, and rate-watch conversations.Start here
Revenue-focused tool hubs
8 tools
Seller and Creator Money Calculators
Free calculators for usage rights, marketplace fees, payment fees, APR checks, and payment planning.
Marketplace Comparison / UGC Usage Rights / Etsy Fees / eBay Fees8 tools
Fee Calculators
Payment, platform, and marketplace fee calculators for sellers, creators, freelancers, and subscription businesses.
Marketplace Comparison / Etsy Fees / eBay Fees / Poshmark Fees8 tools
Creator Revenue Calculators
Calculators for creators pricing sponsorships, subscriptions, affiliate content, and video revenue.
Brand Deal Rate / UGC Usage Rights / YouTube RPM / Substack Revenue8 tools
Ecommerce Seller Calculators
Marketplace and ecommerce calculators for fees, margins, ads, break-even pricing, and product profit.
Marketplace Comparison / Etsy Fees / eBay Fees / Poshmark Fees8 tools
Business Calculators
Pricing, payment, revenue, ROAS, payroll, invoice, and sales calculators for small businesses and operators.
PayPal Fees / Stripe Fees / Break-Even / ROAS8 tools
File Compression Tools
Browser-based tools for compressing images, gzip files, bundling ZIP archives, and preparing smaller uploads.
Image Compressor / Bulk Images / File Compressor / Bulk GzipDirectory
Browse the highest-value tools first
Ecommerce
Marketplace Fee Comparison Calculator
Compare estimated seller fees and take-home across Etsy, eBay, Mercari, and Poshmark before you cross-list an item.
Ecommerce
Etsy Fee Calculator
Estimate Etsy listing, transaction, payment-processing, and optional Offsite Ads fees before you publish a price.
Social
UGC Usage Rights Calculator
Estimate UGC usage-rights pricing for paid social, whitelisting or Spark Ads, website or email reuse, renewals, raw footage, and exclusivity.
Business
PayPal Fee Calculator
Calculate PayPal fees, net payout, and the amount to request if you want to receive a target net amount.
Business
Stripe Fee Calculator
Estimate Stripe fees for domestic cards, then layer in manual-entry, international-card, and currency-conversion add-ons.
Money
Mortgage Calculator
Estimate monthly mortgage payment with principal, interest, taxes, insurance, PMI, and HOA.
Social
TikTok Brand Deal Rate Calculator
Estimate a fair sponsored TikTok post rate from followers, average views, niche, deliverables, usage rights, and exclusivity.
Money
APR Calculator
Estimate annual percentage rate from loan amount, note rate, upfront fees, and repayment term.
Home
Rent Increase Calculator
Calculate new rent, dollar change, and annual impact from a percentage increase or target rent.
Media
Image Compressor
Compress one image locally with quality, size, and output-format controls.
Media
Bulk Image Compressor
Compress multiple images locally and download the results together as a ZIP archive.
Tech
File Compressor
Compress one selected file with browser-supported gzip or deflate streams.
Tech
Bulk Gzip File Compressor
Gzip multiple selected files locally, then download the compressed set as a ZIP archive.
Writing
Substack Revenue Calculator
Estimate monthly-equivalent Substack revenue after Substack's platform fee, Stripe card fees, and Stripe Billing for recurring subscriptions.
Tech
Gzip File Compressor
Compress one file into a downloadable .gz file in the browser.
Media
Patreon Net Revenue Calculator
Estimate Patreon take-home after the standard platform fee, payment processing, and optional currency-conversion drag.
Tech
ZIP File Maker
Bundle selected files into a downloadable ZIP archive without uploading them to a server.
Commerce
TikTok Shop Commission Calculator
Estimate TikTok Shop affiliate commission after conversion rate, refund rate, and sample costs.
Writing
AI Prompt Builder
Turn one plain goal sentence into a detailed, structured prompt using guided pickers and a free AI model.
Video
YouTube RPM Revenue Calculator
Estimate YouTube revenue from views, RPM, Shorts mix, and sponsorship add-ons.
Money
Mortgage Affordability Snapshot
Estimate a home price range from income, debt, down payment, and rate.
Money
Rent vs Buy Calculator
Compare monthly renting with estimated homeownership costs and break-even time.
Work
Invoice Late Fee Calculator
Calculate an invoice late fee from balance, annual rate, grace period, and days overdue.
Money
Paycheck Take-Home Estimator
Estimate take-home pay from salary, pay frequency, pretax deductions, and a simple tax assumption.
Commerce
Etsy Profit Calculator
Estimate Etsy product profit after materials, shipping, platform fee estimate, and ad cost.
Ecommerce
Shopify Profit Calculator
Estimate product profit after costs and fees.
Business
Break-Even Calculator
Calculate how many units you need to sell to break even after fixed costs and variable costs.
Work
Freelance Hourly Rate Calculator
Calculate a sustainable freelance hourly rate from income goal, billable hours, taxes, and expenses.
Ecommerce
Amazon FBA Profit Snapshot
Estimate Amazon product profit after fees.
Ecommerce
Poshmark Fee Calculator
Calculate Poshmark seller fees and payout on sales under $15 or standard 20% commission sales over $15.
Ecommerce
eBay Fee Calculator
Estimate eBay final value fees, the per-order charge, and your payout after cost of goods on a typical sale.
Ecommerce
Shopify Profit Margin Calculator
Calculate Shopify profit margin after costs and fees.
Ecommerce
Mercari Fee Calculator
Estimate Mercari seller fees on item price plus buyer-paid shipping and see your payout after item cost.
Ecommerce
Amazon Profit Margin Calculator
Calculate Amazon profit margin after costs and fees.
Ecommerce
Etsy Profit Margin Calculator
Calculate Etsy profit margin after costs and fees.
Business
ROAS Calculator
Calculate return on ad spend.
Business
SaaS MRR Calculator
Calculate monthly recurring revenue.
Business
Sales Commission Calculator
Calculate sales commission.
Ecommerce
Average Order Value Calculator
Calculate average order value.
Ecommerce
TikTok Shop Profit Margin Calculator
Calculate TikTok Shop profit margin after costs and fees.
Ecommerce
TikTok Shop Break Even Price Calculator
Estimate the break-even price for TikTok Shop after costs and fees.
Ecommerce
Etsy Ads ROAS Calculator
Calculate return on ad spend.
Ecommerce
Etsy Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Ecommerce
Shopify Break Even Price Calculator
Estimate the break-even price for Shopify after costs and fees.
Ecommerce
Amazon Break Even Price Calculator
Estimate the break-even price for Amazon after costs and fees.
Ecommerce
Etsy Break Even Price Calculator
Estimate the break-even price for Etsy after costs and fees.
Ecommerce
eBay Profit Margin Calculator
Calculate eBay profit margin after costs and fees.
Ecommerce
eBay Break Even Price Calculator
Estimate the break-even price for eBay after costs and fees.
Ecommerce
Walmart Marketplace Profit Margin Calculator
Calculate Walmart Marketplace profit margin after costs and fees.
Ecommerce
Walmart Marketplace Break Even Price Calculator
Estimate the break-even price for Walmart Marketplace after costs and fees.
Ecommerce
Facebook Marketplace Profit Margin Calculator
Calculate Facebook Marketplace profit margin after costs and fees.
Ecommerce
Facebook Marketplace Break Even Price Calculator
Estimate the break-even price for Facebook Marketplace after costs and fees.
Ecommerce
Instagram Shop Profit Margin Calculator
Calculate Instagram Shop profit margin after costs and fees.
Ecommerce
Instagram Shop Break Even Price Calculator
Estimate the break-even price for Instagram Shop after costs and fees.
Ecommerce
WooCommerce Profit Margin Calculator
Calculate WooCommerce profit margin after costs and fees.
Ecommerce
WooCommerce Break Even Price Calculator
Estimate the break-even price for WooCommerce after costs and fees.
Ecommerce
BigCommerce Profit Margin Calculator
Calculate BigCommerce profit margin after costs and fees.
Ecommerce
BigCommerce Break Even Price Calculator
Estimate the break-even price for BigCommerce after costs and fees.
Ecommerce
Poshmark Profit Margin Calculator
Calculate Poshmark profit margin after costs and fees.
Ecommerce
Poshmark Break Even Price Calculator
Estimate the break-even price for Poshmark after costs and fees.
Ecommerce
Mercari Profit Margin Calculator
Calculate Mercari profit margin after costs and fees.
Ecommerce
Mercari Break Even Price Calculator
Estimate the break-even price for Mercari after costs and fees.
Ecommerce
Depop Profit Margin Calculator
Calculate Depop profit margin after costs and fees.
Ecommerce
Depop Break Even Price Calculator
Estimate the break-even price for Depop after costs and fees.
Ecommerce
Faire Profit Margin Calculator
Calculate Faire profit margin after costs and fees.
Ecommerce
Faire Break Even Price Calculator
Estimate the break-even price for Faire after costs and fees.
Ecommerce
Gumroad Profit Margin Calculator
Calculate Gumroad profit margin after costs and fees.
Ecommerce
Gumroad Break Even Price Calculator
Estimate the break-even price for Gumroad after costs and fees.
Ecommerce
Patreon Profit Margin Calculator
Calculate Patreon profit margin after costs and fees.
Ecommerce
Patreon Break Even Price Calculator
Estimate the break-even price for Patreon after costs and fees.
Ecommerce
Substack Profit Margin Calculator
Calculate Substack profit margin after costs and fees.
Ecommerce
Substack Break Even Price Calculator
Estimate the break-even price for Substack after costs and fees.
Ecommerce
Kajabi Profit Margin Calculator
Calculate Kajabi profit margin after costs and fees.
Ecommerce
Kajabi Break Even Price Calculator
Estimate the break-even price for Kajabi after costs and fees.
Ecommerce
Teachable Profit Margin Calculator
Calculate Teachable profit margin after costs and fees.
Ecommerce
Teachable Break Even Price Calculator
Estimate the break-even price for Teachable after costs and fees.
Ecommerce
Stan Store Profit Margin Calculator
Calculate Stan Store profit margin after costs and fees.
Ecommerce
Stan Store Break Even Price Calculator
Estimate the break-even price for Stan Store after costs and fees.
Ecommerce
Etsy Shop Name Generator
Generate Etsy shop names from product style, materials, audience, and maker story.
Ecommerce
Etsy Ads CTR Calculator
Calculate click-through rate from impressions and clicks.
Ecommerce
Etsy Ads CPM Calculator
Calculate cost per thousand impressions.
Ecommerce
Etsy Ads CPC Calculator
Calculate cost per click.
Ecommerce
Etsy Ads CPA Calculator
Calculate cost per action or conversion.
Ecommerce
Etsy Ads Conversion Rate Calculator
Calculate conversion rate from clicks and conversions.
Ecommerce
Etsy Ads Lead Cost Calculator
Calculate cost per lead.
Ecommerce
Etsy Ads Engagement Rate Calculator
Calculate engagement rate from reach and interactions.
Ecommerce
Etsy Ads Follower Growth Rate Calculator
Calculate follower or subscriber growth rate.
Money
Credit Card Payoff Calculator
Estimate payoff time from balance, APR, and monthly payment.
Money
Loan Payment Calculator
Estimate a monthly loan payment.
Money
Car Payment Calculator
Estimate an auto loan payment.
Money
Debt Extra Payment Savings Calculator
Estimate how much extra payments increase monthly debt paydown.
Money
House Down Payment Savings Calculator
Calculate the monthly savings needed for a house down payment goal.
Money
Car Down Payment Savings Calculator
Calculate the monthly savings needed for a car down payment goal.
Video
YouTube Ads ROAS Calculator
Calculate return on ad spend.
Video
YouTube Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Video
YouTube Short ROAS Calculator
Calculate return on ad spend.
Video
YouTube Short Revenue Per Click Calculator
Calculate revenue generated per click.
Ecommerce
Print On Demand Profit Calculator
Estimate profit per product.
Ecommerce
Amazon Ads ROAS Calculator
Calculate return on ad spend.
Ecommerce
Amazon Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Ecommerce
Shopify Ads ROAS Calculator
Calculate return on ad spend.
Ecommerce
Shopify Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Business
Gross Margin Calculator
Calculate gross margin.
Business
Landing Page Revenue Calculator
Estimate revenue from landing-page traffic.
Business
Break Even ROAS Calculator
Calculate break-even return on ad spend from margin.
Business
Google Ads ROAS Calculator
Calculate return on ad spend.
Business
Google Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Business
Meta Ads ROAS Calculator
Calculate return on ad spend.
Business
Meta Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Business
LinkedIn Ads ROAS Calculator
Calculate return on ad spend.
Business
LinkedIn Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Business
Reddit Ads ROAS Calculator
Calculate return on ad spend.
Business
Reddit Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Business
Landing Page ROAS Calculator
Calculate return on ad spend.
Business
Landing Page Revenue Per Click Calculator
Calculate revenue generated per click.
Money
Annual Salary to Hourly Rate Calculator
Convert annual salary into an hourly rate.
Money
Hourly to Annual Salary Calculator
Estimate annual salary from hourly pay.
Money
Side Hustle Profit Calculator
Estimate side-hustle profit after costs and taxes.
Money
Ad RPM Revenue Calculator
Estimate ad revenue from pageviews and RPM.
Travel
Luggage Fee Budget Calculator
Estimate total and per-person budget for luggage fee planning.
Events
Birthday Party Cost Calculator
Estimate birthday party cost from guests, unit cost, and service fees.
Events
Baby Shower Cost Calculator
Estimate baby shower cost from guests, unit cost, and service fees.
Events
Bridal Shower Cost Calculator
Estimate bridal shower cost from guests, unit cost, and service fees.
Events
Graduation Party Cost Calculator
Estimate graduation party cost from guests, unit cost, and service fees.
Events
Retirement Party Cost Calculator
Estimate retirement party cost from guests, unit cost, and service fees.
Events
Corporate Lunch Cost Calculator
Estimate corporate lunch cost from guests, unit cost, and service fees.
Events
Workshop Cost Calculator
Estimate workshop cost from guests, unit cost, and service fees.
Events
Fundraiser Cost Calculator
Estimate fundraiser cost from guests, unit cost, and service fees.
Events
Church Event Cost Calculator
Estimate church event cost from guests, unit cost, and service fees.
Events
School Event Cost Calculator
Estimate school event cost from guests, unit cost, and service fees.
Events
Community Meetup Cost Calculator
Estimate community meetup cost from guests, unit cost, and service fees.
Events
Photo Booth Cost Calculator
Estimate photo booth cost from guests, unit cost, and service fees.
Events
DJ Cost Calculator
Estimate dj cost from guests, unit cost, and service fees.
Events
Balloon Arch Cost Calculator
Estimate balloon arch cost from guests, unit cost, and service fees.
Events
Dessert Table Cost Calculator
Estimate dessert table cost from guests, unit cost, and service fees.
Events
Open Bar Cost Calculator
Estimate open bar cost from guests, unit cost, and service fees.
Events
Buffet Cost Calculator
Estimate buffet cost from guests, unit cost, and service fees.
Events
Food Truck Cost Calculator
Estimate food truck cost from guests, unit cost, and service fees.
Events
Venue Rental Cost Calculator
Estimate venue rental cost from guests, unit cost, and service fees.
Events
Event Staffing Cost Calculator
Estimate event staffing cost from guests, unit cost, and service fees.
Social
Podcast Download Revenue Calculator
Estimate ad revenue from podcast downloads.
Social
TikTok Ads ROAS Calculator
Calculate return on ad spend.
Social
TikTok Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Snapchat Ads ROAS Calculator
Calculate return on ad spend.
Social
Snapchat Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Social
X Ads ROAS Calculator
Calculate return on ad spend.
Social
X Ads Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Instagram Reel ROAS Calculator
Calculate return on ad spend.
Social
Instagram Reel Revenue Per Click Calculator
Calculate revenue generated per click.
Social
TikTok Video ROAS Calculator
Calculate return on ad spend.
Social
TikTok Video Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Facebook Post ROAS Calculator
Calculate return on ad spend.
Social
Facebook Post Revenue Per Click Calculator
Calculate revenue generated per click.
Social
LinkedIn Post ROAS Calculator
Calculate return on ad spend.
Social
LinkedIn Post Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Newsletter ROAS Calculator
Calculate return on ad spend.
Social
Newsletter Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Podcast ROAS Calculator
Calculate return on ad spend.
Social
Podcast Revenue Per Click Calculator
Calculate revenue generated per click.
Social
Twitch Stream ROAS Calculator
Calculate return on ad spend.
A searchable library of free browser-based tools with polished standalone pages, practical calculators, and utility workflows people actually search for. Find online calculators, unit converters, social media calculators, home project estimators, business profit tools, school planners, career calculators, health reference tools, writing utilities, developer tools, and everyday planning helpers. Each tool is designed to open quickly, work in the browser, and give a clear answer without extra setup.