All Categories
Browse 13 categories of free online tools.
Tax Calculators
Income tax, self-employment tax, sales tax, and more for individuals and businesses.
27 toolsPayroll Calculators
Paycheck estimators, employer cost calculators, and overtime tools.
22 toolsPricing Calculators
Markup, margin, hourly rate, and project pricing tools.
13 toolsBusiness Planning
Break-even analysis, startup cost estimators, and ROI calculators.
19 toolsFreelancer Tools
Rate calculators, invoice generators, and time tracking tools for freelancers.
9 toolsE-Commerce Calculators
FBA fees, shipping cost, profit margin, and dropshipping calculators.
10 toolsReal Estate Calculators
Mortgage, rental yield, property tax, and closing cost calculators.
9 toolsAI Economy Tools
AI cost calculators, ROI tools, and job impact analyzers.
20 toolsAI Agency Tools
Pricing, profitability, and client ROI tools for AI agencies.
20 toolsFile Converters
Convert documents, images, audio, video, and data files in your browser.
234 toolsReference & Conversion
Unit converters, currency tools, and quick reference utilities.
18 toolsDeveloper Tools
Color converters, encoders, generators, and utilities for developers.
34 toolsInvestment Calculators
Compound interest, ROI, retirement savings, and investment growth tools.
4 toolsStart from Topic Hubs
Topic hubs chain related tools together so you can complete full workflows with fewer dead ends.
Tax and Payroll Optimization Hub
Paycheck, withholding, tax planning, and reimbursement workflows for recurring money operations.
Business and AI Economics Hub
Cost, ROI, and automation decision workflows for AI adoption and growth planning.
Conversion and Data Pipelines Hub
High-demand document, media, and data conversion flows for repeat utility usage.
Freelancer Unit Economics Hub
Pricing, margin, tax, and workload tools for independent operators.