Free Online Tools for Freelancers
Essential calculators and tools for freelancers — estimate income tax, convert hourly rates to annual salary, generate invoices, and calculate profit margins. All free, no sign-up required.
No sign-up · No data sent to servers · Instant results
Sponsored · We may earn a commission at no cost to you
Hourly to Salary Calculator
Convert hourly wage to annual salary with tax estimates and overtime
Use tool →Income Tax Calculator
Estimate US federal income tax with brackets, FICA, and take-home pay
Use tool →Margin Calculator
Calculate profit margin, markup, and selling price with batch analysis and industry benchmarks
Use tool →Profit Margin Calculator
Calculate gross and net profit margins with markup comparison
Use tool →Salary Calculator
Convert salary between hourly, weekly, monthly, and annual with tax estimates
Use tool →Tax Bracket Calculator
See which tax brackets your income falls into with effective rate
Use tool →CSS Unit Converter
Convert between px, rem, em, pt, and other CSS units
Use tool →URL Encoder/Decoder
Encode and decode URL strings
Use tool →Invoice Generator
Create professional invoices and download as PDF
Use tool →Slug Generator
Convert text to URL-friendly slugs
Use tool →Frequently Asked Questions
What tools does NexTool offer for freelancers?▾
NexTool provides free tools tailored for freelancers including income tax estimators, hourly-to-salary converters, invoice generators, profit margin calculators, and self-employment tax calculators. All tools run in your browser with no account required.
Can I generate professional invoices for free?▾
Yes. Our invoice generator lets you create clean, professional invoices with your business details, line items, taxes, and payment terms. You can download them as PDF and send to clients immediately.
How do I calculate my freelance tax obligations?▾
Use our income tax calculator and self-employment tax calculator to estimate your federal and state tax obligations. Enter your expected income and deductions to see what you may owe, including self-employment tax (Social Security and Medicare).
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