Free tools
Calculators and generators for freelancers and small businesses. No sign-up, and everything runs in your browser.
24 tools, all free
VAT calculator
Add or remove VAT, get net and gross instantly.
Loan calculator
Monthly payment, total interest and amortization.
Email signature generator
Clean HTML signature, ready to paste into any inbox.
Percentage calculator
Percent of, percent change, or reverse a percentage.
Case converter
camelCase, snake_case, kebab-case, PascalCase and more.
Color picker
Pick any color and copy its HEX, RGB and HSL codes.
JSON formatter
Format, validate and minify JSON instantly.
Unit converter
Length, weight, temperature, area, volume and speed.
hotInvoice generator
Create a professional invoice in seconds, no account.
Break-even calculator
Units and revenue needed to cover your fixed costs.
Freelance tax estimator
Quarterly tax estimates for self-employed workers.
Profit margin calculator
Cost, price, markup and margin in one place.
Word counter
Words, characters, sentences and reading time.
Contrast checker
WCAG AA and AAA contrast ratio for any two colors.
QR code generator
Turn any link or text into a scannable QR code.
Password generator
Strong, random, customizable passwords.
Freelance hourly rate calculator
Find the minimum rate you need to charge as a freelancer.
Upwork fee calculator
Estimate your take-home pay after Upwork's service fee.
PayPal fee calculator
See what you'll receive after PayPal's Goods & Services or Friends & Family fees.
Stripe fee calculator
See what you'll receive after Stripe's processing fees and surcharges.
Payroll cost calculator
Find the true cost of hiring someone, beyond just the salary.
ROI calculator
Return on investment, payback period and annualized ROI.
Quote generator
Create a professional quote or estimate and download it as PDF.
Markup calculator
Selling price, profit and margin from cost and markup — single or multiple items.