Justools
A free toolkit for everyday personal tasks and small-business work. Open a tool, finish the job, and download the result, private in your browser.
No signup. Core tools process in your browser.
Recently added for households and small businesses.
Calculate 18-year child rearing costs, category allocation, and multi-child expenses across 20 countries
Open tool →Calculate pay raise percentage, new salary, and 5-year cumulative trajectory
Open tool →Calculate year over year percentage growth, absolute change, and multi-year CAGR
Open tool →Calculate daily calorie deficit, TDEE, BMR, and macro splits for weight loss
Open tool →Return on ad spend, break-even ROAS, and net profit
Open tool →Extract text from images with OCR
Open tool →Log costs by date and category, then download Excel
Open tool →12-month planner plus downloadable Excel budget template
Open tool →Income, expenses, surplus, and CSV export
Open tool →Cut out subjects with AI in your browser
Open tool →Revenue, costs, tax, and net margin
Open tool →Common tasks people open first.
Combine PDFs in your browser
Open tool →Extract pages or split to ZIP
Open tool →Convert JPG, PNG, and WebP
Open tool →Create and scan QR codes
Open tool →Format and validate JSON
Open tool →City budgets for Australia, New Zealand, the UK, the US, Canada, Singapore, Taiwan, South Korea, Japan, and 11 European countries. Local currency by household.
Open tool →Built for people and small businesses who want a quick job done without installing software or creating an account.
Each page does one job well, with clear steps and FAQs when you need them.
Core tools are free, with clear limits and no account required.
Most file tools run in your browser. Your files are not uploaded to Justools servers for processing.
Browse personal or business tools, or read how we handle privacy.