Free Online Tools for Everyone

Finance

Mortgage, EMI, compound interest, ROI, and tax calculators

30 tools

Business & Startup

SaaS runway, MRR projection, LTV, churn, and pricing tools

30 tools

Text Utilities

Word counter, case converter, JSON formatter, regex tester

29 tools

Unit & Conversion

Length, weight, temperature, currency, and timezone converters

30 tools

Creator & Social

Hashtag generator, UTM builder, QR code, SEO preview tools

26 tools

Image Tools

Compressor, resizer, color picker, format converter, gradient maker

30 tools

Legal & Documents

Invoice generator, NDA template, privacy policy, contracts

30 tools

Productivity

Pomodoro timer, decision matrix, meeting cost, planners

30 tools

Developer

UUID generator, JWT decoder, hash generator, cron builder

30 tools

Misc & Experimental

BMI calculator, AI prompt cost, sleep cycle, carbon footprint

30 tools

YouTube

Thumbnail downloader, tag extractor, earnings estimator, SEO tools

30 tools

CSV and JSON Data Transformation: Converting, Cleaning, and Validating

Learn when to use CSV versus JSON, how to convert between them cleanly, and how to avoid common data transformation pitfalls.

data dev-tools

7 min read

Resume Writing and Interview Prep: A Practical Playbook

Build a compelling resume with strong bullet points, prepare for interviews using the STAR method, and optimize your LinkedIn profile to attract opportunities.

productivity career

8 min read

Retirement Planning & the FIRE Movement: A Practical Guide

Learn how to plan for retirement and explore the FIRE movement with savings rate strategies, the 4% rule, and free calculators.

investing savings

8 min read

JSON Tools

Developer-friendly JSON tools: formatter, validator, JSON-to-CSV converter, diff viewer, and more. Free, runs in your browser.

7 tools

Text Tools

Transform text with free online tools: Base64 encoding, URL encoding, HTML entities, case conversion, binary conversion, and character counting.

8 tools

Essential Developer Tools

Essential developer utilities: JSON formatter, regex tester, UUID generator, password generator, hash tools, and Base64 decoder. Free, no sign-up.

8 tools

Color & Design Tools

Design with confidence using free color tools: palette generators, contrast checkers, hex-to-RGB converters, gradient builders, and color pickers.

7 tools

Loan & Debt Management Tools

Manage loans and debt with free calculators: EMI breakdowns, loan comparisons, credit card payoff planners, debt snowball trackers, and break-even analysis.

6 tools

Video Creator Toolkit

Tools for video creators: thumbnail downloaders, thumbnail makers, meme generators, embed code builders, description writers, and chapter generators.

6 tools