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

SaaS Metrics Masterclass: The Numbers Every Founder Needs

Track MRR, churn, burn rate, and runway with free SaaS calculators built for founders and operators.

startup analytics

9 min read

Markdown Formatting Cheat Sheet: Syntax, Tips, and Common Patterns

Master Markdown syntax for headings, lists, links, images, code blocks, and tables with practical examples and formatting tips.

encoding data

6 min read

Instagram and TikTok Growth: Strategies That Actually Work

Grow your Instagram and TikTok presence with practical strategies for hashtags, engagement rates, bio optimization, and platform-specific content tactics.

social-media content

8 min read

YouTube Tools

Grow your YouTube channel with free tools for SEO analysis, keyword research, earnings estimates, thumbnail testing, and channel audits.

8 tools

JSON Tools

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

7 tools

SEO Tools

Improve your search rankings with free SEO tools: meta tag previews, keyword analysis, SERP snippets, robots.txt generators, and Open Graph checkers.

8 tools

Health Calculators

Track your health with free calculators: BMI, daily calorie needs, macro breakdown, water intake, body fat percentage, and sleep cycle planning.

7 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

Budget & Expense Tracking

Track budgets and split expenses: personal budget trackers, expense splitters, trip cost estimators, meeting cost calculators, and event budget planners.

6 tools