68 tools · 100 guides · no sign-up
Small tools and clear guides, minus the fluff.
Free Tool Arena collects the calculators, converters, and how-tos you keep Googling — in one place, on one page each. Nothing runs behind the scenes. Nothing asks for your email.
Popular tools
All tools →Tool · Money & Finance
Tip Calculator
Free tip calculator. Enter the bill, pick a tip percent, split between any number of people. Works on mobile, no ads, instant results.
Tool · Money & Finance
Loan Calculator
Work out monthly payments and total interest on any loan. Enter amount, rate, and term — get a clear breakdown in seconds.
Tool · Money & Finance
Mortgage Calculator
Estimate your monthly mortgage payment, total interest, and payoff schedule. Free, fast, and mobile-friendly.
Tool · Money & Finance
Compound Interest Calculator
See how much your money grows with compound interest. Add starting balance, monthly contributions, and watch the curve.
Tool · Money & Finance
Savings Goal Calculator
Set a goal, a deadline, and see exactly how much to save each month. Plan a vacation, emergency fund, or down payment.
Tool · Money & Finance
Monthly Budget Calculator
Enter your income and expenses, see what's left, and spot where you can cut. A simple monthly budget calculator that works.
Popular guides
All guides →Guide · Money & Finance
How to Save Money Fast
Save money fast with 15 tactics that actually work: automate savings, cut three categories, raise your income floor. No gimmicks.
Guide · Money & Finance
The Best Side Hustles for Beginners
Honest side hustle list for beginners: what pays now, what takes months, what's a scam. Time vs money ranked.
Guide · Money & Finance
How to Start Investing With $100
A beginner walkthrough: pick a broker, buy a low-cost index fund, automate. What to avoid. Real numbers.
Guide · Money & Finance
How to Make a Monthly Budget
Build a monthly budget in 20 minutes. The 50/30/20 rule, zero-based, and how to pick what fits your life.
Guide · Money & Finance
How to Pay Off Debt Fast
Compare snowball and avalanche methods with real math. Which wins in dollars, which wins in momentum.
Guide · Money & Finance
How to Build Credit From Zero
Build a credit score from 0 to 700+ with simple moves: secured card, on-time payments, and what to avoid.
Browse by category
Money & Finance
Budget, loan, interest, and paycheck math — in seconds.
10 tools · 20 guides
Productivity
Timers, planners, and routines for focused work.
9 tools · 15 guides
File & Format Converters
PDFs, images, data formats — converted in your browser, offline-safe.
15 tools
Coding & Tech
Learn to code, ship your first project, land the dev job.
15 guides
Career & Growth
Interviews, résumés, promotions, and smart career moves.
10 guides
Health & Fitness
Quick calculators and plain-English habit guides.
6 tools · 15 guides
Home & Life
A calmer, cleaner, better-run home life — one habit at a time.
10 guides
Relationships & Social
Friendships, hard conversations, and social skills that travel.
5 guides
Developer Utilities
Formatters, generators, and regex tools for daily dev work.
10 tools
Random & Fun
Coin flips, dice, and decision makers when you just need an answer.
5 tools
Runs in your browser
Inputs never leave your device. No accounts, no tracking scripts, no cookie wall.
Written to be useful
Short, specific guides — the kind a friend would send you, not a 2,000-word intro.
Fast on any device
Static pages and tiny bundles. Works the same on a slow phone as a desktop.
Last reviewed end-to-end April 2026.