Free online calculators & tools that just work.

Calculate monthly payments, total interest, and full amortization schedules for any loan — mortgage, auto, personal, or student.

Four modes: find X% of Y, what percent X is of Y, percentage change between two numbers, and percent-to-decimal conversion.

Calculate tip amounts and split bills between any number of people. Quick tip presets from 10–25% with service quality shortcuts.

See your real take-home pay after federal tax, state tax, Social Security, Medicare, and 401k deductions. All 50 US states supported.

Compare avalanche vs snowball debt payoff methods side by side. Enter multiple debts and see which method saves more interest and gets you debt-free sooner.

Which job actually pays more? Compare two offers after taxes, commute costs, and expenses to see the real take-home difference.

Calculate your Body Mass Index instantly. See your category, healthy weight range, and how much to lose or gain — with plain-English context, not just a number.

Compare the real annual fuel cost of a gas car versus an electric vehicle — or calculate costs for a single vehicle. Enter MPG, gas price, and kWh rate to see monthly and yearly savings.

Look up reliability by generation for Honda, Toyota, Lexus, Mazda and more. Calculate cost per remaining mile, find the mileage sweet spot, and compare up to 3 listings side by side before you buy.

See how your savings grow over time with compound interest. Enter your starting balance, monthly contributions, interest rate, and term to project your future balance.

Project your retirement nest egg based on current savings, monthly contributions, expected return, and retirement age. See if you're on track to retire when you want.

Live word, character, sentence, paragraph, and line counts as you type. Includes reading time estimates and top word frequency analysis.

Unscramble any set of letters to find all valid words. Great for Scrabble, Wordle, and word games. Filter by word length.

Find perfect, near, and ending rhymes for any word. Useful for songwriting, poetry, and creative writing.

Scramble words or phrases into random letter arrangements. Great for creating word puzzles and games.

Turn any phrase into an acronym, or generate creative word expansions for any set of initials.

Count characters in any text with limits for Twitter, Instagram, SMS, and more. Live counting as you type.

Generate character names for novels, screenplays, and games. Filter by nationality, era, and gender to find the perfect name for any character.

Build formulas for Excel, Google Sheets, or Google Docs instantly. Choose your app, pick a formula type, fill in your values, and get a ready-to-use formula with a plain-English explanation.

Convert CSV files to JSON and back instantly. Paste your data, get clean output. No file uploads, no accounts.

Translate text to Morse code and back, play audio beeps at adjustable speed, record microphone taps or tones to decode in real time, and tap Morse on screen. Visual display included.

Plan your full trip cost — flights, hotel, food, activities, and insurance. See your total and exactly how much to save per month to afford it.

Free step-by-step algebra, geometry, and trigonometry solver. Every step explained in plain English. No paywall, no sign-up — solving what Symbolab now charges for.

Powerball and Mega Millions frequency heat map, smart number generator, jackpot tax calculator, pool split, and check if your numbers ever would have won. Entertainment only.

Generate strong, random passwords with custom length, character sets, and complexity rules. All generation happens in your browser — nothing is transmitted or stored.

See exactly how much interest your credit card charges every single day. Enter your balance, APR, and due date to see daily accrual, total owed, and minimum vs full payment comparison.

Real break-even timeline for 200+ GPUs. Enter your electricity rate and GPU price — get daily, monthly, and yearly profit projections.

Find the best GPU, CPU, or RAM by value score. Benchmark-per-dollar ratings with live pricing. Stop switching tabs to compare specs.

Compare GPUs for local AI by VRAM, model fit, estimated tokens per second, power draw, and price so you can buy hardware that matches Ollama, LM Studio, and llama.cpp.