ToolSMAWhat's my IP?All tools

41 free tools · no sign-up

Free online tools that are fast, simple & private

Calculators, converters and generators for money, health, text, code and design — everything runs instantly in your browser.

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Network & Privacy

What Is My IP?Find your public IP address and what it reveals about you: your internet provider, approximate location, hostname and DNS resolver. It also checks for WebRTC leaks and timezone or language mismatches that can give away a VPN or proxy.DNS Leak TestFind out which DNS servers handle your internet lookups. If you use a VPN and see your own internet provider's servers here, your DNS is leaking — and your ISP can see every website you visit.

Finance Calculators

Mortgage CalculatorEstimate your monthly mortgage repayment, the total interest you will pay and how your balance falls over time. Enter the property price, deposit, interest rate and term to see a clear breakdown and a printable month-by-month amortization schedule.Loan CalculatorWork out the monthly payment for any fixed-rate loan — personal loans, car finance, student loans or business loans. See the total interest and total amount repaid before you borrow, and compare terms side by side.Rent vs Buy CalculatorIs it cheaper to rent or to buy? Compare the total cost of both options over the years you plan to stay, including mortgage interest, maintenance, property growth, rent increases and what your deposit could earn if invested instead.Currency ConverterConvert money between the world's major currencies using reference exchange rates published daily by the European Central Bank. Swap currencies with one click and see the rate in both directions.Discount CalculatorFind the final price after a percentage discount and see exactly how much you save. Add a second discount to calculate stacked offers such as "extra 10% off sale prices", and include sales tax to see the real checkout price.Tip CalculatorWork out the tip and each person's share of the bill in seconds. Pick a tip percentage, choose how many people are paying and optionally round each share up to a whole amount.Compound Interest CalculatorProject how an initial deposit plus regular contributions grows over time with compound interest. Compare compounding frequencies and see how much of your final balance comes from interest rather than your own deposits.

Math Calculators

Basic CalculatorA fast, distraction-free calculator for everyday arithmetic. Use your mouse or keyboard, see your recent calculations and copy results with one click.Percentage CalculatorSolve every common percentage question in one place — what is X% of Y, X is what percent of Y, percentage increase or decrease, and the percentage difference between two values. Results update as you type.Random Number GeneratorPick random numbers between any minimum and maximum. Generate a single number or a whole list, with or without duplicates — perfect for raffles, games, sampling and lottery picks.GPA CalculatorAdd your courses, grades and credit hours to calculate your GPA on the standard 4.0 scale. Include your previous cumulative GPA to see your updated overall average.

Health & Fitness

BMI CalculatorFind your Body Mass Index from your height and weight, see which World Health Organization category it falls into and the healthy weight range for your height. Works in kilograms/centimetres or pounds/feet.Water Intake CalculatorEstimate your daily water needs from your body weight, how much you exercise and how hot your climate is. Get a clear target in litres, fluid ounces and glasses.Calorie CalculatorEstimate how many calories your body burns each day and how many to eat to lose, maintain or gain weight. Uses the Mifflin-St Jeor equation, considered the most accurate for most adults.

Unit Converters

Length ConverterConvert any length or distance between metric and imperial units. Type a value and see it in every unit at once — from millimetres to miles and nautical miles.Weight ConverterConvert between metric and imperial units of weight and mass. See kilograms, pounds, ounces, stones, grams and tonnes side by side.Temperature ConverterConvert temperatures between Celsius, Fahrenheit, Kelvin and Rankine. Type in any field and the others update instantly.Area ConverterConvert land and floor area between metric and imperial units — square metres, square feet, acres, hectares and more.Volume ConverterConvert liquid and dry volume between metric, US customary and UK imperial units — ideal for cooking, fuel and science.Speed ConverterConvert speed and velocity between km/h, mph, m/s, ft/s, knots and Mach.

Text Tools

Word & Character CounterPaste or type your text to instantly count words, characters, sentences and paragraphs. See estimated reading and speaking time and the most frequent keywords — ideal for essays, social posts and SEO meta tags.Case ConverterChange the capitalization of any text with one click: uppercase, lowercase, title case, sentence case, and programmer formats like camelCase, snake_case and kebab-case.Lorem Ipsum GeneratorCreate filler text for designs, mockups and templates. Choose how many paragraphs, sentences or words you need and copy the result as plain text or HTML.

Developer Tools

JSON Formatter & ValidatorPaste JSON to pretty-print it with your choice of indentation, validate it with precise error locations, or minify it for production. Optionally sort keys alphabetically.Base64 Encoder / DecoderConvert text to Base64 and back with full Unicode (UTF-8) support. You can also turn any file or image into a Base64 data URI for embedding in HTML or CSS.URL Encoder / DecoderPercent-encode special characters so text can be safely placed in a URL, or decode an encoded URL back into readable text. Also parses query parameters into a table.UUID GeneratorCreate universally unique identifiers for databases, APIs and testing. Generate up to 1,000 at once in UUID v4 (random) or v7 (timestamp-ordered) format.Hash GeneratorCompute cryptographic hashes of any text or file to verify downloads, compare data or generate checksums. All hashing is done in your browser.

Security Tools

Password GeneratorCreate strong, unique passwords or memorable passphrases in one click. Control the length and character types, avoid look-alike characters, and see the password's strength instantly.Password Strength CheckerCheck how resistant your password is to guessing and brute-force attacks. See its entropy, an estimated time to crack and practical suggestions — all computed privately in your browser.

Image & Design Tools

QR Code GeneratorGenerate QR codes for websites, plain text, Wi-Fi networks, email, phone numbers and SMS. Customize colors, size and error correction, then download a high-resolution PNG or scalable SVG.Image Color PickerPick exact colors from any photo, screenshot or logo. Click a pixel to get its HEX, RGB and HSL values, and automatically extract the image's dominant color palette.Color Palette GeneratorPick a base color to generate harmonious palettes based on color theory — complementary, analogous, triadic, split-complementary and tetradic — along with a full scale of tints and shades and WCAG contrast checks.Favicon GeneratorTurn a logo, image, letter or emoji into every favicon and app icon size a modern website needs — plus ready-to-paste HTML tags. Everything is generated in your browser and downloaded as one ZIP.Image CompressorShrink image file sizes for faster websites, email and uploads. Compress multiple images at once, resize them, and convert to modern WebP — without your files ever leaving your device.

Date & Everyday Tools

Date Difference CalculatorFind exactly how much time lies between two dates in years, months, weeks and days, count working days, or add and subtract days from a date to find a deadline.Age CalculatorEnter a date of birth to find the exact age in years, months and days, total days lived, the countdown to the next birthday, and the day of the week the person was born.Time Zone ConverterConvert a date and time from one time zone to several others at once. Daylight saving time is applied automatically using your browser's up-to-date IANA time zone database.Dice RollerRoll one or many virtual dice for board games, tabletop RPGs and classroom activities. Supports all standard dice, modifiers and dice notation like 2d6+3.

100% free

No sign-up, no paywalls, no usage limits.

Private by design

Tools run in your browser — your data never leaves your device.

Instant results

Lightweight pages that load fast on any device.

About ToolSMA

ToolSMA is a growing collection of free online tools designed to make everyday tasks quicker. Whether you need to estimate a mortgage payment, convert kilograms to pounds, generate a secure password, create a QR code or format JSON, each tool is built to be accurate, easy to use and fast on every device.

Every tool page explains how the calculation works, including the formulas used, so you can trust and understand your results. There are no accounts and no limits, and wherever possible all processing happens locally in your browser for maximum privacy.