Free Online Tools
75 free calculators, converters, and generators โ fast, private, no signup
All tools run in your browser. No signup required.
Online TimerCountdown timer with alarm sound and tab-title countdown. Presets from 5 minutes to 1 hour.Utility
Flip a CoinFair 50/50 online coin toss with animation, streaks and stats.Utility
Wheel SpinnerSpin the wheel to pick a random name or option. Remove winners for raffles.Utility
Dice RollerRoll 1-6 dice with 4 to 100 sides. Fair randomness, totals and roll history.Utility
Sleep CalculatorFind the best bedtime or wake-up time using 90-minute sleep cycles.Calculator
BMI CalculatorCalculate your Body Mass Index from height and weight. Instant BMI score with category explanation.Calculator
Age CalculatorCalculate exact age in years, months, and days. Find days between any two dates.Calculator
Date Difference CalculatorCalculate calendar days between two dates. See days, direction, and approximate weeks.Calculator
Length ConverterConvert between cm, inches, feet, meters, kilometers, and miles instantly.Converter
Area ConverterConvert between square meters, square feet, acres, hectares, and more.Converter
Volume ConverterConvert between liters, milliliters, cubic meters, gallons, and cubic feet.Converter
Speed ConverterConvert between km/h, mph, m/s, knots, and ft/s.Converter
Weight ConverterConvert between kilograms, pounds, ounces, and grams instantly.Converter
Temperature ConverterConvert between Celsius, Fahrenheit, and Kelvin with instant results.Converter
Time Zone ConverterConvert date and time between world time zones. Supports major cities worldwide.Converter
Percentage CalculatorFind X% of Y, calculate percentage change, and solve common percentage problems.Calculator
Tip CalculatorCalculate tip amount and split the bill among friends. Quick restaurant math.Calculator
Loan CalculatorEstimate monthly payments, total interest, and total cost for any loan.Calculator
Compound Interest CalculatorSee how your savings grow with compound interest over time.Calculator
Fraction CalculatorAdd, subtract, multiply, and divide fractions. Results shown as simplified fractions.Calculator
Word CounterCount words, characters, sentences, and paragraphs in any text instantly.Text
Password GeneratorGenerate strong, random passwords with custom length and character options.Generator
UUID GeneratorGenerate random UUID v4 identifiers for apps, databases, and APIs.Generator
Random Number GeneratorPick random numbers within any range. Generate single or multiple results.Generator
Unix Timestamp ConverterConvert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds.Converter
JSON FormatterFormat, minify, and validate JSON data instantly. Pretty-print with indentation or compress to a single line.Text
JSON โ CSV ConverterConvert JSON to CSV or CSV to JSON with nested-object flattening and safe local processing.Text
Base64 & Base64URL Encoder / DecoderEncode or decode UTF-8 text with standard Base64 and URL-safe Base64URL.Text
URL Encoder / DecoderEncode URLs or URL components and decode percent-encoded strings instantly.Text
HTML Entity Encoder / DecoderEscape HTML special characters or decode named, decimal, and hexadecimal entities.Text
Online CalculatorA simple online calculator for everyday math โ addition, subtraction, multiplication, and division.Calculator
MD5 Hash GeneratorGenerate MD5 hash digests from any text string. Useful for checksums, testing, and legacy integrations.Text
Color PickerPick a color and get HEX, RGB, and HSL values instantly. Copy any format with one click.Utility
QR Code GeneratorCreate QR codes from text or URLs. Download as PNG image in your chosen size.Generator
Drawing BoardDraw freely on a digital canvas. Choose colors and line width, then clear or download your artwork.Fun
Scrolling BarrageDisplay scrolling text barrage on full screen โ perfect for events, streams, and fun messages.Fun
Text to ImageTurn plain text into a PNG image. Customize font size, colors, and padding, then download.Text
Mini English ConverterConvert normal English letters to cute mini Unicode small caps โ and back again.Text
UTF-8 ConverterConvert text to UTF-8 hex bytes or decode hex back to readable text. View Unicode code points instantly.Text
Morse Code ConverterConvert text to Morse code and back. Copy results or play the audio tone pattern.Text
Chinese Number ConverterConvert Arabic numerals to Chinese uppercase (ๅฃน่ดฐๅ) or RMB formal amounts.Text
Superscript & Subscript ConverterConvert normal text to Unicode superscript or subscript characters, or revert back to plain text.Text
ASCII TableQuick reference for ASCII characters 0โ127. Search, browse, and copy decimal, hex, and character values.Reference
Zodiac Sign LookupFind your Western zodiac sign by birth date. Quick reference with date ranges.Reference
Solar System ReferenceQuick reference table of the Sun and eight planets โ diameter, distance, orbital period, and moons.Reference
Periodic TableInteractive periodic table of elements. Click any element for symbol, atomic number, and atomic weight.Reference
Decision MakerCan't decide? Enter options and spin the wheel or pick randomly. Great for lunch, chores, or fun choices.Fun
Countdown DaysCount days until a future date or days since a past event. Name your event and track the countdown.Time
Stopwatch & TimerOnline stopwatch with lap times and a countdown timer tab. Start, pause, reset โ all in your browser.Time
Pomodoro TimerFocus with the Pomodoro technique โ 25-minute work sessions and 5-minute breaks. Track completed sessions.Time
Screen ClockFull-screen digital clock for your monitor. Toggle 12/24-hour format, seconds, and date display.Time
Kinship CalculatorCalculate Chinese kinship terms from relationship chains. Covers common simplified Chinese family titles.Calculator
Image CompressorCompress, resize, and convert JPG, PNG, and WebP images locally with transparent file-size comparisons.Utility
QR Code DecoderDecode QR codes from uploaded images. Extract text or URLs instantly in your browser.Utility
1 Minute TimerOne-click 1-minute countdown with alarm.Utility
2 Minute TimerOne-click 2-minute countdown with alarm.Utility
3 Minute TimerOne-click 3-minute countdown with alarm.Utility
5 Minute TimerOne-click 5-minute countdown with alarm.Utility
10 Minute TimerOne-click 10-minute countdown with alarm.Utility
15 Minute TimerOne-click 15-minute countdown with alarm.Utility
20 Minute TimerOne-click 20-minute countdown with alarm.Utility
25 Minute TimerOne-click 25-minute countdown with alarm.Utility
30 Minute TimerOne-click 30-minute countdown with alarm.Utility
45 Minute TimerOne-click 45-minute countdown with alarm.Utility
1 Hour TimerOne-click 60-minute countdown with alarm.Utility
90 Minute TimerOne-click 90-minute countdown with alarm.Utility
Case ConverterChange text to UPPERCASE, lowercase, Title Case, Sentence case, or aLtErNaTiNg case.Text
Binary TranslatorConvert text to binary code (0s and 1s) and binary back to text. Full Unicode support.Converter
Roman Numeral ConverterConvert numbers to Roman numerals (1โ3999) and Roman numerals back to numbers.Converter
Hours CalculatorHours and minutes between two times, minus breaks. Decimal hours for timesheets.Calculator
Discount CalculatorFinal price and savings from any percent off, including stacked extra discounts.Calculator
Calorie CalculatorEstimate BMR and daily calories to maintain, lose, or gain weight (Mifflin-St Jeor).Calculator
Grade CalculatorWeighted class grades, plus the score you need on the final exam to hit your target.Calculator
Aspect Ratio CalculatorSolve width or height for any ratio (16:9, 4:3, 21:9), or reduce dimensions to the simplest ratio.Calculator
Military Time ConverterConvert 24-hour military time to 12-hour time and back, with a full conversion chart.Converter
Free Online Calculators, Converters & Generators
myonlinetools.top offers free browser-based tools for everyday math, unit conversion, developer utilities, and quick generators. Every tool runs locally in your browser when possible โ no account signup, no installs. Whether you need a BMI calculator, URL encoder, JSON formatter, password generator, or Unix timestamp converter, you get instant results on desktop and mobile.
We focus on speed, clarity, and privacy. Most calculations never leave your device. This site is built for students, developers, travelers, and anyone who needs a reliable online calculator without clutter or paywalls.
Popular Free Tools
- BMI Calculator โ Body Mass Index from height and weight (metric or imperial).
- Age Calculator โ Exact age in years, months, and days from any birth date.
- Date Difference Calculator โ Days and weeks between two calendar dates.
- Length Converter โ Convert cm, inches, feet, meters, miles, and more.
- Percentage Calculator โ Percent of, percent change, and reverse calculations.
- Loan Calculator โ Estimate monthly payments and total interest (estimates only).
- Password Generator โ Strong random passwords with custom length and symbols.
- Random Number Generator โ Pick random integers in any range.
- Unix Timestamp Converter โ Epoch seconds/milliseconds โ readable dates.
- URL Encoder / Decoder โ Encode full URLs or URL components and decode percent-encoded strings.
- HTML Entity Encoder / Decoder โ Escape HTML special characters or decode named and numeric entities.
- JSON โ CSV Converter โ Convert API JSON to spreadsheet rows or CSV records to JSON locally.
Browse by Category
Use the category tabs above to explore Calculators (BMI, loan, percentage), Converters (length, weight, temperature, Unix time), and Generators (passwords, UUIDs, random numbers). New tools are added over time; bookmark this page for quick access.
Note: Tools on this site provide general information and estimates. They are not medical, financial, or legal advice. See our Privacy Policy and Terms of Use.