What would you like to calculate today?
Calculators, converters and other online tools to solve just about everything
CalcPark.com was created to provide you easy to use online calculators (and also converters, generators, countdown timers, charts and other online tools) that can be used for a quick and accurate calculation of almost everything and make your life easier.
You can say that yet another online calculator site but I believe that CalcPark is special in many ways. For example, we have some very unique calculators which can only be found here. The number of calculators and online tools offered is constantly growing and we also provide you many extras, so you will have more time for what is really important to you.
LATEST
Sleep Calculator
Free sleep calculator: find the best times to go to bed or wake up based on 90-minute sleep cycles, so you wake up refreshed instead of groggy.
Morse Code Translator
Free Morse code translator: convert text to Morse code and Morse back to text instantly, with support for letters, numbers and punctuation.
Pet Age Calculator
Free pet age calculator: convert your dog or cat age into human years using a realistic, size-aware formula, and see how old your pet really is.
Online Calculators
Free online calculators for health, finance, math, dates and everyday life — from BMI and compound interest to percentages and age, all working on any device.BMI Calculator
Free online BMI calculator: find your body mass index from height and weight, see your healthy weight range, and check it in metric or imperial units.
Decimal to Fraction Calculator
Free decimal to fraction calculator: convert any decimal into a fraction in its simplest form, including repeating decimals, with the steps shown.
Download Time Calculator
Free download time calculator: work out how long any file will take to download at your internet speed, from kilobits to gigabits per second.
Ideal Weight Calculator
Free online ideal weight calculator: find your ideal body weight from height, age and gender using 6 trusted formulas, in metric and imperial units.
Poker Hand Range Calculator
Free poker hand range calculator: build and visualise hand ranges, see the odds update instantly, and sharpen your Texas Hold'em strategy.
PSN Trophy Level Calculator
Free PSN trophy level calculator: find your PlayStation trophy level from your trophies and see exactly how many points you need for the next level.
Online Converters
Free online converters for length, weight, temperature, colors, numbers and more — quick, accurate unit and format conversions that work on any device.Binary to Decimal to Hexadecimal Converter
Free binary, decimal and hexadecimal converter: convert numbers instantly between base 2, base 10 and base 16, including fractional values.
Roman Numerals Converter
Free Roman numerals converter: change Roman numerals to Arabic numbers and back instantly, with the meaning of each letter explained.
Temperature Conversion
Free temperature converter: instantly convert between Celsius, Fahrenheit and Kelvin in either direction, with the conversion formulas shown.
Weight Converter
Free weight converter: instantly convert between kilograms, pounds, grams, ounces and stones, switching easily between metric and imperial units.
Countdowns
Free live countdown timers to your favourite events — Christmas, New Year, holidays, the seasons or any date — showing the days, hours and minutes left.How many days until Christmas?
How many days until Christmas? This free countdown timer shows exactly how many days, hours and minutes are left until the next 25 December.
How many days until New Year’s Eve?
How many days until New Year's Eve? This free countdown timer shows exactly how many days, hours and minutes are left until the next 31 December.
How many days until...?
How many days until 2027, your wedding, christmas, etc? Calculate the number of days there are until a specific date of your choice. Countdown Timer to any date.
Online Generators
Free online generators to create exactly what you need fast — strong passwords, QR codes, memes and random numbers, all in your browser with no install.Password Generator
Free password generator: create strong, random, hard-to-hack passwords in one click, with custom length and a mix of letters, numbers and symbols.
Random Number Generator
Free random number generator: pick a random number between any two values, like 1-100 or 20-50, with cryptographically strong, unbiased results.
Tables & Charts
Free reference tables and charts — ASCII and PETSCII codes, HTML colors, APGAR scores and legal BAC limits — searchable and easy to read on any device.ASCII Code Table
Complete ASCII code table with hex, binary, decimal and HTML values: a searchable chart of every ASCII and extended ASCII character code in one place.
HTML Color Codes
HTML color codes chart with a Hex, RGB, HSL, HSV and CMYK color picker: find any color name and its Hex and RGB values for your website in one place.
Online Tools
Free online tools for everyday tasks — a stopwatch, dice roller, mic and camera test, emoji picker, word counter, speed test and more, all in your browser.Emoji Copy Paste
Free emoji copy and paste tool: search any emoji and copy it in one click as a character, HTML code or hex code, ready to paste anywhere. ✅
Reaction Time Test
Free reaction time test: measure how fast your reflexes are in milliseconds, see how you compare to the average, and get tips to react faster.
Moon Phase Calendar
Free moon phase calendar: see today's moon phase, the date of the next full moon and new moon, and a graphical lunar calendar for any month.
Dice Roller
Free online dice roller: roll virtual dice with 4, 6, 8, 10, 12, 20 or 100 sides, one or several at a time, with a fair random result every roll.
Character and Word Counter Calculator
Free character and word counter: paste your text to instantly count characters, words, and characters with or without spaces, right in your browser.
Frequently asked questions
What is CalcPark?
CalcPark is a free collection of online calculators, converters, generators, countdown timers and other handy tools that work on any device, with nothing to install.
Are the calculators free to use?
Yes. Every calculator and tool on CalcPark is completely free, with no registration or download required.
Do I need to install anything?
No. All the tools run directly in your web browser on a phone, tablet, PC or Mac, so there is nothing to install.
How many tools does CalcPark have?
CalcPark offers around 90 calculators, converters, charts, generators and tools, and the collection keeps growing.
Do the tools work on mobile?
Yes. Every calculator and tool is designed to work on cell phones and tablets as well as on a computer.