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Gratis Onlinekalkylatorer
Free online calculators for BMI, age, percentage, unit conversion, and more. Fast, accurate, available in 15 languages.
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Beräkna BMI
Calculate your Body Mass Index (BMI) instantly. Find out if you are underweight, normal, overweight, or obese based on your height and weight.
Ålderskalkylator
Calculate your exact age in years, months, and days. Find out your next birthday, day of birth, zodiac sign, and total days lived.
Lösenordsgenerator
Generate strong, secure random passwords. Customize length, characters, and complexity. Strength analysis included.
Drickspengarkalkylator
Calculate tip amount and split the bill between multiple people. Supports custom tip percentages.
Sömnkalkylator
Calculate the best bedtime or wake-up time based on 90-minute sleep cycles for maximum energy.
Nedräkningstimer
Create a countdown timer to any date and time. See days, hours, minutes, and seconds remaining.
Hur många dagar har jag levt?
Find out exactly how many days, weeks, hours, and heartbeats you have lived since your birthday.
JSON Formatter & Validator
Format, validate and beautify JSON instantly. Detect syntax errors with clear messages. Free online JSON formatter tool.
QR Code Generator
Generate QR codes instantly for any text, URL, email or phone number. Download as PNG. No server required.
Quit Smoking Calculator
Calculate money saved, cigarettes avoided and health benefits since you quit smoking. Enter your quit date and pack price.
⭐ Popular Tools
Beräkna BMI
Calculate your Body Mass Index (BMI) instantly. Find out if you are underweight, normal, overweight, or obese based on your height and weight.
Ålderskalkylator
Calculate your exact age in years, months, and days. Find out your next birthday, day of birth, zodiac sign, and total days lived.
Procentkalkylator
Calculate percentages, percentage change, increase, decrease, and more. Instant results with step-by-step explanations.
Enhetsomvandlare
Convert between length, weight, volume, area, and speed units instantly. Supports metric and imperial systems.
Lösenordsgenerator
Generate strong, secure random passwords. Customize length, characters, and complexity. Strength analysis included.
Kaloribehovskalkylator
Calculate your daily calorie needs (TDEE) and basal metabolic rate (BMR) based on age, weight, height, and activity level.
Dagar mellan datum
Calculate the exact number of days, weeks, months, and years between two dates. Add or subtract days from a date.
Nedräkningstimer
Create a countdown timer to any date and time. See days, hours, minutes, and seconds remaining.
Arbetstimmar
Calculate total work hours, overtime, and weekly hours. Perfect for tracking work time and payroll.
JSON Formatter & Validator
Format, validate and beautify JSON instantly. Detect syntax errors with clear messages. Free online JSON formatter tool.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text instantly. No server, works entirely in your browser.
QR Code Generator
Generate QR codes instantly for any text, URL, email or phone number. Download as PNG. No server required.
Daily Water Intake Calculator
Calculate your recommended daily water intake based on body weight and activity level. Supports metric and imperial.
Room Area Calculator (m²)
Calculate room area in square meters or square feet. Add multiple rooms and get total area instantly.
Quit Smoking Calculator
Calculate money saved, cigarettes avoided and health benefits since you quit smoking. Enter your quit date and pack price.
HEX ↔ RGB Color Converter
Convert HEX color codes to RGB values and vice versa. Preview colors instantly. Essential tool for designers and developers.
Text to URL Slug Generator
Convert any title or text into a clean, SEO-friendly URL slug. Removes special characters and spaces automatically.
Categories
🛠️ All Tools
Beräkna BMI
Calculate your Body Mass Index (BMI) instantly. Find out if you are underweight, normal, overweight, or obese based on your height and weight.
Ålderskalkylator
Calculate your exact age in years, months, and days. Find out your next birthday, day of birth, zodiac sign, and total days lived.
Procentkalkylator
Calculate percentages, percentage change, increase, decrease, and more. Instant results with step-by-step explanations.
Enhetsomvandlare
Convert between length, weight, volume, area, and speed units instantly. Supports metric and imperial systems.
Lösenordsgenerator
Generate strong, secure random passwords. Customize length, characters, and complexity. Strength analysis included.
Kaloribehovskalkylator
Calculate your daily calorie needs (TDEE) and basal metabolic rate (BMR) based on age, weight, height, and activity level.
Dagar mellan datum
Calculate the exact number of days, weeks, months, and years between two dates. Add or subtract days from a date.
Ordräknare
Count words, characters, sentences, and paragraphs instantly. Estimate reading and speaking time for your text.
Drickspengarkalkylator
Calculate tip amount and split the bill between multiple people. Supports custom tip percentages.
Temperaturomvandlare
Convert between Celsius, Fahrenheit, Kelvin, and Rankine instantly. Bidirectional conversion.
Sömnkalkylator
Calculate the best bedtime or wake-up time based on 90-minute sleep cycles for maximum energy.
Filstorleksomvandlare
Convert between bits, bytes, KB, MB, GB, TB and more. Supports SI and binary units.
Nedräkningstimer
Create a countdown timer to any date and time. See days, hours, minutes, and seconds remaining.
Hur många dagar har jag levt?
Find out exactly how many days, weeks, hours, and heartbeats you have lived since your birthday.
Arbetstimmar
Calculate total work hours, overtime, and weekly hours. Perfect for tracking work time and payroll.
JSON Formatter & Validator
Format, validate and beautify JSON instantly. Detect syntax errors with clear messages. Free online JSON formatter tool.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text instantly. No server, works entirely in your browser.
QR Code Generator
Generate QR codes instantly for any text, URL, email or phone number. Download as PNG. No server required.
Daily Water Intake Calculator
Calculate your recommended daily water intake based on body weight and activity level. Supports metric and imperial.
Room Area Calculator (m²)
Calculate room area in square meters or square feet. Add multiple rooms and get total area instantly.
Quit Smoking Calculator
Calculate money saved, cigarettes avoided and health benefits since you quit smoking. Enter your quit date and pack price.
Morse Code Translator
Translate text to Morse code or decode Morse code to text instantly. Supports dots, dashes and spaces.
Binary ↔ Text Converter
Convert plain text to binary (ASCII) or binary back to readable text. Instant results, no installation needed.
HEX ↔ RGB Color Converter
Convert HEX color codes to RGB values and vice versa. Preview colors instantly. Essential tool for designers and developers.
Text to URL Slug Generator
Convert any title or text into a clean, SEO-friendly URL slug. Removes special characters and spaces automatically.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates or convert any date to a Unix timestamp. Milliseconds supported.
Alla gratis kalkylatorer
Free online calculators for BMI, age, percentage, unit conversion, and more. Fast, accurate, available in 15 languages.