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Length Converter
Unit ConverterPopular
Convert metric, imperial and traditional Chinese units
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Temperature Converter
Unit ConverterPopular
Convert Celsius, Fahrenheit, Kelvin and more
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Date Calculator
EfficiencyPopular
Calculate date differences and shift future/past dates
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BMI Calculator
HealthPopular
Calculate BMI and get a quick assessment
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New
Age Calculator
EfficiencyNew
Age calculation and birthday countdown
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Simple/Compound Interest Calculator
FinancialNew
Compute investment returns and compound growth
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Prime Number Checker
MathNew
Prime test and factorization
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CIDR Calculator
DeveloperNew
Calculate subnet masks and IP ranges
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All tools
Length Converter
Unit ConverterPopular
Convert metric, imperial and traditional Chinese units
Get Started
Area Converter
Unit ConverterConvert square meter, acre, mu and more
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Volume Converter
Unit ConverterConvert cubic meter, liter, gallon and more
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Mass Converter
Unit ConverterConvert kilogram, pound, jin and more
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Temperature Converter
Unit ConverterPopular
Convert Celsius, Fahrenheit, Kelvin and more
Get Started
Date Calculator
EfficiencyPopular
Calculate date differences and shift future/past dates
Get Started
Time Calculator
EfficiencyCalculate time differences and time add/subtract
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Age Calculator
EfficiencyNew
Age calculation and birthday countdown
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BMI Calculator
HealthPopular
Calculate BMI and get a quick assessment
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Macronutrient Calculator
HealthCalculate calories, BMR, TDEE and macronutrient split
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Body Fat Calculator
HealthEstimate body fat percentage and analysis
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Blood Type Calculator
HealthEstimate child blood type probabilities from parents
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Morse Code Converter
EfficiencyConvert text and Morse code both ways
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Loan Calculator
FinancialPopular
Calculate monthly payment, total interest and schedule
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Simple/Compound Interest Calculator
FinancialNew
Compute investment returns and compound growth
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Unit Price Calculator
FinancialCompare unit prices for best value
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Sales Tax Calculator
FinancialQuickly calculate sales tax and final price
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Tip Calculator
FinancialQuickly calculate tips and split bills
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Discount Calculator
FinancialEasily calculate discounts and final prices
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Retirement Calculator
FinancialPlan retirement savings and investment goals
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Random Number Generator
MathPopular
Generate random numbers in a given range
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Average Calculator
MathCalculate different types of averages
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GCD/LCM
MathCompute greatest common divisor and least common multiple
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Prime Number Checker
MathNew
Prime test and factorization
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Percentage Calculator
MathPopular
Various percentage computations
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Fraction Calculator
MathFraction operations, simplification and decimal conversion
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Square Root Calculator
MathCompute various root operations
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Function Calculator
MathBasic function calculations and plotting
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Base Converter
DeveloperPopular
Convert between binary, octal, decimal and hex
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HTTP Status Codes
DeveloperLookup the meaning of HTTP status codes
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Base64 Encode/Decode
DeveloperConvert strings to/from Base64
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String ↔ Hex Converter
DeveloperConvert strings and hexadecimal values
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CIDR Calculator
DeveloperNew
Calculate subnet masks and IP ranges
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String Hash
DeveloperCompute MD5 and SHA series hashes
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Disk Partition Calculator
DeveloperStorage allocation calculations
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Timestamp Converter
DeveloperConvert Unix timestamps and date-time
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