Unit & Conversion Calculators
Convert units, temperatures, currencies, data sizes, time zones, dates and recipes — accurate conversions that run entirely offline in your browser.
11 free tools · no sign-up, no adsCurrency Converter
Convert international money rates offline in your browser.
Financial CalculatorData Transfer Converter
Convert data sizes and estimate bandwidth upload/download times.
Conversion CalculatorDate Difference
Days, weeks and months between any two dates.
Math CalculatorEpoch Converter
Convert Unix timestamps to calendar dates and vice-versa.
Conversion CalculatorPassword Strength
Test password complexity and generate strong security keys.
Conversion CalculatorRecipe Scaler
Scale cooking ingredients portions up or down easily.
Conversion CalculatorRecipe Scaler & Converter
Scale recipes to any serving size and convert ingredient units.
Conversion CalculatorTemperature Converter
Convert between Celsius, Fahrenheit, and Kelvin in real time.
Conversion CalculatorTime Calculator
Add or subtract hours, minutes and seconds.
Math CalculatorTime Zone Converter
Convert date and time between standard global time zones.
Conversion CalculatorUnit Converter
Convert between length, weight, and volume units easily.
Conversion CalculatorExplore Other Categories
Climate & Sustainability Calculators
Carbon, energy, water & green living.
15 calculatorsUnit & Conversion Calculators
Units, currencies, time zones & measurements.
11 calculatorsDeveloper & Web Tools
Encoding, hashing, JSON, regex & web utilities.
25 calculatorsEducation & Student Calculators
Grades, GPA, percentage & study helpers.
16 calculatorsFinancial Calculators
Loans, investments, tax, salary & money planning.
37 calculatorsHealth & Fitness Calculators
BMI, calories, fitness, pregnancy & medication.
20 calculatorsMath Calculators
Numbers, algebra, geometry & everyday arithmetic.
26 calculators