UtilWave
Free online converters
This hub organizes useful converters for quick calculations, reference values and everyday format changes.
20 tools
Converters
Number Base ConverterConvert numbers between decimal, binary, octal and hexadecimal in real time. Free and right in your browser.Length ConverterConvert between millimeters, centimeters, meters, kilometers, inches, feet, yards and miles. Free and in real time.Weight ConverterConvert between milligrams, grams, kilograms, tonnes, ounces, pounds and stone. Free and in real time.Temperature ConverterConvert temperatures between Celsius, Fahrenheit and Kelvin in real time. Free and right in your browser.Roman NumeralsConvert Arabic numbers to Roman numerals and back (1 to 3999). Free and instant.Audio & Video TranscriptionAutomatically transcribe audio and video to text with AI (Whisper). Download as TXT, SRT or VTT. Free.Number to WordsWrite any whole number in words (up to billions), in English. Free and instant.Currency ConverterConvert between 150+ currencies with up to date rates. US dollar, euro, real and more. Free.
Finance
Brazil Minimum WageCheck Brazil minimum wage in 2026 and calculate monthly, daily, hourly and proportional 13th salary values.CNPJ LookupLook up legal name, trade name, registration status, address and CNAE for Brazilian companies. Free.FIPE TableLook up FIPE prices for cars, motorcycles and trucks by type, brand and model. Free.
Date & Time
Add/Subtract DaysAdd or subtract days from a date and find the resulting date. Free and instant.Brazil Holiday CalendarSee Brazilian national holidays for any year, including fixed dates and movable dates calculated from Easter.Business DaysCount business days (Monday to Friday) between two dates, plus total days and weekends. Free.Hours CalculatorAdd or subtract hours and minutes in hh:mm format, even above 24 hours. Free and instant.Day of YearFind the day number in the year, the (ISO) week, the quarter and remaining days. Free and instant.Countdown TimerCreate a live countdown to a date and time, showing days, hours, minutes and seconds. Free.StopwatchOnline stopwatch with lap marking and hundredths precision. Free and right in your browser.PomodoroPomodoro timer with 25-minute focus and 5-minute break cycles, with cycle count. Free.World ClockSee the current time now in cities around the world, live. Compare time zones, add cities and see the hour difference. Free.
Conversion types
- Units, temperature, measurements and number formats.
- Dates, times, business days and countdowns.
- Currencies and exchange pairs for quick reference.
How to read results
Online conversions are useful as quick references. For financial, tax or legal decisions, confirm values with official sources.