Free Online Converters

Free online converters: unit converter (length, weight, temperature) and number base converter. They run in your browser.

Convert between different units and number systems quickly and accurately. Convert meters to feet, kilograms to pounds, Celsius to Fahrenheit or numbers between binary, octal, decimal and hexadecimal. Everything is processed in your browser, no sign-up.

🔁 Converters (2)

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Unit Converter

Convert length, weight and temperature units: meters, feet, kilograms, pounds, degrees and more. Fast and free.

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Currency Converter

Convert between the 25 most used currencies in the world: EUR, USD, GBP, JPY, MXN, BRL and more. Free and instant.

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Who they are for

They are useful for students, engineering and construction professionals, programmers, cooks and anyone who needs to convert units or number systems.

Problems they solve

Instant conversions of length, weight and temperature, as well as converting numbers between number bases, are the main problems these tools solve.

How they work

Select the category, choose the source unit or base and the destination one, and enter the value. The result appears instantly using standard formulas.

Frequently Asked Questions

Are the converters accurate?

Yes. They use internationally recognized standard conversion factors, so the results are exact.

What conversions does the unit converter include?

It currently includes length, weight (mass) and temperature, with the most common units in each category.

Is the base converter useful for programming?

Yes. Converting between binary, octal, decimal and hexadecimal is common in programming and computer science studies.