Conversions calculators

10 free conversions tools, each with the formula and step-by-step working.

• Area ConverterSquare feet, metres, acres and hectares.
• Aspect Ratio CalculatorResize while keeping proportions exact.
• Data Storage ConverterBytes, KB, MB, GB and TB, binary or decimal.
• Download Time CalculatorHow long a file takes at your connection speed.
• Length ConverterMetres, feet, miles, inches and more in one place.
• Speed Convertermph, km/h, knots, m/s and pace per mile.
• Temperature ConverterCelsius, Fahrenheit and Kelvin at once.
• Video File Size CalculatorStorage needed for any bitrate and duration.
• Volume ConverterLitres, gallons, pints, cups and cubic units.
• Weight ConverterKilograms, pounds, stones, ounces and tonnes.

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