Converter calculators

Dedicated converter pages scale a quantity through a shared base unit—area, length families, numeral bases, and similar conversions.

Factors follow conventional SI and customary constants. For a multi-family hub in one UI, use the Unit Converter; family pages stay focused on one dimension.

Converters

Angle Converter

Degrees, radians, and gradians (mode 0–3).
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Converters

Area Converter

Convert between square meters, acres, hectares, square feet, and more.
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Converters

Base Converter

Convert integers between binary, octal, decimal, and hexadecimal.
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Converters

Data Storage Converter

Convert among B, KB, MB, GB, TB (binary).
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Converters

Download Speed Converter

Convert download/transfer rates between bit and byte based units.
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Converters

Energy Converter

Convert joules, calories, watt-hours, BTU, and electronvolts.
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Converters

Force Converter

Convert newtons, kilogram-force, pound-force, and dynes.
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Converters

Fuel Economy Converter

MPG ↔ L/100km (mode 0=mpg→L/100km, 1=reverse).
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Converters

Length Converter

Convert meters, kilometers, miles, feet, inches, and more.
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Converters

Megabytes Converter

Convert data sizes between bits, bytes, KB/MB/GB (decimal SI) and KiB/MiB/GiB.
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Converters

Power Converter

Convert watts, kilowatts, horsepower, and BTU per hour.
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Converters

Pressure Converter

Convert pascals, bars, atmospheres, psi, and torr.
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Converters

Roman Numerals Converter

Convert between Arabic numbers (1–3999) and Roman numerals.
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Converters

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.
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Converters

Time Converter

Convert seconds, minutes, hours, days, weeks, and years.
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Converters

Velocity Converter

Convert speed between m/s, km/h, mph, knots, and ft/s.
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Converters

Volume Converter

Convert liters, milliliters, gallons, cups, and cubic meters.
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Converters

Weight Converter

Convert kilograms, grams, pounds, ounces, and stones.
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