Unit Converter

Convert between units of length, weight, temperature, area, volume, speed, data size and currency — instantly and accurately.

Conversion Tips

Metric vs Imperial

Most countries use the metric system (meters, kilograms). The US, UK and a few others still use imperial units (feet, pounds). This tool handles both seamlessly.

Temperature Is Special

Unlike other units, temperature conversion uses formulas (not simple multiplication). Zero degrees in each scale means something different.

KB vs KiB

In computing, 1 KB = 1,000 bytes (decimal) while 1 KiB = 1,024 bytes (binary). This tool includes both standards for accuracy.

Live Currency Rates

Currency rates are fetched live from the European Central Bank. You can also manually adjust the rate for custom calculations.

Common Use Cases

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Travel

Convert miles to kilometers, Fahrenheit to Celsius, and local currencies before your trip.

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Cooking

Convert cups to milliliters, ounces to grams, and Fahrenheit to Celsius for international recipes.

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Real Estate

Convert square feet to square meters, acres to hectares for property listings across countries.

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IT & Storage

Figure out exactly how many GB your files take — in decimal (marketing) or binary (actual) units.

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Shipping & Trade

Convert between kilograms and pounds, liters and gallons for international shipping documents.

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Education

Quickly check your homework answers or verify unit conversions in physics, chemistry and engineering.

Frequently Asked Questions

Are the conversions accurate?

Yes. All conversion factors are based on internationally recognized standards (SI, NIST). Results are displayed with appropriate precision.

Is my data stored anywhere?

No. All conversions happen in your browser. Nothing is sent to a server. Your last-used settings are saved locally on your device for convenience.

How often are currency rates updated?

Currency rates are sourced from the European Central Bank (ECB) and updated on business days. If the live rate cannot be fetched, a fallback reference rate is used — you can also enter a custom rate manually.

What is the difference between US and UK gallons?

A US gallon is approximately 3.785 liters, while a UK (imperial) gallon is approximately 4.546 liters. This tool supports both.

Why does 0 °F not equal 0 °C?

Temperature scales have different zero points. 0 °C is the freezing point of water, while 0 °F is approximately −17.8 °C. The conversion involves both multiplication and addition, not a simple ratio.

Can I use this for professional or engineering work?

This tool provides high-precision conversions suitable for most practical purposes. For mission-critical calculations, always verify with official references.