Unit Converter

What Is a Unit Converter?

A unit converter eliminates the guesswork when switching between metric and imperial measurements. Whether you are following a recipe from another country, checking luggage weight limits, or interpreting weather forecasts abroad, this tool translates numbers between systems in a single step. It covers the five most commonly needed measurement types: length, weight, temperature, volume, and speed.

The metric system is used by most of the world, while the United States, Liberia, and Myanmar still use imperial as the primary system. Travellers, students, engineers, and cooks regularly need to move between the two. Memorising every conversion factor is impractical when a reliable calculator can do it faster and with fewer errors.

This converter uses the exact conversion factors defined by international standards bodies such as the International Bureau of Weights and Measures. Results are rounded to a practical number of decimal places so you can use them directly in real-world situations without further adjustment.

How Do You Use This Unit Converter?

Select the measurement type (length, weight, temperature, volume, or speed). Enter your value, choose the source unit and target unit, then click Convert to see the result.

1. Select the measurement category: length, weight, temperature, volume, or speed.
2. Enter the numeric value you want to convert.
3. Choose the source unit from the dropdown (e.g., kilometres).
4. Choose the target unit from the dropdown (e.g., miles).
5. Click Convert to see the converted value.
6. Switch the source and target units to convert in the opposite direction.

How Does the Unit Converter Formula Work?

The formula used: Converted Value = Original Value × Conversion Factor (e.g., 1 mile = 1.60934 km, 1 kg = 2.20462 lb)

What Are Some Example Calculations?

Convert 10 kilometres to miles: 10 × 0.621371 = 6.21 miles. Convert 75 kg to pounds: 75 × 2.20462 = 165.35 lb. Convert 30°C to Fahrenheit: (30 × 9/5) + 32 = 86°F.

When Should You Use a Unit Converter?

Use the unit converter whenever you encounter measurements in an unfamiliar system. Common situations include following recipes from other countries, checking airline baggage limits in kilograms versus pounds, understanding speed limits while driving abroad, and converting room dimensions when shopping for furniture internationally.

Students and professionals also rely on unit conversion for academic work, scientific calculations, and engineering specifications. If a textbook gives measurements in metres but your project requires feet, or a data sheet lists capacity in gallons but you need litres, this tool provides an instant and accurate answer.

What Do These Terms Mean?

What Are the Best Tips to Know?

• Bookmark this page for quick access when cooking with recipes from different countries.
• Remember that 1 kilogram is roughly 2.2 pounds as a mental shortcut for quick estimates.
• For temperature, 28°C is about 82°F — a useful anchor point for weather comparisons.
• When converting volume for cooking, note that US cups and UK cups are different sizes (236 ml vs 284 ml).
• Double-check whether a recipe uses fluid ounces (volume) or ounces (weight) before converting.

What Mistakes Should You Avoid?

• Confusing fluid ounces (a volume measurement) with ounces (a weight measurement).
• Using the UK gallon (4.546 L) when the source means US gallon (3.785 L) or vice versa.
• Forgetting that temperature conversion is not a simple multiplication — it requires adding or subtracting 32.
• Rounding too aggressively in scientific or engineering contexts where precision matters.