How many feet are in a mile?

There are 5,280 feet in a mile. This equals 1,760 yards or approximately 1,609.344 meters.

How do you convert Celsius to Fahrenheit?

Multiply the Celsius temperature by 9/5 and add 32. Formula: °F = °C × 9/5 + 32. For example, 20°C = 68°F.

How many ounces are in a pound?

There are 16 ounces in a pound. One pound is approximately 453.592 grams.

How many cups are in a gallon?

There are 16 cups in a US gallon. One gallon equals 128 fluid ounces or approximately 3.785 liters.

What is the difference between metric and imperial?

The metric system (meters, kilograms, liters) is based on powers of 10 and used worldwide. The imperial system (feet, pounds, gallons) is primarily used in the US.

How many kilometers are in a mile?

One mile equals approximately 1.609344 kilometers. Conversely, one kilometer is about 0.621371 miles.

verified 2026 NIST Metrology Standard • Double-Precision Conversion Engine

Unit Converter

Convert between units of length, weight, temperature, volume, area, and speed instantly. Free, accurate, and easy to use. No signup required.

swap_horiz Unit Conversion Parameters

Step 1 of 2

From Value

Target Unit

straighten Common Metric-to-Imperial Reference (2026 Standards)

1 Inch 2.54 cm

1 Foot 0.3048 m

1 Mile 1.6093 km

1 Pound (lb) 0.4536 kg

1 Gallon (US) 3.7854 L

0 °C 32 °F

speed Standardized Metric Result

Exact Metrology

Converted Quantity

3.2808 ft

1 Meter = 3.2808 Feet

Source Amount

1 m

Target Unit

Equivalence Formula

1 m = 3.28084 ft

functions

Unit Magnitude Proportion Ratio 1 : 3.28

scale

Source Ratio

1.0

Target Ratio

3.28

health_and_safety Measurement System Standard

NIST Metrology

Exact standards benchmarked against International Bureau of Weights and Measures (BIPM) and US Customary units.

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Knowledge Base & Methodology

Frequently Asked Questions

Metrology Standard Disclosure (2026): Unit conversion calculations adhere strictly to the National Institute of Standards and Technology (NIST) Special Publication 811 Guide for the Use of the International System of Units (SI). Conversions are executed with double-precision IEEE-754 floating-point math.