🇬🇧 Imperial Calculator
Quickly convert core imperial units for length, mass, and volume.
Ideal for travelers, builders, and students juggling imperial and metric systems.
Length (Feet)
Meters: 3.048
Centimeters: 304.8
Inches: 120
Mass (Pounds)
Kilograms: 11.3398
Grams: 11,339.81
Ounces: 400
Volume (Gallons)
Liters: 11.3562
Milliliters: 11,356.24 mL
Cups: 48
How to Use This Calculator
Enter imperial values
Provide feet, pounds, and gallons in the input fields.
Review metric conversions
Each section displays the corresponding metric units instantly.
Use supporting units
Copy the converted values for reports, CAD drawings, or shopping lists.
Formula
Length: meters = feet × 0.3048; centimeters = feet × 30.48
Mass: kilograms = pounds × 0.45359237; grams = pounds × 453.59237
Volume: liters = gallons × 3.785411784; milliliters = liters × 1,000
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
This calculator groups the most common imperial conversions in one place. Quickly compare feet to meters, pounds to kilograms, and gallons to liters without juggling multiple tools.
Results update live, letting you experiment with different measurements when designing projects or interpreting product specs.
For additional imperial units (miles, ounces, fluid ounces), use the dedicated converters in this collection.
Frequently Asked Questions
Does it support Imperial (UK) gallons?
This tool uses U.S. gallons. Convert Imperial gallons to U.S. gallons (×1.20095) before entering, or extend the calculator.
Can I convert centimeters back to feet here?
This page focuses on imperial-to-metric. Use the inch or feet converters for metric-to-imperial conversions.
Are the conversions exact?
Yes. Factors follow international standards (e.g., 1 foot = 0.3048 meters). Values are rounded only for display.
What about temperature or currency?
This calculator targets length, mass, and volume. Use specialized converters for other measurement types.