Quick BuildCalc

Unit Conversion Calculator & Construction Reference

A free unit converter and quick-reference chart for length, area, volume, and weight, covering both imperial and metric units.

Example values provided — edit for your project.

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Conversions

reference · unit converter

Quick Reference

Common construction conversions, all in one place, for quick reference without doing the math yourself.

1 foot12 in
1 yard3 ft / 36 in
1 mile5,280 ft
1 sq ft144 in²
1 sq yard9 ft²
1 acre43,560 ft²
1 cubic foot1,728 in³
1 cubic yard27 ft³
1 gallon4 qt / 128 fl oz
1 cubic foot (water)7.48 gal
1 pound16 oz
1 ton2,000 lb

Unit Converter

Convert between common length, area, volume, and weight units, including both imperial and metric.

Converted value

Why Unit Conversions Matter on the Job Site

Construction measurements rarely arrive in one consistent unit — plans might specify feet, materials are priced by the cubic yard or square foot, and imported hardware sometimes uses metric sizing. This category exists to make those conversions fast and reliable without needing a separate reference chart or manual calculation every time a number doesn't match your expected unit.

How These Tools Work Together

The Quick Reference chart covers the fixed conversion factors that come up most often — feet to yards, cubic feet to cubic yards, and similar standard equivalents — for a fast lookup. The Unit Converter handles any custom conversion across length, area, volume, or weight, including metric units, for values that aren't on the quick-reference list.

Frequently Asked Questions

Why do so many calculators on this site use cubic yards?

Concrete, mulch, soil, and similar bulk materials are priced and delivered by the cubic yard industry-wide, so converting a length-times-width-times-depth calculation (naturally in cubic feet) into cubic yards is one of the most common conversions in construction estimating.

Are metric conversions accurate for construction use?

Yes — the conversion factors used here are standard, fixed values defined by the U.S. customary and metric measurement systems, not estimates. They apply the same way regardless of the specific material or project.