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BuildQuantify
Length, area, volume, and weight — built for jobsite math.
This tool uses standard international conversion factors — for example, 1 meter equals exactly 3.28084 feet, and 1 cubic yard equals 27 cubic feet. All conversions update instantly as you type, so you can sanity-check a measurement mid-conversation on a call or while reading a spec sheet without opening a separate app.
Construction drawings often mix unit systems — a set of plans might list slab thickness in inches but rebar spacing in millimeters. Keeping a converter like this open avoids the manual arithmetic errors that come from re-deriving these factors by hand on site.
A structural drawing calls out rebar spacing at 150 mm on center, but your tape and layout marks are all in inches. 150 ÷ 25.4 = 5.91" — close enough to 6" that a crew working off inches can space bars at 6" without meaningfully deviating from the spec, though for critical spacing it's worth flagging the small difference to the engineer of record rather than assuming it's fine.
This kind of mixed-unit drawing is common on projects with international design teams or imported materials specified in metric sizes.
Why do my conversions look slightly different from another calculator?
Small differences usually come down to rounding — some calculators round intermediate steps, this one carries full precision through the calculation and only rounds the final displayed result.
Is a US survey foot different from an international foot?
Yes, very slightly — the US survey foot is about 0.0002% longer, a difference from an old, now-deprecated definition. This converter uses the international foot (3.28084 ft per meter), the standard for virtually all construction work outside of legal land surveying.
Can I convert feet-inch-fraction measurements here?
This tool handles decimal values across length, area, volume, and weight. For tape-measure style feet-inch-fraction math and running totals, use the Feet & Inch Calculator instead.