SettingsSettings for this calculationUS
The length in inches.
Enter the whole measurement in inches, including any fractional part as a decimal — five and a half inches is 5.5. If your figure is already in feet and inches, convert the feet to inches and add them: 7 ft 4 in is 88. The step is set to an eighth because that is the finest division most tapes carry and most site measurements honestly resolve to.
Length
2.5 ft
12 inches to the foot, so inches ÷ 12 = decimal feet. Exact by definition. Keep the measured form on the record and convert only for the arithmetic.
- Whole feet
- 2 ft
- Remaining inches
- 6 in
- Millimetres
- 762 mm
They open the calculator with your figures already in it
Inches to Feet Calculator: 2.5 ft — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- 12 inches to the foot — NIST Handbook 44, Appendix C (units of length)
- International yard and pound agreement, 1959 — the inch is exactly 25.4 mm
Inputs used
- Length (in)
- 30
Intermediate steps
- Whole feet
- 2 ft
- Remaining inches
- 6 in
- Millimetres
- 762 mm
Confidence note: 12 inches to the foot, so inches ÷ 12 = decimal feet. Exact by definition. Keep the measured form on the record and convert only for the arithmetic.
Estimated cost — your price
This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-12 · v1.0.0
Regulatory standards & verification citations2
- 12 inches to the foot — NIST Handbook 44, Appendix C (units of length)
- International yard and pound agreement, 1959 — the inch is exactly 25.4 mm
Cite this page
Your workspace
Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.
Twelve is a small number and this is still the conversion that goes wrong most often, because the error is never in the division. It is in what happens to the remainder: 2.5 ft read off a calculator becomes 2 ft 5 in on a cut list often enough that the mistake has a name on most sites. Decimal feet and feet-and-inches are two genuinely different notations that happen to share a unit, and a page that gives only the decimal has answered half the question. So both are here, side by side, with the millimetre equivalent for the increasingly common case of a drawing that is metric while the tape in your hand is not.