Decimal to Inch Fraction Converter
Convert between decimal inches and inch fractions like 3/8 and 7/16.
The fractions of the workshop
Imperial measurement lives in fractions — a drill bit is 3/8, a bolt is 7/16 — while calculators, drawings and digital tools work in decimals. Moving between a tape measure's fractions and a decimal value constantly trips people up. This converts a decimal inch into the nearest standard fraction and a fraction into its decimal, bridging the workshop and the calculator.
Enter a decimal or a fraction and see the other.
Rounding to a real fraction
A subtlety here is that not every decimal lands exactly on a standard fraction, so converting from decimal usually means rounding to the nearest sensible one — a sixteenth, a thirty-second, a sixty-fourth — which is exactly what you want, since those are the graduations an actual ruler or tool offers. Choosing how fine to round, to the nearest sixteenth versus sixty-fourth, matches the precision your job needs. For anyone working between imperial drawings and digital measurements, this removes a genuinely error-prone bit of mental arithmetic.
Decimal to Inch Fraction Converter FAQ
Does every decimal match a neat fraction?
Not exactly — converting from decimal rounds to the nearest standard fraction, like a sixteenth or thirty-second, which is what a real ruler offers.
Why is this useful?
Imperial tools and measurements use fractions while calculators use decimals, so you constantly need to cross between them.
Is anything uploaded?
No. The conversion happens in your browser.