Convert decimal numbers to fractions, fractions to decimals, and evaluate mathematical expressions. Calculate the absolute value or round the answer by choosing from a range of tolerances, from +/- 1/2 down to +/- 1/256. The tolerance feature is great for design and fabrication to quickly determine the closest fractional inch to a decimal value, either rounded up, down, or to the closest fraction based on the required tolerance.

Swipe to the Results page to view the conversion as a fraction or mixed fraction, as well as a visual of the fractional inch on a ruler. The Solution page shows the calculation steps needed to convert the decimal to a mixed fraction, improper fraction, and a fraction with a tolerance applied.

Fraction converter, decimal converter, and fraction calculator all in one. Or just use as a normal calculator for math.