Convert any decimal into the nearest simple fraction, including repeating decimals like 0.333.
Uses continued fractions to find the best p/q approximation within your denominator limit.
0.375 becomes 3/8 exactly. With a maximum denominator of 16, 0.6 still resolves cleanly to 3/5… capped at 16 it returns the closest fit.
Every terminating decimal maps exactly to a fraction. Repeating decimals like 0.333… are exact too, but the calculator must guess where your typed digits end — so it finds the simplest fraction consistent with what you entered.
Lower the maximum denominator when working with rulers and drill bits (try 32 or 64); raise it for precise engineering conversions.
0.125 equals exactly 1/8.
Set the max denominator to 16 or 64 and the result will snap to standard tape-measure divisions.
Full expression calculator with parentheses, powers, roots, trigonometry, logarithms and constants π and e.
Add, subtract, multiply and divide fractions and mixed numbers, with results automatically simplified.
Calculate X% of Y, find what percent one number is of another, and solve percentage increase problems in one place.
Find the percentage increase between an original value and a new value, including the absolute change.
Convert fractions and mixed numbers into decimal form with up to six decimal places.
Raise any base to any power, including negative and fractional exponents.