Daniel Oh
Featured contributor MSc Applied Statistics; 7 years in analytics and data tooling.

Daniel Oh

Senior Contributor, Math & Statistics

0 calculators 0 articles Member since Jun 2026
Statistics / Descriptive

Range Calculator

Compute the range (max − min), along with the minimum, maximum, and count of a list of numbers.

basic
11,841 4.8 1 min
Math / Geometry

Right Triangle Calculator

From the two legs (a, b) of a right triangle, compute the hypotenuse, both acute angles, the area, and the perimeter.

basic
6,455 4.6 1 min
tutorial Math

Percentages Without the Headache

Every "X% of Y" problem, every "what percent of", every percent-change question — written out the way you'd actually say them.

Daniel Oh Daniel Oh
3 min

Reviewed by Daniel Oh

These calculators were technically reviewed by Daniel Oh for accuracy.