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
Other

Week of Year Calculator

Compute the ISO 8601 week-of-year, ISO week-numbering year, day-of-year, calendar quarter, and the date range of the con...

basic
23,628 4.5 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
10,132 4.5 1 min
Math / Percentage

Geometric Sequence Calculator

Compute the n-th term and the sum of the first n terms of a geometric sequence from its first term and common ratio.

basic
2,620 4.8 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