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

Quartile Calculator

Compute the five-number summary (min, Q1, median, Q3, max), interquartile range, and 1.5×IQR outliers from a list of num...

basic
22,626 4.6 1 min
Math / Geometry

Cross Product Calculator

Compute the cross product (vector product) of two 3-dimensional vectors, plus its magnitude — useful for torque, angular...

basic
20,759 4.6 1 min
Conversions

Power Converter

Convert between common power units including watts, kilowatts, megawatts, horsepower, and BTU per hour.

basic
12,843 4.0 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.