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
Math / Percentage

Percent Change Calculator

Compute the percent change between an old value and a new value, with the absolute difference and direction.

basic
23,975 4.2 1 min
Math / Fractions

GCF Calculator

Find the greatest common factor (also called GCD) of any list of whole numbers using the Euclidean algorithm.

basic
17,757 4.3 1 min
Math / Percentage

Number Base Converter

Convert a number written in any base from 2 to 36 into any other base from 2 to 36, with companion outputs in binary, oc...

basic
15,956 4.7 1 min
Ecology

Heat Index Calculator

Compute the heat index — the apparent temperature combining air temperature and relative humidity — using the NWS Rothfu...

basic
4,838 4.2 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