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

Dog Years Calculator

Estimate the human-equivalent age of a dog using a size-aware formula that accounts for breed weight class.

basic
24,852 4.2 1 min
Math / Percentage

Logarithm Calculator

Compute the logarithm of any positive number in any base — change-of-base formula included.

basic
8,721 4.0 1 min
Math / Percentage

Midrange Calculator

Compute the midrange of a list of numbers — the simple average of the smallest and largest values.

basic
6,753 4.9 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.