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 / Geometry

Inverse Trigonometry Calculator

Compute the inverse-sine, inverse-cosine, and inverse-tangent of a value, returning the result in both radians and degre...

basic
1,598 4.4 1 min
Math / Percentage

Percentage Difference Calculator

Compute the percentage difference between two values using the absolute difference divided by their average — useful whe...

basic
20,766 4.6 1 min
Math

2 × 2 Matrix Multiplication Calculator

Compute the 2×2 matrix product C = A · B from the eight scalar entries: c₁₁ = a₁₁·b₁₁ + a₁₂·b₂₁; c₁₂ = a₁₁·b₁₂ + a₁₂·b₂₂...

basic
9,269 4.5 1 min
Math / Percentage

Odds to Probability Converter

Convert betting odds expressed as "X to Y for the event" into the implied probability of the event occurring, with the c...

basic
4,307 4.7 1 min
Other

Age in Days Calculator

Compute a person's (or anything's) precise age in days, weeks, whole months, whole years, and total hours from a date of...

basic
13,277 4.1 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