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

Proportion Calculator

Solve a proportion a/b = c/d for any one of the four values, given the other three.

basic
10,928 4.4 1 min
Math / Geometry

Polar to Cartesian Converter

Convert a polar coordinate (r, θ) into the Cartesian coordinate (x, y) = (r cos θ, r sin θ), with θ entered in degrees.

basic
21,499 3.8 1 min
Physics / Mechanics

Density Calculator

Compute density (ρ = m/V), or rearrange the formula to solve for mass or volume given the other two.

basic
19,171 4.0 1 min
Physics / Mechanics

Momentum Calculator

Compute the linear momentum of a moving object as the product of its mass and velocity.

basic
21,711 4.4 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