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

Square Calculator

Get the area, perimeter, and diagonal of a square from its side length.

basic
8,871 4.2 1 min
Chemistry / Solutions

Charles's Law Calculator

Find the missing volume or temperature in Charles's law (V₁/T₁ = V₂/T₂) for an ideal gas at constant pressure.

basic
7,731 4.2 1 min
Math

Tetrahedral Number Calculator

Compute the n-th tetrahedral number Te_n = n(n + 1)(n + 2) / 6 — the number of stacked spheres in a tetrahedron with n s...

basic
23,278 4.3 1 min
Physics / Mechanics

Snell's Law Calculator

Compute the angle of refraction when light passes from a medium of refractive index n₁ into a medium of refractive index...

basic
6,164 4.2 1 min
Physics / Mechanics

Pendulum Period Calculator

Compute the period and frequency of a simple (small-angle) pendulum from its length and the local acceleration due to gr...

basic
5,228 4.0 1 min
Math / Percentage

GCD and LCM Calculator

Compute the greatest common divisor (GCD) and the least common multiple (LCM) of two positive integers using the Euclide...

basic
18,290 4.8 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