BEng Civil Engineering; 8 years in project management.

Marcus Laurent

Contributor, Construction & Everyday Life

0 calculators 0 articles Member since Jun 2026

About

Marcus focuses on the "practical math" calculators: home projects, construction, fuel, and travel. His goal is simple — give the reader a number they can actually use on site or on the road in under 30 seconds.

Before writing full-time, he spent eight years in infrastructure and residential construction project management.

Areas of expertise

Construction math Home projects Travel planning Fuel economy

Education & credentials

BEng Civil Engineering — Polytechnique Montréal

Everyday Life

Carpet & Padding Area Calculator

Compute the carpet (and padding) needed to cover a rectangular room, in square yards, with a chosen waste allowance for...

basic

10,126 4.6 1 min

Sports

NBA Assist-to-Turnover Ratio Calculator

Compute the NBA assist-to-turnover ratio — the basic point-guard efficiency stat: AST / TO. Career elite point guards av...

basic

24,960 4.2 1 min

Math / Percentage

Law of Cosines: Unknown Side or Angle Calculator

Applies the law of cosines c² = a² + b² − 2ab·cos C to find an unknown side or angle in any triangle. Also computes the...

basic

2,714 4.0 1 min

Sports

Cycling W' (Anaerobic Capacity) from Two-Effort CP Test Calculator

Compute Critical Power (CP) and the work-capacity above CP, W' (in joules) from a 2-effort all-out test (typically a 3-m...

basic

20,320 5.0 1 min

Sports

D&D Spell Save DC Calculator

Compute a D&D 5e spell save DC and spell attack bonus from your level (for proficiency), and your spellcasting ability m...

basic

1,139 4.4 1 min

Physics

Thin Lens Focal Length and Image Magnification Calculator

Applies the thin lens equation 1/f = 1/d_o + 1/d_i to find image distance and magnification m = −d_i/d_o. Also indicates...

basic

4,528 4.8 1 min

Finance

Debt Service Coverage Ratio (DSCR) from NOI Calculator

Calculates DSCR = Net Operating Income / Annual Debt Service. A DSCR > 1 means the property or business generates enough...

basic

7,896 4.7 1 min

Sports

MTG London Mulligan Lands Probability Calculator

Compute the hypergeometric probability of drawing exactly k lands in a 7-card opening hand from a deck of size N contain...

basic

8,955 4.0 1 min

Everyday Life

Curtain Fabric Yardage Calculator

Compute the yards of fabric needed to make curtain panels for a window from the window width, panel length, fabric width...

basic

4,956 4.9 1 min

Everyday Life

Paint Mix Ratio Calculator

Compute the volume of each component (base, hardener, reducer) required to mix a target total volume of paint at a given...

basic

20,025 4.0 1 min

Sports

Cycling Power Zones (Coggan) Calculator

Generate the seven Coggan power-training zones (Active recovery → Neuromuscular) as percentages of your Functional Thres...

basic

16,536 3.9 1 min

Physics

Flywheel Stored Energy & RPM Calculator

Calculates the kinetic energy stored in a flywheel from its moment of inertia and rotational speed, and the usable energ...

basic

13,709 4.8 1 min

Showing 121 to 132 of 359 results

guide Conversions

Unit Conversion Without Typos: A Field Guide

Most unit-conversion mistakes are dumb mistakes — swapped factors, dropped decimals, wrong direction. A short guide to not making them.

Marcus Laurent

Mar 10, 2026 3 min

tutorial Fitness

Running Pace: How to Read Splits Without Getting Lost

Pace, splits, and goal times talk about the same thing from three different angles. A short guide to keeping them straight mid-race.

Marcus Laurent

Jan 30, 2026 3 min

Calcify

Browse categories

Marcus Laurent

Carpet & Padding Area Calculator

NBA Assist-to-Turnover Ratio Calculator

Law of Cosines: Unknown Side or Angle Calculator

Cycling W' (Anaerobic Capacity) from Two-Effort CP Test Calculator

D&D Spell Save DC Calculator

Thin Lens Focal Length and Image Magnification Calculator

Debt Service Coverage Ratio (DSCR) from NOI Calculator

MTG London Mulligan Lands Probability Calculator

Curtain Fabric Yardage Calculator

Paint Mix Ratio Calculator

Cycling Power Zones (Coggan) Calculator

Flywheel Stored Energy & RPM Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost