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

Grass Seed Quantity for Lawn Calculator

Compute the pounds of grass seed needed to seed (new) or overseed (existing) a lawn from the total area and the recommen...

basic

20,520 4.0 1 min

Construction / Rooms

Pool Volume Calculator

Compute the water volume of a rectangular pool from length, width, and average depth, in cubic metres, litres, and US ga...

basic

5,445 4.8 1 min

Physics

Pressure Vessel Hoop Stress Calculator

Calculates hoop (circumferential) stress and longitudinal stress in a thin-walled pressure vessel from internal pressure...

basic

8,040 4.0 1 min

Physics

Darcy-Weisbach Friction Head Loss Calculator

Calculates friction head loss in a pipe from Darcy friction factor, pipe length, diameter, and flow velocity.

basic

18,082 4.2 1 min

Everyday Life

Fence Posts Needed Calculator

Compute the number of fence posts needed for a rectangular yard from the perimeter, the desired post spacing, and the nu...

basic

18,763 4.5 1 min

Food / Baking

Baker's Percentage Calculator

Professional bread math — every ingredient is expressed as a percentage of the flour weight.

basic

22,040 4.0 1 min

Sports

Shot Put Throw Distance from Launch Speed and Angle Calculator

Compute the range of a shot put projected at launch speed v₀ and angle θ above horizontal, launched from a height h abov...

basic

17,715 4.0 1 min

Health

Wells Score for Pulmonary Embolism (PE) Calculator

Calculates the Wells PE score from 7 clinical criteria. Score ≤ 4 = PE unlikely, > 4 = PE likely. Can guide D-dimer and...

basic

8,400 4.1 1 min

Health

Duke Activity Status Index (DASI / METs) Calculator

The DASI questionnaire estimates peak oxygen uptake (VO₂ peak) and functional capacity in METs from 12 weighted activity...

basic

17,107 4.6 1 min

Statistics

Chi-Square Independence Test Calculator

Calculates the chi-square statistic for a 2×2 contingency table to test for independence between two categorical variabl...

basic

21,984 4.2 1 min

Everyday Life

Paint Thinner Mix Ratio Calculator

Compute how much thinner to add to a paint base for a given thinner-to-paint ratio (commonly 10 % for spray-gun viscosit...

basic

22,899 4.7 1 min

Everyday Life

Meat Brine Salt Quantity Calculator

Compute the amount of salt to dissolve in water for a wet brine, given the water volume and a target salt percentage by...

basic

21,570 4.1 1 min

Showing 289 to 300 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

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Browse categories

Marcus Laurent

Grass Seed Quantity for Lawn Calculator

Pool Volume Calculator

Pressure Vessel Hoop Stress Calculator

Darcy-Weisbach Friction Head Loss Calculator

Fence Posts Needed Calculator

Baker's Percentage Calculator

Shot Put Throw Distance from Launch Speed and Angle Calculator

Wells Score for Pulmonary Embolism (PE) Calculator

Duke Activity Status Index (DASI / METs) Calculator

Chi-Square Independence Test Calculator

Paint Thinner Mix Ratio Calculator

Meat Brine Salt Quantity Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost