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

TV Viewing Distance Calculator

Compute the recommended viewing distance for a TV from its diagonal screen size in inches and its resolution. 4K TVs all...

basic

24,626 4.1 1 min

Construction / Rooms

Roof Pitch Calculator

Convert between roof pitch (rise:run), angle in degrees, and rafter length using right-triangle math.

basic

662 5.0 1 min

Sports

Soccer Pythagorean Win Expectation Calculator

Compute the Pythagorean expected winning percentage of a soccer team from its goals-for and goals-against, using a confi...

basic

16,978 4.1 1 min

Everyday Life

Stairs Riser/Tread Count from Total Rise and Run Calculator

Compute the number of risers, individual riser height, individual tread depth, and total horizontal run for a flight of...

basic

21,453 4.6 1 min

Finance / Investing

CAGR Compound Annual Growth Rate Calculator

Calculates compound annual growth rate (CAGR) from starting value, ending value, and number of years.

basic

13,700 4.9 1 min

Sports

Soccer Shot Conversion Rate Calculator

Compute a player's or team's shot conversion rate over a defined window: conversion_rate = goals / shots. Top-flight str...

basic

5,207 4.6 1 min

Everyday Life

Water Heater Recovery Rate Calculator

Compute the recovery rate (gallons per hour) of a gas water heater from its BTU input rating, its efficiency, and the de...

basic

23,845 4.9 1 min

Everyday Life

Caulk Tube Coverage Calculator

Estimate how many linear feet (and how many 10-oz tubes) of caulk are needed for a given joint length and bead diameter,...

basic

17,115 4.2 1 min

Construction / Materials

Wallpaper Calculator

Estimate how many rolls of wallpaper you need to cover the walls of a rectangular room, with extra for pattern matching.

basic

875 4.6 1 min

Everyday Life

Attic Blown Insulation Depth Calculator

Calculates additional blown-in insulation depth needed to reach a target R-value from current insulation and material R-...

basic

2,742 4.7 1 min

Finance / Investing

IRR Investment Return Hurdle Calculator

Estimates Internal Rate of Return (IRR) using linear interpolation between two trial discount rates that bracket NPV = 0...

basic

1,076 4.9 1 min

Physics

RC Circuit Time Constant Calculator

Calculates the RC time constant and the capacitor voltage/charge at any elapsed time during charging or discharging.

basic

17,054 4.8 1 min

Showing 325 to 336 of 386 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

May 14, 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 24, 2026 3 min

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Marcus Laurent

TV Viewing Distance Calculator

Roof Pitch Calculator

Soccer Pythagorean Win Expectation Calculator

Stairs Riser/Tread Count from Total Rise and Run Calculator

CAGR Compound Annual Growth Rate Calculator

Soccer Shot Conversion Rate Calculator

Water Heater Recovery Rate Calculator

Caulk Tube Coverage Calculator

Wallpaper Calculator

Attic Blown Insulation Depth Calculator

IRR Investment Return Hurdle Calculator

RC Circuit Time Constant Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost