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

Health

Weight Loss Weeks to Goal from Deficit Calculator

Estimates the number of weeks needed to reach a weight loss goal based on the daily calorie deficit. Uses the 7,700 kcal...

basic

6,046 4.3 1 min

Statistics / Probability

Cantelli One-Sided Probability Bound Calculator

Applies the Cantelli inequality: P(X − μ ≥ kσ) ≤ 1/(1+k²), a tighter one-sided bound than Chebyshev. Also computes the t...

basic

21,435 4.5 1 min

Health

SOFA Sepsis-Organ Failure Assessment Score Calculator

Calculates the Sequential Organ Failure Assessment (SOFA) score from respiratory, coagulation, liver, cardiovascular, ne...

basic

1,162 4.6 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

11,450 4.3 1 min

Everyday Life

Coffee Grams per Cup by Brew Strength Calculator

Compute the grams of ground coffee needed for a given cup of brew at a chosen strength. Standard SCAA Golden Cup ratio i...

basic

23,146 4.5 1 min

Sports

Chess Position Material Balance Calculator

Compute the material balance of a chess position from the piece counts of both sides, using standard relative values: pa...

basic

9,036 4.9 1 min

Finance

Break-Even Units & Revenue Calculator

Calculates break-even point in units and revenue from fixed costs, selling price per unit, and variable cost per unit.

basic

3,340 4.3 1 min

Sports

Baseball Slugging Percentage (SLG) Calculator

Compute a batter's slugging percentage from singles, doubles, triples and home runs: SLG = (1B + 2·2B + 3·3B + 4·HR) / A...

basic

2,477 3.8 1 min

Everyday Life

Concrete Volume in Cubic Yards for a Slab Calculator

Compute the cubic yards of concrete needed to pour a rectangular slab from length, width, and thickness. (L_ft · W_ft ·...

basic

24,289 5.0 1 min

Sports

Baseball Runs Created Bill James Formula Calculator

Calculates Bill James's basic Runs Created (RC) statistic, which estimates the number of runs a batter contributes. Usef...

basic

1,293 4.2 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

1,199 4.8 1 min

Everyday Life

Baby Formula Scoops Calculator

Compute the number of scoops of powdered baby formula and the corresponding water volume needed for a target feed in oun...

basic

19,803 4.1 1 min

Showing 73 to 84 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

Weight Loss Weeks to Goal from Deficit Calculator

Cantelli One-Sided Probability Bound Calculator

SOFA Sepsis-Organ Failure Assessment Score Calculator

Wallpaper Calculator

Coffee Grams per Cup by Brew Strength Calculator

Chess Position Material Balance Calculator

Break-Even Units & Revenue Calculator

Baseball Slugging Percentage (SLG) Calculator

Concrete Volume in Cubic Yards for a Slab Calculator

Baseball Runs Created Bill James Formula Calculator

Water Heater Recovery Rate Calculator

Baby Formula Scoops Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost