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

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

19,009 4.1 1 min

Food / Party Planning

Pizza Party Calculator

How many pizzas do you need for a given number of guests, slice appetite, and pizza size.

Trending basic

19,356 5.0 1 min

Statistics / Descriptive

Interquartile Range and Five-Number Summary Calculator

Given Q1, median, Q3, min, and max, calculates IQR = Q3 − Q1, inner fences (Q1 − 1.5×IQR, Q3 + 1.5×IQR) for outlier dete...

basic

12,429 4.2 1 min

Math

Fibonacci Nth Term and Sum Calculator

Calculates the nth Fibonacci number using Binet's closed-form formula and the sum of the first n Fibonacci numbers (S_n...

basic

4,105 4.7 1 min

Finance

EBITDA from Operating Income and Depreciation & Amortisation Calculator

Compute EBITDA (Earnings Before Interest, Taxes, Depreciation & Amortisation) from operating income (EBIT) and the D&A c...

basic

5,560 4.5 1 min

Everyday Life

Wood Stain Coverage Area Calculator

Compute the gallons (and quarts) of wood stain needed for a deck or fence. Wood absorbs more stain than paint; typical c...

basic

12,965 4.1 1 min

Everyday Life

Snow Load on Roof Calculator

Estimate the snow load on a roof from the snow depth and snow density: load (lb/ft²) = depth (in) · density / 12. Report...

basic

3,478 4.4 1 min

Sports / Cycling

Energy Expenditure from Cycling Power and Duration Calculator

Calculates energy expenditure: kJ = power(W) × duration(s) / 1000. At ~22% efficiency, kcal ≈ kJ × (1/4.184) / 0.22 = kJ...

basic

4,801 4.1 1 min

Sports

Cycling Calorie Burn Calculator

Estimate calories burned cycling from a chosen MET (metabolic equivalent) value for the intensity, your weight, and the...

basic

9,164 4.7 1 min

Finance

Safety Stock from Demand Variability and Lead Time Calculator

Calculates safety stock = z × σ_demand × √LT, where z is the service-level z-score (e.g., 1.65 for 95%), σ_demand is the...

basic

24,773 4.1 1 min

Sports

Boston Marathon Qualifying Pace from Age and Gender Calculator

Look up the official Boston Athletic Association Boston-marathon qualifying time (per current rules) for the runner's ag...

basic

4,175 4.6 1 min

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Showing 349 to 359 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

Soccer Pythagorean Win Expectation Calculator

Pizza Party Calculator

Interquartile Range and Five-Number Summary Calculator

Fibonacci Nth Term and Sum Calculator

EBITDA from Operating Income and Depreciation & Amortisation Calculator

Wood Stain Coverage Area Calculator

Snow Load on Roof Calculator

Energy Expenditure from Cycling Power and Duration Calculator

Cycling Calorie Burn Calculator

Safety Stock from Demand Variability and Lead Time Calculator

Boston Marathon Qualifying Pace from Age and Gender Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost