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

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

11,417 4.2 1 min

Finance

Revenue Growth Rate from Two Periods Calculator

Computes year-over-year revenue growth = (Rev₂ − Rev₁) / Rev₁ × 100%, and CAGR over n years = (Rev₂/Rev₁)^(1/n) − 1.

basic

9,637 4.6 1 min

Everyday Life

Christmas Light String Wattage Calculator

Compute the total watts and amps drawn by a Christmas / holiday lighting display: total_W = strings × bulbs_per_string ×...

basic

19,771 4.5 1 min

Physics / Mechanics

Stress, Strain & Young's Modulus Calculator

Calculates axial stress, strain, and deformation of a structural member from applied force, cross-sectional area, modulu...

basic

8,626 4.2 1 min

Sports

MLB Earned Run Average (ERA) Calculator

Compute a baseball pitcher's earned run average — the league's most widely-cited rate stat: ERA = (Earned runs · 9) / In...

basic

24,354 4.3 1 min

Food / Party Planning

Wine Bottles per Event Calculator

Compute the number of standard 750 mL wine bottles you should buy for an event, given the guest count, the average glass...

basic

14,306 4.0 1 min

Health

Calorie Burn by MET Activity Calculator

Calculates calories burned during any activity given its MET (Metabolic Equivalent of Task) value, body weight, and dura...

basic

14,915 3.9 1 min

Sports

NFL Yards per Attempt (Y/A and ANY/A) Calculator

Compute a quarterback's basic Y/A (passing yards per attempt) and the more complete Adjusted Net Y/A used in advanced fo...

basic

3,612 4.0 1 min

Sports

Volleyball Hitting Percentage Calculator

Compute the hitting percentage (a.k.a. attack efficiency) used in volleyball: hit% = (kills − errors) / total_attacks. N...

basic

14,542 4.1 1 min

Everyday Life

Cold Brew Coffee Ratio Calculator

Compute the coffee-to-water ratio for cold brew. Concentrate: 1:4 to 1:5; ready-to-drink: 1:8 to 1:12. Returns the grams...

basic

13,294 4.0 1 min

Health

Serum Anion Gap (Metabolic Acidosis) Calculator

Calculates the serum anion gap and applies Winter's correction for albumin. Helps differentiate causes of metabolic acid...

basic

6,638 4.0 1 min

Health

Fractional Excretion of Urea (FeUrea) Calculator

Calculates FeUrea = (urine urea × serum creatinine) / (serum urea × urine creatinine) × 100%. FeUrea < 35% suggests pre-...

basic

12,416 4.8 1 min

Showing 217 to 228 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

Caulk Tube Coverage Calculator

Revenue Growth Rate from Two Periods Calculator

Christmas Light String Wattage Calculator

Stress, Strain & Young's Modulus Calculator

MLB Earned Run Average (ERA) Calculator

Wine Bottles per Event Calculator

Calorie Burn by MET Activity Calculator

NFL Yards per Attempt (Y/A and ANY/A) Calculator

Volleyball Hitting Percentage Calculator

Cold Brew Coffee Ratio Calculator

Serum Anion Gap (Metabolic Acidosis) Calculator

Fractional Excretion of Urea (FeUrea) Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost