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

Construction / Materials

Concrete Calculator

Volume of concrete needed for a slab, footing, or column — with a suggested overage buffer to avoid running short.

Featured basic

17,437 4.3 1 min

Health

HbA1c to Average Glucose Calculator

Converts HbA1c percentage to estimated average glucose (eAG) in mg/dL and mmol/L using the ADAG study formula.

basic

3,257 4.4 1 min

Finance

Dividend Discount Model Intrinsic Value Calculator

Calculates the intrinsic value of a stock using the single-stage dividend discount model (Gordon Growth Model) from next...

basic

6,363 4.9 1 min

Sports / Running

Marathon Negative Split Target Pace Calculator

Calculates first-half and second-half target paces for a marathon negative split strategy from goal finish time and spli...

basic

21,468 3.9 1 min

Sports

Tennis Tiebreak Win Odds Calculator

Calculates the probability of winning a 7-point tennis tiebreak given the probability of winning any individual point.

basic

20,134 4.1 1 min

Everyday Life

Driveway Seal-Coat Gallons Needed Calculator

Compute the gallons of asphalt seal-coat needed to cover a driveway, given the area in square feet, the planned number o...

basic

13,250 3.9 1 min

Everyday Life

Sand Tonnage Calculator

Compute the tons of sand needed to cover an area at a target depth, using a typical density of 1.35 tons per cubic yard...

basic

14,963 4.0 1 min

Health

Hamilton Anxiety Rating Scale (HAM-A) Calculator

Calculates the HAM-A total from 14 symptom groups (anxious mood, tension, fears, insomnia, concentration, depressed mood...

basic

1,365 4.7 1 min

Sports

Baseball OPS (On-Base Plus Slugging) Calculator

Compute a batter's OPS from raw plate-appearance stats: OBP = (H + BB + HBP) / (AB + BB + HBP + SF); SLG = (1B + 2·2B +...

basic

7,802 4.0 1 min

Everyday Life

Slow Cooker Time from Oven Recipe Calculator

Convert a conventional oven recipe time to the equivalent slow-cooker time. Rule of thumb: 30 min in a 350 °F oven ≈ 6.5...

basic

11,624 4.0 1 min

Health

ROX Index for High-Flow Nasal Cannula Failure Prediction Calculator

Compute the ROX index, a validated tool for predicting high-flow nasal cannula (HFNC) failure in acute hypoxaemic respir...

basic

5,566 4.2 1 min

Sports

Swim Pace Calculator

Convert a swim split (time and distance) into pace per 100 m, pace per 100 yd, and average swim speed in m/s.

basic

6,389 4.5 1 min

Showing 133 to 144 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

Concrete Calculator

HbA1c to Average Glucose Calculator

Dividend Discount Model Intrinsic Value Calculator

Marathon Negative Split Target Pace Calculator

Tennis Tiebreak Win Odds Calculator

Driveway Seal-Coat Gallons Needed Calculator

Sand Tonnage Calculator

Hamilton Anxiety Rating Scale (HAM-A) Calculator

Baseball OPS (On-Base Plus Slugging) Calculator

Slow Cooker Time from Oven Recipe Calculator

ROX Index for High-Flow Nasal Cannula Failure Prediction Calculator

Swim Pace Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost