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

22,073 4.1 1 min

Physics

Single Slit Diffraction Minimum Angle Calculator

Calculates the angular positions of diffraction minima (dark fringes) for single-slit Fraunhofer diffraction. Each order...

basic

8,028 4.4 1 min

Everyday Life

Electric Vehicle Charging Time and Cost Calculator

Estimate EV charging time and electricity cost from battery size, current and target state-of-charge, charger power (kW)...

basic

16,391 5.0 1 min

Everyday Life

Pool Spa Chlorine PPM Dose Calculator

Calculates the weight of chlorine product needed to raise pool or spa water to a target free-chlorine ppm from volume an...

basic

10,834 5.0 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

7,549 4.7 1 min

Sports

Hockey Shooting Percentage from Shots Calculator

Compute a hockey skater's shooting percentage: S% = goals / shots on goal × 100. Forwards league-wide hover around 9-12...

basic

11,633 4.2 1 min

Physics

Beat Frequency from Two Sound Sources Calculator

Calculates the beat frequency f_beat = |f₁ − f₂| when two sound waves of slightly different frequencies are superimposed...

basic

1,750 4.6 1 min

Everyday Life

Stair Stringer Calculator

Compute the number of steps, individual riser height, individual tread depth, and the diagonal stringer length for a sta...

basic

24,223 4.8 1 min

Construction / Materials

Baseboard Calculator

Compute the linear metres of baseboard or skirting needed for a rectangular room, accounting for door openings and a sma...

basic

13,153 3.8 1 min

Health

Fagerström Nicotine Dependence Score Calculator

Computes the Fagerström Test for Nicotine Dependence (FTND) from 6 questions. Score 0–2 = very low; 3–4 = low; 5 = mediu...

basic

914 4.7 1 min

Sports

Board Game Time Per Player Calculator

Estimate the total play time of a board game from a base setup time, an additional minutes-per-player factor, and an opt...

basic

1,781 4.9 1 min

Construction / Materials

Sand Calculator

Compute the volume and approximate weight of sand needed to fill a rectangular area to a chosen depth.

basic

17,871 4.7 1 min

Showing 253 to 264 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

Best Free Calculator

Browse categories

Marcus Laurent

Concrete Calculator

Single Slit Diffraction Minimum Angle Calculator

Electric Vehicle Charging Time and Cost Calculator

Pool Spa Chlorine PPM Dose Calculator

Calorie Burn by MET Activity Calculator

Hockey Shooting Percentage from Shots Calculator

Beat Frequency from Two Sound Sources Calculator

Stair Stringer Calculator

Baseboard Calculator

Fagerström Nicotine Dependence Score Calculator

Board Game Time Per Player Calculator

Sand Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost