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

Cricket Net Run Rate Calculator

Calculates cricket net run rate (NRR) from total runs and overs bowled versus runs conceded and overs faced across a tou...

basic

4,862 4.1 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

12,626 4.1 1 min

Everyday Life

Curtain Fabric Yardage Calculator

Compute the yards of fabric needed to make curtain panels for a window from the window width, panel length, fabric width...

basic

6,578 4.2 1 min

Everyday Life

Pool Pump Runtime by Volume Calculator

Compute the daily pool pump runtime needed to achieve a target number of complete water turnovers, from the pool volume...

basic

10,719 4.2 1 min

Sports

Plank Hold Percentile Calculator

Compute an approximate percentile rank for the maximum forearm-plank hold time, using a normal model fit to common adult...

basic

3,304 4.4 1 min

Construction / Materials

Topsoil Calculator

Compute the volume of topsoil needed to cover a rectangular bed to a target depth, plus the number of standard 40 L bags...

basic

15,719 4.1 1 min

Finance / Investing

Risk-Adjusted Discount Rate from Beta and Market Premium Calculator

Estimates a risk-adjusted discount rate for a project: RADR = Rf + β_project · (Rm − Rf). Compares to the company WACC t...

basic

19,915 4.5 1 min

Sports

D&D Spell Save DC Calculator

Compute a D&D 5e spell save DC and spell attack bonus from your level (for proficiency), and your spellcasting ability m...

basic

22,680 4.6 1 min

Conversions / Temperature

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

basic

2,006 4.3 1 min

Sports

Soccer Goals per 90 Minutes Calculator

Compute the standard rate stats used in modern football analytics — goals per 90 minutes, assists per 90, and goals + as...

basic

21,627 4.6 1 min

Everyday Life

Rainwater Tank Harvest Volume Calculator

Estimates rainwater collected in gallons from roof footprint, rainfall depth in inches, and collection efficiency.

basic

9,795 3.9 1 min

Everyday Life

Window-AC BTU Sizing from Room Area Calculator

Estimate the cooling capacity (BTU/hr) needed for a window-AC unit based on the EnergyStar rule of thumb of ~20 BTU/hr p...

basic

21,310 4.6 1 min

Showing 193 to 204 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

Cricket Net Run Rate Calculator

Slow Cooker Time from Oven Recipe Calculator

Curtain Fabric Yardage Calculator

Pool Pump Runtime by Volume Calculator

Plank Hold Percentile Calculator

Topsoil Calculator

Risk-Adjusted Discount Rate from Beta and Market Premium Calculator

D&D Spell Save DC Calculator

Temperature Converter

Soccer Goals per 90 Minutes Calculator

Rainwater Tank Harvest Volume Calculator

Window-AC BTU Sizing from Room Area Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost