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

Vehicle Monthly Fuel Cost from Miles and MPG Calculator

Estimates monthly and annual fuel cost: monthly cost = (monthly miles / MPG) × price per gallon. Also converts between M...

basic

17,097 4.5 1 min

Sports

Baseball Slugging Percentage (SLG) Calculator

Compute a batter's slugging percentage from singles, doubles, triples and home runs: SLG = (1B + 2·2B + 3·3B + 4·HR) / A...

basic

5,886 4.8 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

17,680 4.6 1 min

Everyday Life

Daily Pet Food (kcal) from Pet Weight and Activity Level Calculator

Estimate the daily caloric needs (DER, daily energy requirement) for a dog or cat: resting energy requirement RER = 70 ·...

basic

8,377 4.1 1 min

Physics

Pressure Vessel Hoop Stress Calculator

Calculates hoop (circumferential) stress and longitudinal stress in a thin-walled pressure vessel from internal pressure...

basic

975 3.8 1 min

Finance

Home Affordability from Income and Expenses Calculator

Estimates the maximum home price based on: monthly income × 28% (PITI limit) → maximum monthly payment → maximum mortgag...

basic

21,081 4.0 1 min

Everyday Life

Concrete Volume in Cubic Yards for a Slab Calculator

Compute the cubic yards of concrete needed to pour a rectangular slab from length, width, and thickness. (L_ft · W_ft ·...

basic

19,657 4.7 1 min

Everyday Life

Propane-Tank Burn Time from BTU Rating Calculator

Compute the burn time of a propane tank given its size in gallons and the appliance's BTU/hr rating. 1 US gallon of liqu...

basic

9,446 4.5 1 min

Physics / Mechanics

Impulse-Momentum Theorem Calculator

Calculates impulse, change in momentum, and average force from mass, initial/final velocity, and contact time.

basic

16,214 4.4 1 min

Physics

Flywheel Stored Energy & RPM Calculator

Calculates the kinetic energy stored in a flywheel from its moment of inertia and rotational speed, and the usable energ...

basic

5,794 4.9 1 min

Sports

Calorie Burn from MET and Body Weight Calculator

Compute calories burned during exercise from the MET (metabolic equivalent) value of the activity, body weight in kg, an...

basic

9,038 4.6 1 min

Everyday Life

Lawn Watering Time Calculator

Compute how many minutes a sprinkler needs to run to deliver a given depth of water (typically 1 inch / week) over a law...

basic

6,108 4.3 1 min

Showing 349 to 360 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

Vehicle Monthly Fuel Cost from Miles and MPG Calculator

Baseball Slugging Percentage (SLG) Calculator

Swim Pace Calculator

Daily Pet Food (kcal) from Pet Weight and Activity Level Calculator

Pressure Vessel Hoop Stress Calculator

Home Affordability from Income and Expenses Calculator

Concrete Volume in Cubic Yards for a Slab Calculator

Propane-Tank Burn Time from BTU Rating Calculator

Impulse-Momentum Theorem Calculator

Flywheel Stored Energy & RPM Calculator

Calorie Burn from MET and Body Weight Calculator

Lawn Watering Time Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost