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 / Tips

Tip Calculator

Calculate tips and split bills across any number of people.

Featured Trending basic

8,074 4.0 1 min

Everyday Life

Number of Steps to Calories Burned Calculator

Estimates calories burned from step count and body weight. Uses the general rule that a 70 kg person burns approximately...

basic

7,307 4.5 1 min

Everyday Life

Rope Working Load Calculator

Compute the safe working load limit (WLL) of a rope, sling, or chain from its rated breaking strength and a chosen safet...

basic

4,617 4.0 1 min

Food / Cooking

Recipe Scaling Calculator

Scale any recipe up or down by number of servings — every ingredient stays in the same proportion.

basic

7,471 4.7 1 min

Physics

Escape Velocity Calculator

Calculates the escape velocity from a planet or celestial body given its mass and radius.

basic

15,170 4.6 1 min

Health

AIMS65 Score for Upper-GI-Bleed In-Hospital Mortality Calculator

Compute the AIMS65 score for upper-GI-bleed in-hospital mortality. 1 point each for: Albumin < 3.0 g/dL; INR > 1.5; alte...

basic

13,008 4.0 1 min

Everyday Life

Roofing Underlayment Rolls Calculator

Compute the number of rolls of synthetic roofing underlayment needed for a roof, including 10 % overlap and waste, given...

basic

15,774 3.8 1 min

Construction / Rooms

Square Footage Calculator

Compute the square footage and square metres of a rectangular area from length and width — for floor plans, lots, garden...

basic

21,571 4.2 1 min

Food / Party Planning

Wedding Cake Servings Calculator

Compute the approximate number of standard wedding-cake servings from the diameters of up to 4 round tiers, using the Wi...

basic

1,142 4.2 1 min

Everyday Life

Flooring Box Calculator

Compute the number of boxes of laminate, vinyl, hardwood, or tile flooring needed to cover a room, given the room area,...

basic

12,330 3.9 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

10,463 4.2 1 min

Statistics

Geometric Distribution First-Success Trial Calculator

Calculates the probability of achieving the first success on exactly the k-th trial in a geometric distribution, plus me...

basic

18,229 4.8 1 min

Showing 145 to 156 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

Tip Calculator

Number of Steps to Calories Burned Calculator

Rope Working Load Calculator

Recipe Scaling Calculator

Escape Velocity Calculator

AIMS65 Score for Upper-GI-Bleed In-Hospital Mortality Calculator

Roofing Underlayment Rolls Calculator

Square Footage Calculator

Wedding Cake Servings Calculator

Flooring Box Calculator

Volleyball Hitting Percentage Calculator

Geometric Distribution First-Success Trial Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost