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

Climbing Grade French → Yosemite Decimal Converter Calculator

Convert a French sport-climbing grade entered as a numeric proxy (e.g. 5.0 = French 5a, 6.0 = 6a, 6.5 = 6b, 7.0 = 7a, 7....

basic

401 4.7 1 min

Everyday Life

TV Viewing Distance Calculator

Compute the recommended viewing distance for a TV from its diagonal screen size in inches and its resolution. 4K TVs all...

basic

8,973 4.6 1 min

Sports

Baseball Fielding Percentage Calculator

Compute a baseball player's fielding percentage — the share of fielding chances cleanly converted: FP = (putouts + assis...

basic

1,924 4.7 1 min

Finance / Investing

IRR Investment Return Hurdle Calculator

Estimates Internal Rate of Return (IRR) using linear interpolation between two trial discount rates that bracket NPV = 0...

basic

23,653 4.0 1 min

Physics

RC Circuit Time Constant and Voltage Decay Calculator

Calculates RC time constant τ = R·C, voltage at time t: V(t) = V₀·e^(−t/τ), charge remaining Q(t), and the time to reach...

basic

16,827 4.6 1 min

Everyday Life

LED vs Incandescent Bulb Annual Savings Calculator

Compute the yearly energy and dollar savings from replacing an incandescent bulb with an equivalent-output LED. Inputs:...

basic

8,526 4.2 1 min

Physics / Mechanics

Angled Launch: Maximum Range and Apex Calculator

Calculates projectile range R = v₀²·sin(2θ)/g, maximum height H = v₀²·sin²θ/(2g), time of flight T = 2v₀·sin θ/g, and op...

basic

6,186 4.3 1 min

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

20,139 4.3 1 min

Sports

Yahtzee Large Straight Odds Calculator

Compute the probability of rolling a Yahtzee large straight (1-2-3-4-5 or 2-3-4-5-6) in N attempts of a single full re-r...

basic

16,477 4.0 1 min

Everyday Life

Swimming Pool Fill Time Calculator

Estimate how long it will take to fill a swimming pool from a garden hose, given the pool volume in gallons and the hose...

basic

11,110 4.2 1 min

Everyday Life

Tile Floor Coverage with Waste Calculator

Compute the number of square tiles needed to cover a floor, including a waste allowance for cuts and breakage. tiles = c...

basic

4,737 4.0 1 min

Everyday Life / Travel

Road Trip Fuel Cost Calculator

Calculates total fuel cost, gallons used, and cost per mile for a road trip from distance, fuel economy, and fuel price.

basic

1,083 4.2 1 min

Showing 205 to 216 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

Climbing Grade French → Yosemite Decimal Converter Calculator

TV Viewing Distance Calculator

Baseball Fielding Percentage Calculator

IRR Investment Return Hurdle Calculator

RC Circuit Time Constant and Voltage Decay Calculator

LED vs Incandescent Bulb Annual Savings Calculator

Angled Launch: Maximum Range and Apex Calculator

Vehicle Monthly Fuel Cost from Miles and MPG Calculator

Yahtzee Large Straight Odds Calculator

Swimming Pool Fill Time Calculator

Tile Floor Coverage with Waste Calculator

Road Trip Fuel Cost Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost