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

Concrete Bags Needed Calculator

Compute how many bags of pre-mixed concrete are needed to fill a slab, footing, or column of given length, width, and de...

basic

1,618 3.9 1 min

Finance

Inventory Reorder Point from Lead Time and Demand Calculator

Calculates the reorder point ROP = (average daily demand) × (lead time in days) + safety stock, ensuring stock does not...

basic

18,124 4.7 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

17,265 4.6 1 min

Sports

Badminton Smash Shuttle Speed Calculator

Estimates the shuttle speed after a badminton smash from racket head speed and typical energy transfer coefficient.

basic

23,646 4.3 1 min

Health

Daily Water Intake Recommendation from Weight Calculator

Estimates recommended daily fluid intake: ≈ 30–35 mL/kg/day (baseline) + extra for exercise. Also shows cups (US) and fl...

basic

10,102 4.2 1 min

Food / Drinks

Cocktail ABV Calculator

Compute the final alcohol-by-volume (ABV) of a mixed drink from up to three alcoholic ingredients (each with their own A...

basic

3,470 4.1 1 min

Physics

Pipe Wall Thickness from Pressure and Material Calculator

Calculates minimum pipe wall thickness using the ASME Barlow / B31 formula from design pressure, pipe outer diameter, al...

basic

20,074 4.0 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

9,605 4.1 1 min

Construction / Rooms

Room Area Calculator

Get the floor area of a rectangular or L-shaped room in any common unit.

basic

18,470 4.7 1 min

Physics

Gravitational Field Strength Calculator

Calculates the gravitational field strength g at a distance r from the centre of a spherical body of mass M.

basic

1,602 4.2 1 min

Sports

Rowing 500-Metre Split Time from Power Output Calculator

Compute the 500-metre split time (sec/500 m) from power output in watts using the standard rowing ergometer equation: sp...

basic

18,620 4.1 1 min

Everyday Life

Tip Amount and Per-Person Bill Split Calculator

Calculates tip = bill × tip%, total = bill + tip, and share per person = total / number of people. Supports custom tip p...

basic

20,276 4.3 1 min

Showing 337 to 348 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

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Browse categories

Marcus Laurent

Concrete Bags Needed Calculator

Inventory Reorder Point from Lead Time and Demand Calculator

Square Footage Calculator

Badminton Smash Shuttle Speed Calculator

Daily Water Intake Recommendation from Weight Calculator

Cocktail ABV Calculator

Pipe Wall Thickness from Pressure and Material Calculator

Lawn Watering Time Calculator

Room Area Calculator

Gravitational Field Strength Calculator

Rowing 500-Metre Split Time from Power Output Calculator

Tip Amount and Per-Person Bill Split Calculator

Unit Conversion Without Typos: A Field Guide

Running Pace: How to Read Splits Without Getting Lost