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The GG Network blog — page 5

Free lessons that leave you a little sharper every visit — plus deep guides to the professional tools. Knowledge shouldn't sit behind a paywall.

All postsMoney & Finance (58)Home & Renting (7)Work & Business (39)Security & Privacy (24)Law & Life Admin (13)Everyday Maths (92)Health & Fitness Numbers (27)Building for the Web (24)Dates & Time (8)Benefits & Support (4)Data & Spreadsheets (22)Care & Communication (10)Bereavement & Preparedness (5)Home, Pets & Family (22)Shared Living & Splitting Up Costs (5)The Tools (36)
Acres vs. square feet: comparing two lot listings by hand
2026-09-29 · 1 min read

One listing gives the lot in acres, another in square feet — they can't be compared until they're in the same unit, and the conversion is one multiplication or division away.

real-estateconvertershomemoney
Degrees to radians: the conversion behind a roof-pitch angle
2026-09-29 · 1 min read

Most tools and specs give angles in degrees, but the math behind CAD, trigonometry and many calculators runs in radians — the conversion is one multiplication by a fixed constant.

convertershomedevmath
BMR vs. TDEE: the Mifflin-St Jeor formula, worked by hand
2026-09-28 · 2 min read

BMR is what your body burns lying still; TDEE scales that up for the life you actually live — and the whole calculation is five multiplications you can do on paper.

healthfitness
From a calorie target to grams: the macro-split arithmetic
2026-09-28 · 1 min read

Once you have a daily calorie number, splitting it into protein, carb and fat grams is four multiplications and two divisions — the same math whichever percentages you pick.

healthfitness
FIFO vs. LIFO cost basis: the same sale, two different gains
2026-09-27 · 2 min read

Which lots a sale is matched against changes the realized gain and can flip a sale between short-term and long-term — the shares sold never change, only which ones you say they were.

taxinvestingmoneypersonal-finance
Refinancing into a longer term: check lifetime interest, not just the payment
2026-09-27 · 2 min read

A lower rate on a longer remaining term almost always lowers the monthly payment — it doesn't always lower what you pay in total, and the two numbers can point in opposite directions on the same refinance.

mortgageloanspersonal-financemoney
The wash-sale rule: the 61-day window and the partial-match math
2026-09-26 · 3 min read

A loss sale is worth reviewing for a wash sale if you bought the same symbol anywhere from 30 days before to 30 days after — and a partial repurchase only flags a proportional slice of the loss.

taxinvestingmoneypersonal-finance
How an ARM actually resets: the three caps, in order
2026-09-26 · 3 min read

An adjustable-rate mortgage doesn't reset to whatever the index says — it resets to whatever survives the initial cap or periodic cap, and then the lifetime cap on top, applied in that order.

mortgageloanspersonal-financemoney
Earthwork cut & fill: the average-end-area method
2026-09-25 · 2 min read

Estimating how much dirt a trench or grading job moves comes down to two cross-section areas, a distance, and a swell allowance — here's the formula and a worked run.

businesstradesconstructionmathestimating
Pricing a powder-coating job: the real cost per part
2026-09-25 · 2 min read

A powder-coat quote is coating material plus labour plus setup, scaled for waste and marked up to a margin — skip a line and you're coating for free.

businesstradesestimatingmoney
Should you pay points on a mortgage? The break-even math
2026-09-24 · 3 min read

Paying upfront points for a lower rate only wins if you keep the loan past the break-even month — two payment formulas and one division answer it for your own numbers.

mortgageloanspersonal-financemoneybusiness
What a car really costs: total ownership, not the sticker price
2026-09-24 · 2 min read

The cheaper car on paper can cost more to own once depreciation, finance interest, insurance, fuel and servicing are added up — here's the arithmetic that catches it before you sign.

moneybusinesspersonal-financecar
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