Guides & explainers
The reasoning behind the tools. How percentages actually work, what a loan really costs, why BMI misleads, and how to pick a password that holds up. Written to answer the question, then get out of the way.
Cooking How Many Grams Is a Tablespoon?
A tablespoon is 15 ml, but grams depend on what is in it: 15 g of water, 13 g of oil, about 8 g of flour, 12 g of sugar. Why volume to weight is ingredient-specific, with a table.
Health How Many Steps a Day Do I Really Need?
Ten thousand steps came from a 1960s pedometer marketing campaign. Research puts the health benefit at roughly 7,000 to 8,000, with most of the gain in the first few thousand.
Work How Many Working Days Are in a Year?
A standard year has 260 weekdays, or 261 in some leap years. Subtract eight bank holidays and typical annual leave and the number of days actually worked is around 2.
Health How Much Caffeine Is in a Cup of Tea vs Coffee?
A mug of tea has about 47 mg of caffeine, a mug of filter coffee around 140 mg, and an espresso about 65 mg. Brewing time and size change all of these more than people expect.
Money How Much Do I Need to Retire?
Most estimates land between 20 and 25 times your annual spending in retirement, before the State Pension. Here is how the multiple works and what changes it.
Money How Much Does a Car Really Cost Per Year?
Fuel is the cost people track and usually not the largest one. Depreciation, insurance, servicing, tax and parking put most cars at several thousand a year.
Home How Much Does a Shower Cost?
An eight-minute shower costs roughly 30 to 60p in energy and water on a typical tariff, depending on the heater type.
Home How Much Does It Cost to Leave a Light On All Night?
An LED bulb left on for eight hours costs about 2p. An old incandescent costs around 12p. The habit that matters is not the landing light, it is the heating and the appliances.
Home How Much Does It Cost to Run a Tumble Dryer?
A vented or condenser dryer uses 2 to 4 kWh per load, roughly 50p to a pound at current unit rates. Heat pump models use about a third of that. The arithmetic and the alternatives.
Money How Much of My Income Should Go on Rent?
The 30 percent rule is seventy years old and assumed cheaper housing. Here is what the rule actually meant, what people pay now, and a better way to set your ceiling.
Health How Much Protein Do I Need a Day?
The baseline is about 0.75 grams per kilogram of body weight, and most people already exceed it. Training, ageing and weight loss raise the useful amount. What the numbers mean.
Money How Much Should I Have Saved by 30?
The common rule is one year's salary by 30, and most people are nowhere near it. Here is where the rule comes from, why it misleads, and a target that actually helps.
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