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Decisions
Use these when you are weighing one routine against another: walking or driving, train or car, four working days or five, cooking or ordering in, replacing an old appliance or keeping it. Each page puts the two options side by side using your own costs and times, then shows the difference over a week, a year and longer. Start with the decision you are actually making this month. The results show what changes; the choice is yours.
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What if I walked instead of drove?
Compare walking a repeated local journey with driving it, using your distance, weekly rhythm and a simplified cost per kilometre.
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14 interactive experiments.
What if I walked instead of drove?
Compare walking a repeated local journey with driving it, using your distance, weekly rhythm and a simplified cost per kilometre.
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What If You Gained One Extra Hour Every Day?
See how 30 minutes or an hour a day, gained or lost, becomes hours, days and years over a chosen horizon.
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How Much of Your Life Is Weekends?
See the share of a lifetime that falls on rest days, with an optional UK bank-holiday boost.
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What If I Cut My Spending by 10%?
Apply a percentage trim to a monthly spend figure and see the pounds that would be freed.
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What If I Saved My Coffee Money?
Price a regular coffee or takeaway habit over the years, and see what the same money could become if you saved it.
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What if I stopped using my car?
Add up fuel, insurance, parking, maintenance and extras for a year, then see what remains if you still own the car.
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What if I worked four days a week?
A calendar comparison of two working patterns after holiday weeks — not a claim about pay, rights or productivity.
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What if I worked from home one more day?
Compare the estimated commuting time and day-cost of adding between one and four home-working days each week.
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What if I reduced my home heating?
Apply a reduction you choose to a monthly heating cost and a heating season you choose. Not a universal saving.
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Petrol vs electric running cost
Compare petrol and electricity running costs from mileage, mpg, miles per kWh and unit prices. Purchase stays off unless you add it.
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What if I cooked at home more?
Compare takeaway and home-cooked meal prices for the number of weekly swaps you choose, then let the gap run for years.
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Train vs driving
Put a driving cost per mile, parking and car sharing next to a train ticket and two journey times. Uses October 2026 UK fuel prices and mileage rates.
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What if I replaced an old appliance?
Compare kilowatt-hours, a unit rate and a purchase price over a number of years. Every figure is an estimate.
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What if I bought less and reused more?
A replacement-cycle calculator: item cost, how often you buy now, how often you would buy if you reused more, and years.
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