Major Purchases Calculators

3D Printer ROI Calculator

Calculate ROI on a 3D printer from purchase price, filament cost, and equivalent retail savings per print, with months until break-even.

Air Fryer vs Oven Calculator

Work out the energy-cost payback period for an air fryer vs a conventional oven. Enter both prices and per-meal energy use to see when it pays back.

Air Purifier Worth It Calculator

What an air purifier costs to run for a year — amortised purchase, filter replacements, and electricity at your local rate.

Allotment vs Supermarket ROI Calculator

Calculate whether your allotment rent plus costs produces enough equivalent value to beat supermarket produce. Honest ROI including time.

Bathroom Renovation Cost Calculator

Calculate realistic bathroom renovation cost including materials, fittings, labour, plumbing, and contingency for unexpected extras.

Biweekly Auto Payment Calculator

Calculate interest savings from biweekly versus monthly auto loan payments — see how much an extra payment per year actually saves.

Boat Ownership Cost Calculator

Calculate boat ownership costs including mooring, insurance, fuel, maintenance, and depreciation to estimate annual and lifetime totals.

Boiler Replacement Savings Calculator

Calculate annual savings and payback period from replacing an old inefficient boiler, given current annual gas bill and efficiency gain.

Car Depreciation Calculator

Calculate car depreciation over time. Enter purchase price, annual rate, and years to see remaining value and total lost.

Car Insurance Calculator

Calculate total expected annual car insurance cost including premiums and an allowance for expected claims at your risk profile.

Car Loan vs Cash Calculator

Compare car loan versus cash purchase including the investment opportunity cost on the cash you'd otherwise tie up in the vehicle.

Car Rebate vs Financing Calculator

Compare cash rebate against promotional APR financing on car purchases — total cost across the loan term to find the cheaper structure.

Car Running Cost Calculator

Calculate true annual car running cost. Sum insurance, fuel, maintenance, road tax, inspection fees, and depreciation to see real cost of ownership.

Caravan vs Hotel Holiday Calculator

Compare lifetime cost of caravan ownership versus hotel-based holidays. Enter caravan cost and maintenance to see lifetime savings and caravan total.

Coffee Machine Payback Calculator

Calculate the payback period of a home espresso or coffee machine by comparing the appliance cost to what you'd otherwise spend at a café.

Dishwasher Payback Calculator

Calculate payback period for a dishwasher in time saved and water/energy savings vs handwashing. See years to break-even on purchase price.

Dishwasher Purchase Calculator

Calculate dishwasher payback including water savings and time recovered — see when the appliance pays for itself across utility bills and minutes.

Double Glazing ROI Calculator

Double glazing payback time and lifetime net benefit including any property value uplift, given window cost and heating savings.

E-Bike Purchase Calculator

Estimate the payback period of an e-bike for commuting vs a car or public transport — see how many months until the bike pays for itself.

Electric Car vs Petrol Calculator

Compare electric vs petrol car total cost. Enter prices, mileage, fuel and electricity costs to see break-even and annual savings.

Electric Scooter Payback Calculator

Calculate months until an electric scooter pays back in saved public transport or fuel costs. See net savings over scooter lifetime.

Electric Scooter vs Bus Calculator

Calculate the break-even point for buying an electric scooter instead of paying daily bus fares. Enter scooter price and bus spend to find it.

Energy Saving Upgrade ROI Calculator

Calculate ROI on home energy-saving upgrades from upfront cost and projected annual savings — payback period plus 20-year cumulative return.

EV Charging Cost Calculator

Calculate annual EV charging cost split between home and public charging. Enter miles and ev efficiency to see annual charging cost and home cost.

Exercise Bike ROI Calculator

Calculate ROI of buying an exercise bike vs gym membership. See payback period and total savings over the bike's useful life.

Extended Warranty Calculator

Calculate if an extended warranty yields net benefit. Enter warranty cost, expected repair, and probability to see expected value.

Extension vs Moving Calculator

Compare the total cost of extending a home against moving to a bigger property. Enter home value to see which option costs less and absolute saving.

Freezer vs Fresh Food Calculator

Calculate separate freezer payback from bulk buying savings net of electricity running costs, with annual saving after the break-even point.

Gaming PC vs Console Calculator

Compare gaming PC vs console annual cost including hardware and game purchase costs — see which is cheaper for the way you actually play.

Garden vs Balcony Growing Cost Calculator

What it costs to grow food at home versus buying supermarket produce — setup, seeds, time, and realistic yield in one comparison.

Heat Pump Purchase Calculator

Payback calculator for a heat pump vs gas boiler using install cost plus annual running-cost savings — see when the lower bills cover the install.

Home Gym Build Cost Calculator

Calculate home gym build cost and years to pay back vs commercial gym membership. Enter equipment cost and maintenance to see payback years vs membership.

Home Improvement ROI Estimator

Calculate return on investment for home renovation projects. Compare resale value gains across different improvement types to identify highest-ROI upgrades.

Home Insurance Calculator

Calculate total expected home insurance annual cost including premium and a claim-frequency allowance based on your home's value and excess.

Home Office Setup Cost Calculator

Calculate total home office setup cost across desk, chair, monitors, and other extras — the real upfront figure for a proper workspace.

Home Renovation Cost Calculator

Calculate total home renovation cost including materials, labour, permits, and a contingency reserve for the inevitable surprises.

Home Renovation Lifetime Cost Calculator

Calculate lifetime cost of periodic home renovations based on frequency and typical spend. Enter typical renovation cost to see lifetime total.

Home Security System ROI Calculator

Calculate home security system ROI including insurance discount and burglary risk reduction value — what the system actually returns annually.

Hot Tub Running Cost Calculator

Calculate total lifetime cost of a hot tub including purchase price and ongoing running costs — electricity, chemicals, and maintenance, all in.

Keep or Sell Car Calculator

Compare total cost of keeping versus selling vehicle. Analyze depreciation, maintenance expenses, and repair costs for ownership decision.

Kitchen Renovation Cost Calculator

Calculate realistic kitchen renovation cost including units, worktops, appliances, flooring, plumbing, and trades with contingency buffer.

Laptop Repair vs Replace Calculator

Compare repair cost to replacement cost on a broken laptop. Factor remaining useful life to see which is economically better.

Laptop vs Desktop Calculator

Compare laptop vs desktop calculator costs annually, factoring in portability value to find which setup has the lower yearly expense.

Lease Break-Even Mileage Calculator

Find the annual mileage at which leasing a car costs the same as owning it across a 3-year horizon — above and below the line are different decisions.

Lease vs Buy Calculator

Compare lease vs buy total cost with resale value. Enter lease monthly payment and buy price to see net cost of each option.

Lease vs Buy Equipment Calculator

Compare total cost of leasing equipment vs buying outright. Factor monthly lease, upfront purchase, and expected useful life over the same period.

Loft Conversion ROI Calculator

Calculate loft conversion ROI from cost, property value uplift, and optional rental income contribution over ownership period.

Mattress Replacement Cost Calculator

Calculate the true per-year and per-night cost of a mattress based on purchase price and expected lifespan. Compare premium to mid-range by real cost.

Motorcycle vs Car Cost Calculator

Compare total cost of ownership between motorcycle and car across a multi-year horizon, including fuel, insurance, and maintenance.

Motorhome vs Holiday Calculator

Compare total cost of motorhome ownership versus equivalent holidays over a multi-year period — see how many trips it takes to break even.

New Boiler Cost Calculator

Payback calculator for replacing an old gas boiler with a new higher-efficiency model — see how many years of energy savings cover the install.

New Phone Every Year Cost Calculator

Calculate the cost difference between upgrading phones annually vs holding them 3+ years. See 10-year difference including opportunity cost.

New vs Used Car Calculator

Compare 5-year total cost of a new car versus a used car, including depreciation curves and maintenance differences across the period.

Noise Cancelling Headphones ROI Calculator

Calculate your noise cancelling headphones ROI by entering cost, daily focus minutes gained, and hourly rate to find your break-even month.

Phone Upgrade True Cost Calculator

Compare contract phone upgrade total cost vs SIM-only plus a separate handset purchase — usually the bundled deal is more expensive than it looks.

Home Printer vs Print Shop Calculator

Compare cost of owning a home printer vs using a print shop. Factor printer price, ink costs, and annual print volume to find break-even point.

Car Annual Running Cost Calculator

Estimate the annual running cost of a vehicle from financing, insurance, and fuel inputs. Note: this tool does not include depreciation.

Rent vs Buy Calculator

Compare renting versus buying housing costs for any time period. Analyze total expenses, equity buildup, and financial outcomes.

Resale Value Decay Curve

Visualize vehicle depreciation curves and resale value decline over time. Identify periods of steepest value loss for specific vehicles.

Robot Vacuum Worth It Calculator

Calculate robot vacuum payback period from time saved on weekly vacuuming — how many months until the time-back covers the price.

Second Car True Cost Calculator

Calculate total 10-year cost of keeping a second household car including all expenses. Enter purchase price to see total true cost and purchase price.

Smart Meter Savings Calculator

Calculate smart meter savings from behavior-driven energy reduction over multi-year periods. Enter annual bill to see total savings and annual savings.

Smart TV Worth It Calculator

Calculate smart TV lifetime net benefit from cable cord-cutting and streaming savings against the upfront cost of the TV itself.

Smart vs Standard Appliance Calculator

Compare smart vs standard appliance purchase and ongoing costs. Factor subscription fees and realistic feature usage to see if premium pays back.

Sofa Cost per Use Calculator

Calculate cost per use of a sofa over its expected life and typical daily hours of use — small upfront price doesn't always mean cheap per sit.

Solar Panel Payback Calculator

Solar panel break-even year and lifetime return from system cost and annual energy savings — when the panels start producing free electricity.

Standing Desk ROI Calculator

Calculate standing desk ROI including productivity gains and estimated health-related savings, with months until break-even on the desk cost.

Treadmill vs Gym Membership Calculator

Compare treadmill purchase versus gym membership over a multi-year period — see how many months until owning the kit beats paying the gym.

True Cost of Car Ownership Calculator

Calculate the true all-in annual cost of running a car: depreciation, fuel, insurance, road tax, and routine servicing combined.

TV vs Projector Cost Calculator

Compare total cost of a large TV vs projector including upfront price, bulb replacements, electricity, and screen/setup costs over 5 years.

Upgrade Cycle Cost Calculator

Cost of regular upgrades versus keeping the current device or car for longer — what your upgrade habit actually costs across the years.

Van vs Car for Business Calculator

Compare van versus car for business ownership cost across years — purchase, fuel, insurance, and tax differences for each.

Washing Machine vs Laundromat Calculator

Compare lifetime cost between owning a washing machine and using laundromats. Enter washer cost and washer lifespan to see lifetime savings and annual loads.

Water Softener ROI Calculator

Calculate water softener ROI from reduced detergent use, longer appliance life, and better cleaning. See years to break-even on purchase.