All calculators

Every free calculator on CalcReckon, grouped by category. Type to filter the list.

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Home improvement costs View category

Architect feesArchitect fees as % of build cost, fixed fees and stages.
Bifold door costuPVC, aluminium or timber bifolds, fitted, plus new openings.
Blinds costPrice made-to-measure blinds or shutters, supplied and fitted.
Carpet costCarpet, underlay, fitting and stairs priced per room.
Driveway costCompare gravel, tarmac, block paving, resin and concrete.
Epoxy flooring costGarage and home epoxy floors priced per m².
Fencing costPanel, closeboard, composite or metal fencing priced per metre.
Garage build costConcrete, timber, block or brick garages, single or double.
Garage conversion costTurn a garage into a bedroom, office or annexe: what it costs.
Groundworks costPrice excavation, foundations, slab, muck away and drainage.
House build costCost to build a new house per m² in the UK.
House extension costSingle or double storey extension cost per m², with fees.
Loft insulation costCost, depth and yearly savings for 270 mm loft insulation.
Moving house costStamp duty, solicitor, survey, agent and removals in one total.
Orangery costuPVC, aluminium or hardwood orangery priced per m².
Patio costPorcelain, sandstone or slab patios priced per m².
Rebuild cost (insurance)Estimate your home's rebuild value for buildings insurance.
Retaining wall costCost of a garden retaining wall by material, length and height.
Roof cleaning costMoss removal, soft wash and biocide by house type.
Stair carpet costCarpet for stairs and landing, supplied and fitted.
Standing seam roof costPrice a standing seam metal roof in steel, aluminium, zinc or copper.
Stud wall costCost to build a stud partition wall, with door and plastering.
Swimming pool costAbove-ground, liner, concrete and indoor pool costs.
Tarmac driveway costPrice a new tarmac drive per m² with tonnage estimate.
Tree removal costFelling, stump grinding and waste removal by tree size.
Window cleaning costWhat a window cleaner charges by house size and frequency.
Window replacement costPrice new uPVC, aluminium or timber windows for your home.

Building & DIY View category

Block calculatorConcrete blocks, mortar, sand and cement for a wall.
Brick calculatorBricks, mortar, sand and cement bags for a wall.
Decking calculatorDeck boards, joists, screws and cost for your deck size.
Downlight spacingHow many downlights a room needs and how far apart.
Grout calculatorHow much grout you need in kg for your tiles and joints.
Pond volume calculatorLitres and gallons in your pond, plus liner and pump size.
Roof area calculatorRoof area from footprint and pitch, plus tiles needed.
Roof pitch calculatorFind the pitch of a roof in degrees, ratio and per cent.
Spindle spacingSpindle count and gaps that pass the 100 mm sphere rule.
Square metre calculatorWork out area in m² from metres, cm, feet or inches.
Stair calculatorRisers, goings, pitch and Part K checks for a staircase.
Steel beam calculatorIndicative UB size, weight and cost for a domestic steel beam.
Tile calculatorHow many tiles, boxes, adhesive and grout you need.
Topsoil calculatorHow much topsoil you need in m³, tonnes and bulk bags.
TV mount heightBest height and viewing distance for a wall-mounted TV.
U-value calculatorU-value of a wall, roof or floor build-up vs Part L.

Money, loans & savings View category

APR calculatorWork out the true APR of a loan including fees.
Bad credit loanMonthly repayments and total cost of a high-APR loan.
Boat financeMonthly repayments and total interest on a boat or marine loan.
Budget calculatorMonthly budget: income vs spending, 50/30/20 split and leftover.
Compound interestHow savings grow with interest on interest and monthly deposits.
CPI calculatorAdjust a price between any two months using the official ONS CPI.
Credit card repaymentTime and interest to clear a card: minimum vs fixed payments.
Fund growthHow a fund or unit trust grows after charges, in or out of an ISA.
Historical investmentWhat money invested in the FTSE in a past year is worth now.
Inflation calculatorWhat money from any year since 1900 is worth today.
Interest rate calculatorFind the interest rate from start and end amounts, AER and APR.
Investment calculatorGrow a lump sum and monthly investments after fees, tax and inflation.
ISA calculatorStocks and shares ISA growth compared with a cash ISA.
Life insuranceIndicative term and over-50s life cover premiums, and cover needed.
Personal loanMonthly repayment, total interest and a repayment table for a loan.
Savings bondInterest, tax and maturity value of a fixed-rate savings bond.
Savings calculatorHow long to reach a savings goal, or how much to save a month.
Scrap gold valueWhat 9ct to 24ct gold is worth by weight at today’s price.
Scrap silver valueWhat sterling, Britannia or fine silver is worth by weight.
Share valueValue of a shareholding, profit or loss, dividends and stamp duty.
Zakat calculatorZakat at 2.5% on wealth above the gold or silver nisab.

Tax View category

Capital gains taxWork out CGT on shares, property or a business sale.
CGT on inherited propertyCapital gains tax when you sell a house you inherited.
Company car taxBenefit in kind tax on a company car, electric or petrol.
Corporation taxCorporation tax with marginal relief and associated companies.
Crypto taxCapital gains tax on crypto sales and income tax on staking.
Dividend taxDividend tax for 2026/27 with the £500 allowance and your salary.
Dividend vs salaryCompare taking company profit as salary or as dividends.
Gift Aid tax reliefGift Aid the charity gets and the tax relief you can claim.
Import taxImport VAT, customs duty and handling fees on parcels from abroad.
Inheritance from abroadUK tax when you inherit money or property from overseas.
Inheritance taxEstimate inheritance tax on an estate with 2026/27 allowances.
Limited company taxDirector take-home after corporation tax, salary and dividends.
Medical insurance taxTax you pay on private medical insurance from your employer.
Rental income taxIncome tax on rental profits, with the section 24 credit.
Self-employed taxIncome tax and Class 4 NI on your profits, plus payments on account.
Tax code checkerWhat your tax code means and how much tax it takes.
Tax refund leaving UKEstimate the tax refund when you leave the UK part-way through a year.

Salary & work View category

Bonus taxTax and NI on a bonus in 2026/27, including the 60% trap.
Bradford FactorBradford Factor score from absence spells and days off.
Contractor take-homeContractor take-home: umbrella inside IR35 vs limited company.
EV salary sacrificeMonthly cost of an electric car through salary sacrifice.
Holiday entitlementStatutory holiday entitlement, irregular hours and leavers.
Hourly wageConvert hourly, daily, weekly, monthly and annual pay.
Net to grossThe gross salary you need for a target take-home pay.
NHS back payNHS Agenda for Change 2026/27 pay award and back pay by band.
Notice periodYour statutory and contractual notice and your last working day.
Overtime payOvertime pay at time and a half or double time, gross and net.
Part-time salaryPro-rata salary, take-home pay and holiday for part-time hours.
Pay rise calculatorNew salary and take-home after a pay rise, in real terms.
Redundancy payStatutory redundancy pay by age, service and weekly pay.
Redundancy taxTax and NI on a redundancy package, with the £30,000 exemption.
Salary percentileWhere your salary ranks among UK full-time employees.
Salary sacrificeTax and NI you save by sacrificing salary into your pension.
Settlement agreementValue and tax of a settlement agreement package.
SSP calculatorStatutory Sick Pay from day one under the April 2026 rules.
Take-home payYour net pay after tax, NI, pension and student loan.
Umbrella take-homeUmbrella company take-home pay from your day rate.

Pensions & retirement View category

Annuity calculatorEstimate lifetime annuity income from your pension pot.
Care fees annuityRough cost of an annuity to cover a care fee shortfall.
Early retirementPot needed to retire early and bridge to state pension age.
Fixed-term annuityIncome for a set term plus a guaranteed maturity value.
How much to retirePension pot you need for your target retirement income.
Inherited state pensionWhat you may inherit from a late spouse’s state pension.
NHS pensionProject your NHS 2015 scheme pension and contribution tier.
Pension contributionsTax relief and real cost of your pension contributions.
Pension drawdownHow long your drawdown pot lasts and the income it can pay.
Pension potProjected pension pot at retirement in today’s money.
Pension sharing on divorcePension sharing percentage to equalise values or income.
Pension taxTax on pension withdrawals, lump sums and emergency tax.
Police pensionEstimate your police pension from the 2015, 1987 and 2006 schemes.
Retire on £1 millionHow long £1 million lasts and the income it can pay.
State pensionYour new state pension amount and state pension age.
State pension top-upCost of voluntary NI and how much extra state pension you get.

Property & mortgages View category

Airbnb calculatorShort-let income, fees, cleaning, costs and profit.
Bridging loanBridging loan interest, fees and total cost, retained or rolled.
Buildings insurance costIndicative buildings insurance premium from your rebuild cost.
Buy-to-let mortgageHow much you can borrow on a buy-to-let from the rent (ICR test).
Equity releaseLifetime mortgage: how much you could release and what it grows to.
Help to Buy equity loanWhat your Help to Buy equity loan costs and what you owe.
Holiday let profitHoliday let income, costs and profit after the FHL changes.
Home equity loanHow much equity you can borrow and the monthly repayments.
Home insuranceIndicative buildings and contents insurance premium.
House price changeHow much a home’s value may have changed since you bought.
How much can I borrowBorrowing by income multiple, stress test and deposit.
Interest-only mortgageInterest-only vs repayment costs and what you still owe.
Letting agent feesLetting agent fees with VAT, and the rent you keep each year.
LTV calculatorLoan to value, your LTV band and the deposit for a target LTV.
Mortgage calculatorMonthly repayments, total interest and how the term changes them.
Mortgage overpaymentInterest and years saved by overpaying your mortgage.
Rent increaseNew rent after a % or CPI rise, and the earliest legal start date.
Rental yieldGross and net rental yield, cash flow and landlord tax.
Second mortgageSecond charge loan repayments and your combined LTV.
Shared ownershipMonthly mortgage, rent and service charge, plus staircasing cost.

Benefits & legal View category

Child maintenanceChild Maintenance Service amount from income, children and nights.
Criminal injuries compensationEstimate a CICA award from tariff levels and lost earnings.
Injury compensationCompensation ranges for common injuries plus your losses.
PIP pointsPIP daily living and mobility points and your weekly award.
Probate feesCourt fee, grant copies and solicitor costs for probate.
Spousal maintenanceRough spousal maintenance using the one-third rule and needs.
UK poverty lineIs your household income below the UK poverty line?
UK visa feesTotal UK visa cost: application fee plus health surcharge.
Universal CreditEstimate your monthly Universal Credit for 2026/27.

Health & fitness View category

ACB calculatorTotal anticholinergic burden score for a list of medicines.
Alcohol unitsUnits in your drinks and your weekly total vs the 14-unit guideline.
BMI calculatorAdult BMI with NHS categories and your healthy weight range.
BMR calculatorBasal metabolic rate and daily calories by activity level.
Body fat calculatorBody fat % from tape measurements or BMI, with healthy ranges.
Calorie deficitDaily calories for safe weight loss and time to reach your goal.
Cholesterol ratioTotal/HDL ratio, non-HDL and NHS healthy levels from your test.
Corrected calciumAdjust a total calcium result for a low or high albumin level.
eGFR calculatoreGFR from creatinine (CKD-EPI) and the CKD stage G1 to G5.
Height percentileChild height centile on UK growth charts, adult height percentile.
Ideal weightHealthy weight range for your height, plus classic formulas.
Macro calculatorDaily protein, carb and fat grams from your calorie target.
Protein calculatorHow much protein you need a day for your weight and goal.
QRISK3 heart risk10-year heart attack and stroke risk using the QRISK3 equations.
Sleep calculatorBest bedtime or wake-up time using 90-minute sleep cycles.
TDEE calculatorTotal daily energy expenditure and calories to lose or gain.

Pregnancy, baby & family View category

Baby weight percentileYour baby’s weight centile on the UK-WHO growth charts.
Child BMI percentileChild BMI centile (UK90) and healthy weight category, age 2 – 18.
Maternity payStatutory Maternity Pay for all 39 weeks, 2026/27 rates.
Rent to pay parentsA fair amount of board for an adult child living at home.
School year calculatorWhich school year your child is in and when they start secondary.
When to tell workKey maternity dates at work from your due date.

Motoring & travel View category

Alcohol units and timeUnits drunk and roughly how long the body takes to process them.
Avios value calculatorPence per Avios for a reward flight, and what your spending earns.
Car delivery costCar transport price by distance, transporter type and car size.
Car depreciationWhat your car could be worth in future and how much value it loses.
Car financeHP and PCP monthly payments, balloon and total cost compared.
Car finance settlementSettlement figure, interest saved and voluntary termination on HP or PCP.
Car insurance estimateIndicative yearly and monthly car insurance from UK averages.
Car recovery costPrice range for a tow or breakdown recovery by distance and time.
Car running costsYearly and per-mile cost of running your car.
Car service costInterim, full or major service price by car and garage type.
Car tax calculatorVehicle excise duty for 2026/27 by registration date, CO₂ and fuel.
Distance calculatorMiles and km between UK towns and cities, with an estimated drive time.
EV charging costCost to charge an EV at home, public and rapid chargers.
Excess mileageProject your PCP or lease excess mileage charge.
Flight delay compensationUK261 compensation for a delayed flight: £220, £350 or £520.
Fuel cost calculatorWhat a journey costs in petrol or diesel, and the cost per passenger.
Motorhome financeMonthly payments on a motorhome or campervan loan.
MPG calculatorYour real MPG, litres per 100 km and cost per mile from a fill-up.
Private jet charterIndicative private jet charter cost by aircraft size and flight time.
Scrap van priceWhat your van is worth as scrap from its weight and the price per tonne.
Tyre pressureConvert tyre pressures between PSI, bar and kPa.
Van financeMonthly van HP or lease cost, with balloon and VAT reclaim.
Write-off valueEstimate your total loss payout, with excess and salvage retention.

Energy & bills View category

BTU calculatorRoom heating BTU, air-con size and BTU to kW conversion.
Carbon footprintHousehold CO2e from energy, driving and flights (2026 factors).
Energy bill calculatorYearly and monthly gas and electricity bill from your usage.
Heat pump costNet heat pump cost after the £7,500 grant, and running costs.
Heat pump running costHeat pump kWh and running cost vs your gas boiler.
kWh cost calculatorRunning cost of any appliance from watts, hours and unit price.
Light bulb running costCompare the running cost of LED, halogen and old bulbs.
Off-grid solarSize panels, battery and inverter for an off-grid system.
Radiator BTURoom heat loss in BTU and watts, and the radiator size you need.
Solar panel costSolar PV cost, generation, savings, export income and payback.
Water meter calculatorWould a water meter save you money? Compare with your bill.
Water usage calculatorLitres a day your home uses, by activity, and the metered cost.

Business & selling online View category

3D printing costCost and selling price of a 3D print, including power and wear.
Amazon FBA profitProfit and margin per unit after Amazon UK FBA fees and VAT.
Auction feesBuyer's premium, VAT and seller's commission at UK auctions.
Book printing costCost per copy for print on demand vs a short print run.
Business loanRepayments and total cost of a secured or unsecured business loan.
Depreciation calculatorStraight-line and reducing balance depreciation, year by year.
Markup calculatorSelling price from cost and markup, with margin and VAT.
Postage calculatorRoyal Mail price by size, weight and service, stamps vs online.

Food & cooking View category

Air fryer calculatorConvert oven temperatures and times to air fryer settings.
Buttercream calculatorHow much buttercream to fill and cover your cake.
Cake calculatorScale a cake recipe to a different tin size or shape.
Turkey cooking timeRoasting time by weight, resting time and when to put it in.

Pets & animals View category

Dog chocolate toxicityTheobromine dose from chocolate type, amount and your dog’s weight.
Dog foodDaily grams of dry, wet or raw food for your dog.
Fish tank stockingHow many fish your aquarium can hold, by litres and surface.
Lambing calculatorExpected lambing dates from the date the tups went in.

Maths & dates View category

Age calculatorExact age in years, months and days, and days to your next birthday.
Area calculatorArea of rectangles, triangles, circles and other shapes.
Volume calculatorVolume of a cube, cuboid, cylinder, cone, sphere or pyramid.

Lifestyle View category

Arbitrage calculatorStakes for a two- or three-way arb and the guaranteed profit.
Bet calculatorReturns for singles, doubles, trebles, accas and each-way bets.
Birth chart calculatorYour Sun, Moon and rising sign from birth date, time and UK town.
Bra size calculatorYour UK bra size from underbust and bust measurements.
Course handicapYour WHS course handicap and playing handicap for any tee.
Dress size calculatorUK dress size from your bust, waist and hip measurements.
Odds calculatorConvert fractional, decimal and American odds and see your returns.
Tattoo costPrice range for a tattoo by size, detail, colour and artist rate.