BlocksWork out how many blocks a wall needs, allowing…All calculators
117 calculators. Choose a category or browse the A–Z list.
Construction
BlocksWork out how many blocks a wall needs, allowing…
BricksWork out how many bricks you need, allowing for waste…
Foundation blocksWork out foundation blocks, the number of courses…
ConcreteWork out cubic metres of concrete for a strip footing…
PaintWork out litres of paint for walls or a ceiling, by…
TilesWork out the number of tiles, packs and the approximate…
FlooringWork out packs of flooring, the waste allowance…
3D plannerDraw the room shape (walls, recesses, doors)…
PlasterWork out the kilograms of plaster or skim coat…
3D paintingDraw the actual room outline, add doors and windows…
GroutEstimate grout weight from tile size, joint width…
ScreedCalculate screed weight and 25 kg bags from floor area…
InsulationEstimate insulation packs, adhesive bags and fixings…
Roof tilesEstimate roof slope area, tiles, ridge tiles and waste…
PavingCalculate paving pallets, bedding aggregate and edging…
FenceEstimate fence posts, panels and concrete footings from…
StairsCalculate riser count and height, stair run and the 2r+t…
WallpaperCalculate wallpaper rolls from room perimeter, wall…
Bulk materialConvert area and layer depth into volume, tonnes and…
Deck boardsCalculate board rows, full boards and running metres…
Roof pitchConvert rise and horizontal run into angle, slope…Accounting
VATCalculate net, gross and basket VAT.
Gross to netCalculate Polish monthly or annual net pay.
Margin and markupCalculate margin, markup and selling prices.
Mandate contractEstimate Polish mandate-contract net pay.
Work contractEstimate Polish work-contract net pay.
Statutory interestCalculate Polish civil interest and partial payments.
Domestic allowanceCalculate Polish travel allowances and lodging.
DepreciationCalculate depreciation and Polish tax costs.
Health contributionCalculate Polish business health contributions.
Tax arrears interestCalculate Polish tax interest and partial payments.
Commercial interestCalculate Polish trade interest and compensation.
Minimum wageCompare Polish pay with the part-time minimum.
Sick payEstimate Polish sick pay from the base and days.
Leave compensationEstimate Polish compensation for unused leave.
Inheritance and gift taxEstimate Polish gift tax with prior acquisitions.
Notarial feeEstimate Polish notary fees and deed costs.
Own-employer mandateEstimate extra contract pay for your Polish employee.Business
Hourly ratePrice an hour of work after costs.
Employer costCalculate Polish monthly or annual employment costs.
B2B vs employmentCompare annual net pay from Polish employment and B2B.
Business profitCalculate profit, loss or revenue for a target.
Working timeCalculate Polish working hours and holidays.
Annual leaveCalculate Polish leave from service and working time.
PPK contributionsCalculate Polish PPK payments and subsidies.
Small ZUS PlusCheck Polish Small ZUS Plus eligibility and payments.
Lump-sum taxCalculate Polish revenue tax with deductions.
Tax-form comparisonCompare Polish progressive, flat and revenue taxes.
Management contractEstimate Polish management-contract net pay.
Night allowanceCalculate Polish night-work allowance.
VAT exemption thresholdTrack sales and the Polish VAT exemption threshold.
PESEL / NIP / REGONCheck PESEL, NIP and REGON without saving IDs.
Notice periodCalculate Polish contract end dates using service length.
Parental leavePlan Polish parental leave and benefit options.
Break-evenCalculate break-even sales and profit targets.Finance
Loan paymentCalculate loan payments, interest and schedule.
Loan overpaymentCompare loan payments after overpayments.
PercentagesCalculate percentages, changes or original values.
Compound interestCalculate capital growth with deposits and tax.
Savings interestCalculate deposit income after tax.
Rental yieldCalculate rental income after costs and optional tax.
LeaseEstimate lease payments, buyout and costs.
InflationCompare nominal value and purchasing power.
Borrowing capacityEstimate a loan with living costs and a buffer.
Rent vs buyCompare wealth and costs when renting or buying.
APR (RRSO)Estimate APR or the rate of dated cash flows.
Rate changeCompare payments and interest after a rate change.
Home purchase costAdd property price, taxes, fees and a reserve.
IKE and IKZECheck Polish IKE/IKZE limits and tax relief.
Bill splitSplit a bill and tip equally or by shares.
DiscountCalculate successive discounts and delivery costs.
ROICalculate ROI or XIRR from dated cash flows.
CAGRCalculate annual compound growth.
Emergency fundSet a reserve from your expenses and track progress.
DTI ratioCalculate debt payments as a share of income.Home and garden
Electricity costAppliance energy use and running cost.
Heating costYearly cost of two heating options.
Solar PVSolar PV size, output and payback.
RainwaterRoof rainwater yield and tank size.
Heat lossHeat loss from U-value, area and temperatures.
Radiator outputRadiator output from room demand and correction.
HRV airflowVentilation airflow from volume and occupants.
G11 vs G12Compare G11 and G12 tariffs with your own rates.
Recipe servingsScale ingredients and servings.
Mix ratioTwo ingredients in an A:B ratio.Converters
m², ares, hectaresConvert square metres, ares and hectares both ways.
Days between datesDays, weeks and months between two dates.
Weighted averageWeighted average and the grade you still need.
AgeExact age, days lived and weekday of birth.
LengthMetric and imperial length units.
MassGrams, kilograms, pounds, ounces and tonnes.
TemperatureCelsius, Fahrenheit and kelvin.
VolumeLitres, m³ and kitchen measures.
Speedkm/h, m/s, mph and knots.
CircleCircle area, circumference and diameter.
TriangleTriangle area and perimeter.
CylinderCylinder volume and surface area.
TankTank capacity in litres and m³.
Map scaleDistance from a map scale denominator.
Distance and timeAverage speed and pace.Automotive
Trip costFuel use and trip cost per person.
Mileage allowancePolish mileage allowance at official per-km rates.
Tyre replacementTyre size swap, diameter and speedometer error.
Car excise (PL)Polish excise on cars from the EU or abroad.
Car running costWhat a car really costs per month.
Car depreciationHow much value a car loses each year.Health and activity
Technology
3D printing costEstimate material, electricity, labour and failed-print…
IPv4 subnetDerive network address, broadcast, mask and host count…
Print DPI/PPIConvert image pixels and an explicit DPI value into…
Aspect ratioResize an image by width or height without changing its…
UPS runtimeEstimate backup time from battery Wh, load, conversion…
RAID capacityCompare usable capacity, overhead and basic fault…
Backup storageEstimate storage for full backups, daily increments,…