Free Business Calculators

Choose from curated business calculators for finance, invoices, freight, tax, time, deadlines and cross-border workflows. Each core tool includes a formula or method note, worked example, business-use guidance and responsible-use limits.

Featured business calculators

The most-used tools across all categories.

Business Days CalculatorCount working days between any two dates, 40+ countriesInvoice Due Date CalculatorPayment due date from invoice date and Net termsVAT CalculatorAdd or remove VAT at any rate — custom, 20%, 5%, zeroCBM CalculatorCubic metres for sea freight LCL quotes and container planningHS Code Duty CalculatorEstimate import duty and taxes from HS code and rateLanded Cost CalculatorFull import cost: supplier, freight, duty, and destination chargesROI CalculatorReturn on investment from net profit and total investmentBusiness Loan CalculatorMonthly repayments and total interest from loan amount and rateAir Freight Chargeable WeightIATA ÷6000 and courier ÷5000 chargeable weightContainer Loading CalculatorCarton count for 20ft, 40ft, and HC containersReal Due Date CalculatorInvoice due date adjusted for weekends and public holidaysTime Card CalculatorWeekly hours and totals from daily clock-in/clock-out times

Browse by category

All calculators are organised into 7 business-focused categories.

Finance Calculators

All

Investment appraisal, profitability, loan modelling, and pricing tools.

ROI CalculatorBreak-Even CalculatorBusiness Loan CalculatorNPV CalculatorIRR CalculatorPayback Period CalculatorWorking Capital CalculatorMargin CalculatorAmortization CalculatorPayment CalculatorAPR CalculatorSimple Interest CalculatorPresent Value CalculatorFuture Value CalculatorSavings Goal CalculatorDepreciation CalculatorEquipment Lease CalculatorSME Budget CalculatorDebt Payoff CalculatorCurrency Conversion CalculatorInflation CalculatorAverage Return CalculatorBond CalculatorDebt Consolidation CalculatorLoan Comparison CalculatorBusiness Loan Payment Calculator

Invoice & Payment Calculators

All

Invoice due dates, late fees, markup, and payment term calculations.

Invoice Due Date CalculatorReal Due Date CalculatorInvoice Late Fee CalculatorMarkup CalculatorDiscount CalculatorCommission Calculator

Freight & Logistics Calculators

All

CBM, chargeable weight, container and pallet loading, landed cost, and cargo insurance.

CBM CalculatorFreight Chargeable WeightAir Freight Chargeable WeightContainer Loading CalculatorPallet CalculatorLanded Cost CalculatorCargo Insurance CalculatorShipping Cost Calculator

Tax / VAT / GST Calculators

All

Add or remove VAT, GST, and sales tax. Country-specific calculators for 20+ jurisdictions.

VAT Calculator (any rate)UK VAT CalculatorGermany VAT / MwStFrance VAT / TVAUAE VAT CalculatorAustralia GST CalculatorSingapore GST CalculatorUS Sales Tax Calculator

Deadlines & Working Days

All

Business day counting, SLA deadlines, shipping deadlines, and working day tools for 40+ countries.

Business Days CalculatorAdd Business Days CalculatorSLA Deadline CalculatorShipping Deadline CalculatorUK Working Days CalculatorUS Working Days CalculatorGermany Working DaysAustralia Working Days

Business Math Calculators

All

Percentage, ratio, rounding, and everyday number tools for business decisions.

Percentage CalculatorPercent Change CalculatorRatio CalculatorRounding Calculator

Business Statistics Calculators

All

Descriptive stats, variability, sampling, and probability tools for analytics and reporting.

Mean, Median & ModeStandard DeviationSample Size CalculatorConfidence IntervalProbability CalculatorZ-Score Calculator

Time & Work Calculators

All

Work hours, time cards, date arithmetic, time zones, and duration tools for payroll and scheduling.

Work Hours CalculatorTime Card CalculatorDecimal Hours CalculatorDate CalculatorDay CounterDay of Week CalculatorTime Duration CalculatorTime Zone Meeting PlannerAge & Tenure Calculator

China & Cross-Border Calculators

All

Import duty, landed cost, customs value, Incoterms, and HS code calculations.

Import Duty CalculatorHS Code Duty CalculatorLanded Cost CalculatorDuties & Taxes EstimateFOB vs CIF CalculatorIncoterms Cost SplitCustoms Value CalculatorChina Business Calculators

Fleet & Transport Calculators

All

Fuel costs, mileage tracking, fleet TCO, and vehicle expense tools for logistics teams.

Fuel Cost CalculatorGas Mileage CalculatorMileage ReimbursementFleet Cost Per Mile

Operations & Measurement

All

Area, volume, weight, density, and construction tools for facilities and procurement.

Square Footage CalculatorArea CalculatorVolume CalculatorConcrete CalculatorDensity CalculatorWeight CalculatorMass CalculatorSpeed CalculatorUnit Conversion CalculatorTemperature ConversionLength ConversionVolume Conversion

Facilities & Construction

All

Material estimation tools for roofing, tiling, flooring, painting, gravel and mulch.

Roofing CalculatorTile CalculatorGravel CalculatorMulch CalculatorPaint CalculatorFlooring Calculator

Property & Facilities

All

Rent analysis, property yields, cap rates, and lease cost tools for real estate decisions.

Rent vs Buy CalculatorRental Property CalculatorCommercial Rent CalculatorCap Rate CalculatorProperty Yield Calculator

Energy & Utilities

All

Electricity costs, energy consumption, and solar payback for facility operations.

Electricity Cost CalculatorEnergy Consumption CalculatorSolar Payback Calculator

Business IT Tools

All

Bandwidth, password, network, encoding, hashing, and UUID tools for IT operations and admin teams.

Bandwidth CalculatorPassword GeneratorIP Subnet CalculatorURL Encode/DecodeBase64 Encode/DecodeHash GeneratorUUID Generator

E-commerce & Marketplace

All

Profit, fees, ROAS, and seller tools for Amazon, Shopify, TikTok Shop, Shopee, and Lazada.

E-commerce Profit CalculatorMarketplace Fee CalculatorAmazon Fee CalculatorTikTok Shop Fee CalculatorShopee Fee CalculatorLazada Fee CalculatorShopify Profit CalculatorBreakeven Ad ROAS CalculatorROAS CalculatorCustomer Acquisition CostAverage Order Value CalculatorConversion Rate Calculator

Inventory & Operations

All

Turnover, reorder points, safety stock, EOQ, and warehouse cost tools for supply chain teams.

Inventory Turnover CalculatorReorder Point CalculatorSafety Stock CalculatorEconomic Order QuantityStockout Cost CalculatorHolding Cost CalculatorWarehouse Storage CostPick & Pack Cost Calculator

Which calculator should I use?

Find the right starting point by task.

Counting working days?

Business Days Calculator

Sending an invoice?

Invoice Due Date Calculator

Quoting freight?

CBM Calculator

Importing goods?

Landed Cost Calculator

Checking VAT or GST?

VAT Calculator

Tracking work hours?

Work Hours Calculator

Evaluating an investment?

ROI Calculator

Country-specific calculators

VAT, GST, and working days tools calibrated per country.

United KingdomEurope (All)United StatesAustraliaSingaporeUAECanadaGermanyFranceSaudi ArabiaMiddle EastChina & Asia

Related workflows

Multi-step sequences that combine calculators for common business tasks.

Invoice-to-cash

Invoice Due Date, Real Due Date, Late Fee, Business Days

Freight quoting

CBM, Pallet, Container Loading, Chargeable Weight, Shipping Cost

Cross-border landed cost

HS Code Duty, Import Duty, Landed Cost, FOB vs CIF, Insurance

Deadline planning

Business Days, Add Days, SLA Deadline, Shipping Deadline

Finance planning

ROI, Break-Even, Working Capital, NPV, Margin

Pricing & margin

Margin, Markup, Discount, VAT, Commission

How UtilityPilot calculators are built

Built carefully for practical business use

Formulas or calculation methods shown on each page

Worked examples with real-world inputs and expected outputs

No sign-up required — no account or email needed

Browser-based — values are not stored or transmitted

These calculators are planning and estimation tools. For tax filings, customs declarations, legal deadlines, or financial decisions, verify results with a qualified professional.

Methodology & formulasAbout UtilityPilot