Toolnoza

Finance & Business

Calculate discounts, margins and tax amounts using rates you enter. Review assumptions before applying a result to a purchase or quotation.

Student Loan CalculatorEstimate a fixed monthly student-loan payment, total repayment and interest.Debt Payoff CalculatorEstimate payoff months, total interest and a monthly repayment schedule.Break Even CalculatorCalculate break-even units and revenue from fixed costs, unit price and variable cost.Reverse Sales Tax CalculatorFind the pre-tax amount and included tax from a total and tax rate.Rent Increase CalculatorCalculate the percentage change between current and new rent.Markup to Margin CalculatorConvert a markup percentage on cost into profit margin on selling price.Salary to Hourly CalculatorConvert an annual salary into an hourly equivalent using weekly hours and paid weeks.Average Down CalculatorCalculate the weighted average purchase price after an additional purchase, including fees.Rent vs Buy CalculatorCompare renting and buying a home over time, including mortgage, fees, upkeep and investing the savings.Electric Bill Calculator — kWh & CostEstimate an electric bill from kWh and your price per kWh, or convert appliance watts and operating time to energy and cost.Discount CalculatorCalculate the final price and savings after a percentage discount.VAT Calculator — Add or Remove TaxAdd VAT to a net price or remove VAT from a gross price using your chosen rate.Profit Margin & Markup CalculatorCalculate profit, gross margin and markup from cost and selling price.

Practical guides: Finance & Business

Transformer kVA Calculation: Single-Phase & Three-Phase FormulaConvert volts and amps to transformer kVA for single-phase and three-phase circuits, or calculate amps from kVA. Includes formulas and examples.Print on Demand Profit Margin: POD Pricing Formula & CalculatorCalculate print-on-demand profit, margin, ROI and break-even price. Learn how base cost, shipping, marketplace fees and ads affect POD profit.Etsy Fees Calculator 2026: Listing, Transaction, Payment & Ads FeesUnderstand Etsy seller fees in 2026 and estimate listing, 6.5% transaction, country-specific payment processing, Offsite Ads and conversion fees.Salary to Hourly Calculator: Convert Annual Pay to an Hourly RateConvert an annual salary to an hourly equivalent using paid weeks and weekly hours, with examples and clear gross-pay limits.Average Down Calculator: Find Your New Average Cost per ShareCalculate a weighted average purchase price after adding units at a new price, including new fees, and see what the result does not mean.Reverse Sales Tax Calculator: Find the Pre-Tax Price from a TotalRemove a single included sales-tax rate from a tax-inclusive total and calculate the net price and tax amount with examples.Markup to Margin Calculator: Convert Markup % to Profit MarginConvert a markup on cost into margin on selling price, understand the different denominators and compare a clear example.How to Calculate Keyword ROI for SEO and PPCModel clicks, conversions and profit from keyword assumptions. Compare ROI with ROAS and calculate a break-even CPC.