Calculators
Free Calculators for Everyday Math
Calculate percentages, discounts, VAT, profit margins, marketplace fees, ROI, tips and common planning numbers. Fast browser-based calculators with clear results you can copy.
Percentage Calculator
Calculate percent of a number, percentage change and totals.
CalculatorsDiscount Calculator
Calculate sale price, discount amount and savings from a percentage off.
CalculatorsVAT Calculator
Add VAT to a net price and calculate VAT amount plus gross total.
CalculatorsReverse VAT Calculator
Remove VAT from a gross amount and find the net price and VAT amount.
CalculatorsProfit Margin Calculator
Calculate profit and profit margin from revenue and cost.
CalculatorsMarkup Calculator
Calculate markup percentage from cost and selling price.
CalculatorsBreak Even Calculator
Calculate units needed to break even from fixed costs, price and variable cost.
CalculatorsROI Calculator
Calculate return on investment from initial investment and final return.
CalculatorsPayPal Fee Calculator
Estimate PayPal fees with editable percentage and fixed fee fields.
CalculatorseBay Fee Calculator
Estimate eBay selling fees and net proceeds with editable fee rates.
CalculatorsAmazon Fee Calculator
Estimate Amazon referral fees and net proceeds with editable rates.
CalculatorsStripe Fee Calculator
Estimate Stripe payment processing fees and net amount.
CalculatorsEtsy Fee Calculator
Estimate Etsy transaction, payment processing and listing fees.
CalculatorsGross to Net Calculator
Estimate net amount after a percentage deduction from gross.
CalculatorsNet to Gross Calculator
Estimate gross amount required to reach a target net amount.
CalculatorsSales Tax Calculator
Add sales tax to a subtotal and calculate tax amount plus final total.
CalculatorsBasic Calculator
Use a clean online calculator for everyday addition, subtraction, multiplication and division.
CalculatorsTax Calculator
Add tax to a net price or remove tax from a gross purchase price.
CalculatorsTip Calculator
Calculate tip amount, total bill and split cost per person.
CalculatorsBMI Calculator
Calculate adult BMI from height and weight with WHO classification.
CalculatorsDate Calculator
Calculate days between dates or add and subtract days, weeks, months and years.
CalculatorsTime Calculator
Calculate time between two times or add and subtract minutes and hours.