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Financial Calculators

Practical finance, percentage, loan, interest, margin, discount and tax calculations.

Browse Financial Calculators

Simple Interest CalculatorCalculate non-compounding interest from principal, rate, and time.Savings CalculatorProject savings with monthly contributions and compound growth.Car Loan CalculatorEstimate a fixed car-loan payment and total interest.ROI CalculatorMeasure net return as a percentage of the initial investment.Profit Margin CalculatorCalculate profit and profit margin from cost and revenue.Markup CalculatorCalculate markup and profit from cost and selling price.Tip CalculatorSplit a bill, tip, and per-person total.Commission CalculatorCalculate commission and total pay from sales and base pay.Percentage CalculatorCalculate a percentage of any number with an instant step-by-step result.Percentage Increase CalculatorIncrease any number by a percentage and see the added amount and final value.Percentage Decrease CalculatorDecrease any number by a percentage and see the reduction and final value.Percentage Difference CalculatorFind the symmetric percentage difference between two values using their average.Percentage Change CalculatorMeasure the percentage increase or decrease from an original value to a new value.Mortgage CalculatorEstimate monthly mortgage payments, total repayment, and interest from amount, rate, and term.Loan CalculatorCalculate fixed monthly loan payments, total repayment, and total interest.Compound Interest CalculatorProject investment growth and interest earned at a selected compounding frequency.Basic CalculatorPerform everyday arithmetic, percentages, roots, reciprocal, and memory calculations locally.Scientific CalculatorCalculate trigonometric, logarithmic, root, and exponent operations locally.Discount CalculatorFind the saving and final price after a percentage discount.VAT CalculatorAdd VAT to a net amount or extract it from a gross amount.

Start here: practical tutorial

Use a financial calculation as a transparent estimate

Gather principal, rate, term, fees and comparison values from one dated source. Avoid mixing monthly and annual rates, then run a second scenario for uncertainty.

  1. Choose the tool matching the input you have and the result you need.
  2. Confirm every unit, option and assumption before running it.
  3. Review the example, limitations and output before using the result.

Worked example

Recalculate a mortgage at a higher rate and with an extra payment to see how the schedule changes.

What this does not replace

Outputs are not lending offers, tax advice, investment advice or affordability decisions.

Estimate a mortgage payment