The everyday toolkit
Calculators.
A little more clarity.
Make everyday numbers a little easier. Find a calculator, get a clear answer, and get on with your work.
Ready when you are
No account neededDate Calculator
Count days between dates, add or subtract time, and plan repeating schedules.
Open calculatorPercentage Calculator
Find a percentage of a number, a percentage share, or a percentage change.
Open calculatorDiscount Calculator
Calculate your savings and the final price after a percentage discount.
Open calculatorVAT / Tax Calculator
Add tax to a net amount or extract included tax using your chosen rate.
Open calculatorLoan Payment Calculator
Estimate monthly payments, total repayments and interest for a fixed-rate loan.
Open calculatorInterest Calculator
Compare simple and compound interest with annual, quarterly, monthly or daily compounding.
Open calculatorProfit Margin Calculator
Find profit, margin and markup, or set a selling price from a target margin.
Open calculatorChoose a tool for dates, shopping, tax, borrowing, savings or pricing. Every calculator works in your browser and explains how its answer is calculated.
Choose by the question you need to answer
Shopping and pricing
Percentage answers ‘15% of 200’; Discount subtracts that saving from a price. VAT adds your supplied rate to net or extracts it from gross. Profit Margin compares profit with selling price and also shows markup against cost.
Dates, borrowing and savings
Date Calculator counts calendar days or shifts a date by an interval. Loan estimates equal monthly payments at a fixed rate. Interest compares simple or compound growth for one starting amount, with no extra deposits.
For example, reducing 100 by 20% gives 80, while extracting a hypothetical 20% included tax from gross 100 gives net 83.33. Both involve percentages, but the base and operation differ. Read each tool’s mode labels before entering values.