Calculators that just work.
Fast, accurate tools for freelancers, your money, and home projects — answers as you type, on any device.
Browse calculators ↓Personal Finance
Compound Interest Calculator
See how much your savings or investment grows over time with compound interest and regular monthly contributions.
Open calculator →Loan Repayment Calculator
Work out your monthly repayment on a loan or mortgage from the amount, interest rate, and term.
Open calculator →Savings Goal Calculator
Find out how much to save each month to reach a savings target by a set date.
Open calculator →Home & DIY
Flooring Cost Calculator
Estimate the total cost of flooring a room from its area and the price per square metre.
Open calculator →Is a Heat Pump Worth It in 2026? Grant & Payback Calculator
See if a heat pump is worth it in 2026 with the current UK Boiler Upgrade Scheme grant (£7,500) or the US $2,000 federal credit applied. Calculates your real payback period.
Open calculator →Paint Quantity Calculator
Estimate how many litres of paint you need for a room based on wall area, number of coats, and paint coverage.
Open calculator →Solar Panel Payback Calculator
Find out how many years it takes for solar panel savings to pay back the installation cost.
Open calculator →Are Solar Panels Worth It in 2026? Payback Calculator
Find out if solar panels are worth it in 2026 with current UK and US incentives. Calculates your real payback period after the 0% VAT relief or the expired US federal tax credit.
Open calculator →Freelance & Business
Freelance Day Rate Calculator
Work out the day rate you need to charge to hit your target annual income, accounting for unpaid days, expenses, and tax.
Open calculator →Hourly to Salary Calculator
Convert an hourly wage into an equivalent annual salary based on the hours you work each week.
Open calculator →Profit Margin Calculator
Calculate your gross profit and profit margin percentage from revenue and cost.
Open calculator →VAT Calculator
Add or check VAT on a price. Works out the VAT amount and the gross total from a net figure.
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