Compound Interest
Estimate growth of an investment or savings with compound interest. For illustration only.
Free tools for everyday money maths and light health estimates. Results are illustrative only — not financial, tax, investment, or medical advice. Read each tool's assumptions and our disclaimer before relying on any figure.
See how savings, investments, pensions and emergency funds can grow over time.
Estimate growth of an investment or savings with compound interest. For illustration only.
See how much to save each month to reach your target. For illustration only.
See how much you will have in the future with your current monthly savings. For illustration only.
Quick estimate: how many years to double your money at a given rate. For illustration only.
Plan your emergency fund target and estimate how long it may take to reach it. For illustration only.
Estimate pension uplift from salary sacrifice, tax/NI savings and employer match assumptions. For illustration only.
Work out repayments and total cost for loans, mortgages and other borrowing.
Estimate monthly repayments for a loan or mortgage. For illustration only.
Compare payoff strategies: highest interest first vs smallest balance first. For illustration only.
See how extra or lump-sum payments reduce your loan term and total interest. For illustration only.
Estimate borrowing and property range using both income multipliers and payment-based affordability. For illustration only.
Split bills, fuel and EV costs, unit conversion, salary to hourly, take-home pay, and tiered commission.
Split a bill between people with an optional tip. For illustration only.
Estimate petrol/diesel or electric cost from distance, economy and price. For illustration only.
Convert length, mass, speed, temperature and volume; the output list matches the dimension you pick. For illustration only.
Convert between annual salary and hourly rate. For illustration only.
Estimate UK take-home from gross salary with optional student loan, pension and other deductions. For illustration only.
Work out commission when rates change by sales band (marginal tiers). For illustration only.
Quick body composition and nutrition estimates for everyday planning.
Calculate BMI and a healthy weight range from height and weight. For illustration only.
Estimate BMR and TDEE from body stats and activity level. For illustration only.
Estimate body fat percentage from body measurements with the US Navy method. For illustration only.