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Calculate your monthly mortgage payment, total interest paid, and full amortization schedule.

Compare your existing mortgage against a proposed new one, including closing costs, and find the point at which the switch pays for itself.

Work backward from your income and existing debts to the maximum home price and monthly payment you can realistically carry.

Compare the total cost of renting against the total cost of owning the same home over your expected time horizon.

Turn a listing into the numbers investors underwrite on: net operating income, monthly cash flow and cash-on-cash return.

Find the yield a property produces independent of financing, with implied value across a range of cap rates and the gross rent multiplier alongside.

See what sending extra money toward principal each month does to your payoff date and the interest you avoid.

Compare a standard monthly schedule against paying half your payment every two weeks, and see the interest and years it saves.

Put two loans side by side on the same home price and down payment, and compare monthly payment, total interest and total cost.

Work out the cash you need for a given down payment percentage, and how many months of saving it takes to get there.

Find what percentage the cash you actually put in earns each year, after operating expenses, vacancy and mortgage payments.

Work out whether a short-term rental actually makes money once platform fees, cleaning, management and vacancy are priced in.

Apply the 70% rule to a flip: enter the after-repair value, your repair budget and the asking price to find your maximum allowable offer.

The fastest screen in real estate: purchase price divided by annual gross rent, shown alongside cap rate and implied value.

Normalize asking prices by finished living area so you can place several properties on the same scale.

Work out what a tenant owes for a partial month, with the daily rate and the amount due for a mid-month move-in or move-out.

Calculate Stamp Duty Land Tax (SDLT) on UK residential property purchases, including first-time buyer relief and additional property surcharge.

Calculate monthly car payments and total cost of an auto loan.

Calculate monthly payments and total cost for a personal loan.

Calculate total interest paid over the life of any loan.

Find the remaining balance on your loan at any point during the term.

Calculate balloon loan monthly payments and the final lump sum payment.

Compare total cost of leasing vs buying a vehicle over the same period.

See how much you save by transferring credit card debt to a 0% intro APR card.

Calculate your debt-to-income ratio to assess loan affordability.

Calculate your credit utilization ratio and its impact on your credit score.

See how much you save by consolidating multiple debts into a single loan.

Understand the difference between APR and interest rate and compare loan true costs.

Calculate the after-tax cost of debt for corporate financial analysis.

Calculate the true APR of a payday loan and see how costs escalate.

Calculate total finance charges and interest on any loan.

Compare avalanche and snowball debt payoff strategies for credit cards, personal loans, car loans, and more. See exactly how much interest you save and how fast you become debt-free.

Track income, bills, expenses, debt payments and savings across all 12 months, with a running balance, spending breakdown and trend chart.

Calculate compound interest growth over time with optional deposits.

Find out how much to save monthly to reach your savings goal.

See how regular investments grow over time using DCA.

Convert nominal interest rate to APY (Annual Percentage Yield) for accurate comparison.

Calculate the Weighted Average Cost of Capital for company valuation.

Calculate bond yield to maturity for fixed income investment analysis.

Calculate how long your savings will last given your monthly expenses.

See how inflation erodes purchasing power and the real value of money over time.

Project your net worth growth over time based on assets, savings, and debt payoff.

Total assets minus total debts, projected forward from your savings rate, asset growth and the payments you make toward debt.

Calculate how much to buy or sell to rebalance your investment portfolio.

Find the recommended asset allocation based on age, risk tolerance, and goals.

Estimate how long it takes to double your investment.

Calculate dividend yield and annual income from dividend-paying stocks.

See how dividend reinvestment compounds wealth over time.

Calculate total return on a stock investment including dividends and capital gains.

Calculate total return for any investment holding period.

Calculate capital gains yield — the return from price appreciation alone.

Calculate crypto profit, loss, and capital gains tax liability.

Calculate the return on investment for any financial decision.

Calculate your inflation-adjusted real rate of return.

Calculate the P/E ratio to assess stock valuation relative to earnings.

Calculate the Graham Number to find the intrinsic value of a stock.

Calculate at what price a margin call is triggered on a leveraged stock position.

Price European stock options using the Black-Scholes model.

Calculate monthly contributions needed to build a sinking fund for a future expense.

Calculate how much you need in an emergency fund based on your essential monthly expenses.

Calculate Net Present Value of an investment to determine viability.

Calculate the Internal Rate of Return (IRR) for a series of cash flows.

Calculate the Sharpe ratio to measure risk-adjusted portfolio returns.

See how brokerage fees and expense ratios drag on long-term investment returns.

Estimate what you keep from a US salary after pre-tax contributions, the standard deduction, federal brackets and FICA.

Convert your annual salary to an equivalent hourly rate, or calculate your annual pay from an hourly wage.

Calculate how much more you'll take home after a pay raise, factoring in taxes and social security.

Calculate your take-home pay as a contractor. Compare Inside vs Outside IR35 and see the equivalent permanent salary.

Quickly add or remove VAT from an amount. Calculate net, VAT, and gross values easily.

Determine your ideal hourly rate based on your income goals, expenses, taxes, and billable hours for the 2026 tax year.

Calculate the true cost of your daily commute. Compare driving vs. public transport and see your annual spending.

Calculate your startup's monthly burn rate and cash runway with our startup runway calculator.

Calculate the long-term financial impact of switching careers. Compare cumulative earnings and see your breakeven point.

Calculate how inflation affects the purchasing power of your salary over time.

Project your retirement nest egg and find out if you're on track.

Calculate your (Financial Independence, Retire Early) number and how long until financial independence.

Calculate how long your retirement savings last at different withdrawal rates.

Identify the gap between your projected retirement savings and your income goal.

Calculate how long until you become a millionaire.

Estimate defined benefit pension payments in retirement.

Estimate monthly income from purchasing a lifetime annuity.

Calculate how much retirement income you need accounting for inflation.

Compare a defined benefit pension vs a defined contribution plan.

Calculate the risk of outliving your retirement savings.

Calculate the impact of making salary sacrifice contributions.

Find the sales volume needed to cover all business costs.

Calculate gross margin, markup, and profit percentage for any product or service.

Calculate selling price from cost using a markup percentage.

Calculate monthly payments and total cost for a business or SBA loan.

Compare total cost of leasing vs buying business equipment.

Calculate SaaS customer lifetime value (LTV) and LTV:CAC ratio.

Calculate how long it takes to recover customer acquisition costs.

Calculate customer churn rate and its impact on MRR and LTV.

Project monthly business cash flow over 12 months.

Estimate total startup costs and initial capital requirements for a new business.

Estimate business valuation using revenue multiples, EBITDA, and assets methods.

Estimate SaaS company valuation based on ARR, growth, and Rule of 40.

Calculate founder equity dilution through multiple investment rounds.

Calculate a fair equity split between co-founders based on contribution factors.

Project Annual Recurring Revenue growth with churn and expansion assumptions.

Calculate Return on Ad Spend (ROAS) for any advertising campaign.

Calculate DSCR to assess business loan serviceability.

Calculate Net Operating Income for business or real estate analysis.

Calculate the quick ratio to assess company short-term liquidity.

Calculate inventory turnover ratio to measure supply chain efficiency.

Calculate working capital and current ratio to measure operational liquidity.

Calculate the cost of unproductive time and meetings in your organisation.

Calculate revenue per employee to benchmark business productivity.