Free tools for smarter decisions
Calculators, website checks and research tools for finance, business, SEO and AI visibility. Each one shows how its answer is worked out.
Try it nowCompound interest
$
$
After 10 years you'd have
Open the full calculator →$59,164
You put in $40,000. Interest adds $19,164.Finance & FinTechMortgage CalculatorCompare interest-only and repayment mortgage payments, interest and loan-to-value. Interest-only payments leave the capital due at term.Monthly interest-only payment: $1,300Open the calculator Finance & FinTechLoan CalculatorEstimate repayments and total interest for a fixed-rate personal or business loan.You'd pay each month: $630Open the calculator Finance & FinTechEMI CalculatorCalculate an equated monthly instalment (EMI), total interest and total repayment for a fixed-rate loan.Estimated monthly EMI: $630Open the calculator Finance & FinTechCar Loan CalculatorEstimate monthly car-finance repayments, interest cost and total amount repaid after a deposit or trade-in.Estimated monthly payment: $630Open the calculator Finance & FinTechCompound Interest CalculatorProject how a lump sum and regular contributions can grow when returns compound over time.After 10 years you'd have: $74,000Open the calculator Finance & FinTechInvestment CalculatorEstimate future investment value from a starting amount, regular contributions, expected return and time horizon.Estimated future value: $90,000Open the calculator Finance & FinTechCurrency ConverterConvert an amount at today's live mid-market rate across 150+ currencies, or enter a rate you've been quoted to see what it works out to.Live rates: 150+ currenciesOpen the calculator Finance & FinTechPercentage CalculatorCalculate a percentage of a number, the percentage one value is of another, or the percentage change between two values.25% of 200: 50Open the calculator Finance & FinTechSavings CalculatorProject a savings balance from a starting amount, regular deposits, interest rate and saving period.Projected savings balance: $28,000Open the calculator Finance & FinTechInvestment Growth CalculatorProject investment growth with a starting balance, monthly contributions and an assumed annual return.After 15 years you'd have: $170,000Open the calculator Finance & FinTechStock Return CalculatorCalculate share-investment return from purchase price, current or sale price, shares, dividends and fees.Your total return: 33.5%Open the calculator Finance & FinTechDividend CalculatorEstimate annual dividend income and dividend yield from shares held, dividend per share and share price.Your yearly dividend income: $190Open the calculator Finance & FinTechDividend Reinvestment CalculatorModel how reinvesting dividends can increase share count, portfolio value and future dividend income over time.Estimated portfolio value: $30,000Open the calculator Finance & FinTechInflation CalculatorEstimate how inflation changes future prices and the purchasing power of today’s money.In 10 years the same things cost: $1,700Open the calculator Finance & FinTechAPR CalculatorEstimate the effective annual percentage rate of a loan after interest and upfront fees.Estimated effective APR: 12.6%Open the calculator Finance & FinTechInterest Rate CalculatorEstimate the annual interest rate implied by a loan amount, repayment amount and term.Estimated nominal annual rate: 9.5%Open the calculator Finance & FinTechCredit Card Interest CalculatorEstimate card interest and repayment time from the balance, APR and monthly payment.Estimated months to repay: 36 monthsOpen the calculator Finance & FinTechDebt Repayment CalculatorEstimate how long a debt takes to repay, total interest and the effect of paying more each month.Estimated months to debt-free: 48 monthsOpen the calculator Finance & FinTechDollar-Cost Averaging CalculatorModel regular investing at changing average prices to estimate units accumulated, cost basis and portfolio value.Estimated current value: $11,000Open the calculator Finance & FinTechCrypto Profit CalculatorCalculate crypto profit or loss from buy price, sell/current price, quantity and trading fees without requiring live market data.Profit / loss: $3,700Open the calculator Business & Start-upsROI CalculatorMeasure return on investment from cost and gain, including percentage and absolute profit or loss.Return on investment: 35%Open the calculator Business & Start-upsProfit Margin CalculatorCalculate net profit and profit margin from revenue and total costs.Net profit margin: 25%Open the calculator Business & Start-upsBusiness Valuation CalculatorEstimate an indicative business value from earnings or revenue, a chosen multiple, debt and surplus cash.Indicative equity value: $2,500,000Open the calculator Business & Start-upsStartup Valuation CalculatorCalculate pre-money and post-money valuation from an investment amount and the equity offered.Pre-money valuation: $5,600,000Open the calculator Business & Start-upsInvoice GeneratorCreate a professional A4 invoice with an optional logo, itemised charges, tax and payment details.Open the tool Business & Start-upsBreak-Even CalculatorCalculate break-even units and break-even revenue from fixed costs, selling price and variable cost per unit.Units to break even: 834 unitsOpen the calculator Business & Start-upsRevenue Growth CalculatorCalculate revenue growth or decline between two periods.Revenue growth: 30%Open the calculator Business & Start-upsGross Margin CalculatorCalculate gross profit and gross margin from revenue and cost of goods sold.Gross margin: 40%Open the calculator Business & Start-upsMarkup CalculatorCalculate selling price and gross profit from cost and target markup.Markup: 66.7%Open the calculator Business & Start-upsBurn Rate CalculatorCalculate monthly gross spending, net cash burn and a simple runway estimate from cash, monthly expenses and monthly income.Net burn each month: $63,000Open the calculator Business & Start-upsRunway CalculatorEstimate how many months cash will last at the current net burn rate.Months of runway: 10 monthsOpen the calculator Business & Start-upsARR CalculatorCalculate annual recurring revenue from the number of paying customers and their average monthly or yearly subscription price.Annual recurring revenue: $370,000Open the calculator Business & Start-upsMRR CalculatorCalculate monthly recurring revenue from recurring subscriptions and plan values.Monthly recurring revenue: $63,000Open the calculator Business & Start-upsSaaS Metrics CalculatorSee ARR, average revenue per customer, simplified lifetime value and monthly surplus from subscription business inputs.Annual recurring revenue: $750,000Open the calculator Business & Start-upsCAC CalculatorCalculate customer acquisition cost from sales and marketing spend and new customers acquired.Customer acquisition cost: $250Open the calculator Business & Start-upsLTV CalculatorEstimate simplified subscription customer lifetime value from average monthly revenue, gross margin and monthly churn.Estimated customer LTV: $5,000Open the calculator Business & Start-upsLTV:CAC Ratio CalculatorCompare customer lifetime value with acquisition cost and calculate the LTV:CAC ratio.LTV:CAC ratio: 3.33:1Open the calculator Business & Start-upsChurn Rate CalculatorCalculate customer churn rate from customers at the start of a period and customers lost.Churn rate: 2.5%Open the calculator Business & Start-upsFounder Equity CalculatorModel a simple founder equity split using contribution weights such as cash, time, idea, sales and product work.Founder A modelled ownership: 54%Open the calculator Business & Start-upsEquity Dilution CalculatorCalculate ownership dilution after a new investment round or share issue.Your ownership after the round: 48%Open the calculator Web & SecurityWebsite Speed TestCheck whether a page is up, how fast it responds, and its Core Web Vitals when Google has them.Open the tool Web & SecuritySSL CheckerInspect a site’s TLS certificate, issuer, subject, validity dates and days remaining where the host allows certificate inspection.Open the tool Web & SecurityRedirect CheckerFollow a URL’s redirect chain and show each HTTP hop until the final destination.Open the tool Web & SecurityWebsite Security CheckerCheck HTTPS, security headers, mixed content and warning signs in the address itself, such as hidden logins and look-alike domains.Open the tool Web & SecurityBroken Link CheckerScan links found on one public page and test a controlled sample for broken or failing destinations.Open the tool SEO & MarketingWebsite SEO CheckerCheck a page the way a search engine reads it: title, description, headings, images, canonical, robots, sharing tags and structured data, in one pass.Open the tool SEO & MarketingSERP Preview ToolPreview how a title, URL and meta description may appear in a search result before publishing.Open the tool SEO & MarketingUTM BuilderBuild a campaign URL with standard UTM source, medium, campaign, term and content parameters.Open the tool SEO & MarketingQR Code GeneratorGenerate a downloadable QR code for a URL or short text locally in your browser, without sending the value to an external rendering service.Open the tool SEO & MarketingAI Search Readiness CheckerCheck observable page, metadata, structured-data and crawler-access signals relevant to search and AI-assisted discovery, without claiming to predict citations.Open the tool Finance & FinTechMoney Transfer Cost ComparisonCompare what two transfer providers really charge once the fee and the exchange-rate margin are added together.Provider A delivers more, by: $160Open the calculator Finance & FinTechPayment Processor Fee CalculatorSee what Stripe, PayPal, Square or any processor keeps from your sales, and what a cheaper rate would save.Switching would save each month: $75Open the calculator Finance & FinTechInterchange Plus CalculatorWork out what your processor adds on top of interchange, and whether a blended rate or interchange-plus is cheaper for your card mix.Interchange-plus saves each month: $380Open the calculator Finance & FinTechChargeback Cost CalculatorAdd up what a chargeback really costs once the fee, lost goods, staff time and the ratio risk are counted, and see what prevention is worth.Chargebacks cost you each month: $3,800Open the calculator Finance & FinTechBuy Now Pay Later Cost CalculatorCompare paying by buy-now-pay-later, a credit card or cash, including late fees and interest, before you tap the button.Open the calculator Business & Start-upsBusiness Loan Affordability CalculatorFind the largest business loan your cash flow can service, using the debt service coverage ratio lenders apply.Your cash flow supports borrowing up to: $600,000Open the calculator Business & Start-upsRevenue-Based Financing CalculatorTurn a revenue-share offer into a repayment timeline and an effective APR, then compare it with a term loan.Effective annual cost of this offer: 12.9%Open the calculator Business & Start-upsInvoice Factoring Cost CalculatorPrice an invoice-finance offer: advance rate, discount fee, service fee and what it costs against waiting or a loan.Factoring this invoice costs: $1,700Open the calculator Finance & FinTechWays to Borrow ComparisonCompare a personal loan, a credit card and buy-now-pay-later for the same amount and payoff period, in total cost.Open the calculator Business & Start-upsMerchant Cash Advance CalculatorConvert a factor rate and daily card sweep into the true annual rate, and see what the same money costs as a loan.The factor rate works out to an APR of: 113.2%Open the calculator Finance & FinTechLoan Overpayment CalculatorSee how much interest an extra monthly payment saves and how many months it cuts, versus investing the same money.Overpaying saves you in interest: $1,300Open the calculator Business & Start-upsSAFE Note CalculatorWork out how many shares a SAFE converts into, and the founder dilution, under a valuation cap, a discount, or both.The SAFE converts into ownership of: 5.9%Open the calculator Business & Start-upsConvertible Note CalculatorModel a convertible note with interest, a cap and a discount, and see exactly what it dilutes at the next round.The note dilutes existing holders by: 7.6%Open the calculator Business & Start-upsCap Table CalculatorSimulate up to three funding rounds with option-pool top-ups and see what founders, employees and each investor own at the end.Founders own at the end: 46.0%Open the calculator Business & Start-upsStartup Valuation Methods CalculatorValue a pre-revenue startup three ways — Berkus, scorecard and the VC method — and get a range to anchor your ask.A defensible pre-money valuation is around: $7,200,000Open the calculator Business & Start-upsSaaS Pricing Model CalculatorCompare per-seat, usage-based and tiered pricing on your own customer base and see which earns more revenue.Tiered pricing earns the most MRR: $110,000Open the calculator Business & Start-upsNet Revenue Retention CalculatorCalculate NRR and GRR from expansion, contraction and churn, and see whether growth is coming from your existing customers.Net revenue retention: 107.0%Open the calculator Business & Start-upsCAC Payback CalculatorFind how many months a new customer takes to repay their acquisition cost on gross margin, and whether to scale spend.Months to recover the cost of a customer: 10.3 monthsOpen the calculator Business & Start-upsSaaS Magic Number CalculatorCompute the SaaS magic number from quarterly revenue growth and prior-quarter spend, and decide whether to invest more in sales.SaaS magic number: 1.3:1Open the calculator Finance & FinTechCrypto Tax CalculatorEstimate capital gains tax on a crypto sale in the UK, US, Canada or Australia, and see whether waiting or splitting the sale saves tax.Estimated tax on this sale: $2,700Open the calculator Finance & FinTechStaking Rewards CalculatorProject staking income with compounding, convert APR to APY, and see what a price fall would do to the value of the rewards.Tokens earned from staking: 175.76Open the calculator Finance & FinTechImpermanent Loss CalculatorSee how much a liquidity position loses against simply holding when prices diverge, and the fee yield needed to make up for it.Impermanent loss against holding: 2.0%Open the calculator Finance & FinTechLiquidation Price CalculatorFind the price at which a leveraged position is liquidated, how far away it is, and what leverage keeps you safe for a given move.Open the calculator Finance & FinTechSavings Rate Comparison CalculatorCompare your savings rate with the best available and inflation, in real terms, and see what switching earns you.Switching would earn you extra over the period: $2,000Open the calculator Finance & FinTechTax-Free Allowance CalculatorSee how much of this year's ISA, 401(k), TFSA or Super allowance you have left and what filling it is worth over time.Open the calculator Finance & FinTechEmergency Fund CalculatorWork out how many months of expenses you should hold, how far you are from it, and when to stop saving cash and start investing.You should hold 3.5 months of expenses: $11,000Open the calculator Finance & FinTechTake-Home Pay CalculatorEstimate net pay after income tax and social contributions in the UK, US, Canada or Australia, and compare two offers.Estimated annual take-home: $61,000Open the calculator Finance & FinTechDividend Safety CalculatorCheck whether a dividend is covered by earnings and free cash flow, what yield you're really getting, and whether it looks sustainable.Dividend yield: 5.0%Open the calculator Finance & FinTechPosition Size CalculatorSize a trade from your account, the risk you'll accept and your stop-loss, so a wrong call costs only what you planned.Buy this many shares: 72Open the calculator Finance & FinTechPortfolio Rebalancing CalculatorEnter current holdings and target weights and get the exact buys and sells to rebalance, with new money used first.Largest drift from target: 10.0%Open the calculator Finance & FinTechFund Fee Impact CalculatorSee what a fund's ongoing charge costs you over decades against a cheaper alternative, in pounds and in years of retirement.The dearer fund costs you over the period: $110,000Open the calculator Business & Start-ups13-Week Cash Flow ForecastProject the next thirteen weeks of cash from receipts and payments, find the low point, and see if you need a facility.Lowest cash balance, week 8: $16,000Open the calculator Business & Start-upsPricing Strategy CalculatorCompare cost-plus, value-based and competitor-anchored prices for a product and see the profit each one produces.Competitor-anchored price earns the most profit: $82Open the calculator Business & Start-upsFreelance Day Rate CalculatorSet a day rate that covers your target income, business costs, unbillable time, holidays and tax, then compare it with employment.Charge at least this per day: $650Open the calculator
No tool matches that search.
Start with a topic
Guides
Every tool, grouped by the decision it helps with, with the questions people ask along the way.
10 toolsLoans and debtMonthly payments, true APR and total cost for personal, car and student loans; the fastest way out of credit-card debt; and whether consolidating, transferring or overpaying actually saves money.Open the guide 6 toolsBudgeting and savingSplit your pay with the 50/30/20 rule, size an emergency fund, hit a savings goal by a date and see what compound interest and inflation do to money over time.Open the guide 8 toolsInvestingGrowth of a lump sum or regular investment, real returns after fees and inflation, portfolio risk and rebalancing, and the maths behind bonds, fund fees and dollar-cost averaging.Open the guide 4 toolsStocks and dividendsProfit on a share trade after costs and tax, dividend yield and income, reinvestment growth, intrinsic value by discounted cash flow, and whether a dividend is safe.Open the guide 5 toolsCryptoProfit and tax on crypto sales, staking and stablecoin yields, impermanent loss in liquidity pools, liquidation prices on leveraged and collateralised positions, mining profitability and token vesting.Open the guide 11 toolsStartup fundraising and equityValuation methods, SAFE and convertible note conversion, cap tables, dilution, option pools, liquidation preferences, burn rate and runway.Open the guide 12 toolsSaaS metricsARR and MRR, CAC and LTV, churn and net revenue retention, payback, magic number, quick ratio, rule of 40, pricing and trial conversion: the numbers investors and operators track.Open the guide 12 toolsBusiness finance and pricingMargins and markup, break-even, discounts, invoices, working capital, and the true cost of business borrowing from term loans to factoring and merchant cash advances.Open the guide 5 toolsPayments and fintechCard processing fees, interchange-plus pricing, chargebacks, surcharges, failed-payment recovery, downtime cost, FX margins, money transfer costs and the licences a fintech needs.Open the guide
