Stop retyping your money into ten different tools

Project 401(k) growth with employer match, IRS limits, catch-up contributions, inflation-adjusted balance, and retirement income.

Compare Airbnb short-term rental income with long-term leasing. Analyze occupancy, nightly rates, and expenses to maximize your rental profit.

Convert APR to APY or APY back to APR using annual, monthly, daily, custom, or continuous compounding.

Build a target allocation across stocks, bonds, cash and alternatives using age, horizon, risk tolerance, current mix and return assumptions.

Estimate a car lease payment with MSRP, negotiated price, residual value, APR, fees, taxes, down payment, and trade-in value.

Calculate weighted average buy price from multiple purchases. Track total quantity, invested capital, current value, and unrealized profit or loss.

Estimate first-year baby costs from one-time setup purchases and recurring weekly or monthly expenses like diapers, formula, clothes, childcare, and insurance.

Estimate Bitcoin mining profit with hashrate, network difficulty, block reward, electricity cost, pool fees, and ASIC hardware payback.

Calculate adult BMI in metric or imperial units. See your BMI category, healthy weight range, and CDC/NIH guidance for interpreting results.

Estimate how much of your bonus you actually take home after federal or main withholding, state tax, and other payroll deductions.

Calculate break-even units, break-even revenue, target-profit sales, contribution margin, and margin of safety for a product or small business.

Plan a monthly budget by comparing net income to savings, housing, food, debt, utilities, transport, and other recurring spending categories.

Calculate CAC, LTV, LTV/CAC ratio, gross-profit customer value, cohort ROI, and payback orders from marketing spend, sales spend, margin, and retention assumptions.

Run everyday arithmetic or switch to a larger math model for expressions, percentages, roots, powers and trig.

Estimate daily calorie targets for weight loss using BMR, activity level, maintenance calories, and mild to aggressive deficit plans.

Estimate realized capital gains after cost basis, fees, tax, holding period, break-even price, and after-tax ROI.

Estimate auto loan payments with taxes, fees, trade-in, rebates and extra principal payments.

Estimate your annual carbon footprint from flights, driving, transit, home energy, diet, household size, and offsets.

Calculate the power of compound interest. Simulate future investment value with regular contributions, variable rates, and compounding periods.

Compare monthly expenses between two cities, estimate the income needed to maintain purchasing power, and see which categories drive the difference.

Estimate real ownership value from purchase price, usage, maintenance, resale, and rental alternatives.

Calculate how long it takes to pay off credit card debt. Estimate total interest, payoff months, and payment impact using APR and monthly payment.

Estimate how utilization, missed payments, hard inquiries, and on-time streaks may move a FICO-style credit score.

Calculate crypto profit and loss with leverage. Analyze liquidation prices, trading fees, and funding rates for long and short positions.

Convert 35 major currencies with live rates, cached fallback, cross-rates and travel-ready conversion details.

Create a high-interest-first debt payoff plan. Estimate payoff time, total interest, minimum payments, and monthly payoff velocity.

Build a smallest-balance-first debt payoff plan with quick wins, rollover payments and debt-free timeline.

Calculate the power of dividend reinvestment (DRIP). Simulate how buying additional shares with dividend payouts compounds your portfolio value over time.

Model per-order ecommerce profit after fees, shipping, returns, ad spend, and overhead with break-even price and max ad spend.

Estimate essential monthly expenses, target emergency savings, current coverage in months, and time to reach your cash buffer goal.

Estimate estate tax by modeling gross estate value, deductions, exemption, taxable estate, effective rate, and the net amount passing to heirs.

Compare gas and electric vehicle running costs. Estimate fuel savings, charging cost, maintenance, CO2 reduction, EV price premium payback, and ownership net savings.

Calculate a sustainable freelance hourly rate from take-home income, taxes, expenses, billable utilization, unpaid admin time, platform fees, quote padding, day rate, and retainers.

Calculate trip fuel cost, consumption, and passenger share splits

Plan gift expenses, track statuses, wrapping, and analyze spending by recipient.

Calculate the compounding financial cost of your habits over time and explore what you could save.

Calculate how much borrowing power you have in your home equity and estimate monthly payments for Loans or HELOCs.

Convert your hourly wage to annual, monthly, and daily salary, and compare it with full-time equivalent earnings.

Calculate impermanent loss when providing liquidity to an AMM pool, compare with HODL, and see if transaction fees offset the loss.

Calculate how inflation erodes your money's purchasing power over time and see the equivalent future value of your savings.

Estimate the maximum loan and home price your monthly budget can support. Include taxes, insurance, down payment, rate, and term.

Estimate the full monthly mortgage payment with principal, interest, property taxes, homeowners insurance, HOA, PMI, closing costs, extra payments, payoff time, and interest savings.

Calculate your personal net worth by subtracting your liabilities from your assets, and track your financial health over time.

Calculate potential profit or loss (PnL) for call and put options, model payoff scenarios, and analyze Black-Scholes Greeks.

Calculate your net take-home pay by factoring in federal, state, and FICA taxes.

Estimate monthly payments, total interest, origination fees, and the effective APR of your personal loan.

Estimate upfront setup costs and ongoing recurring expenses for a dog, cat, or custom pet, and calculate the total cost over their lifetime.

Estimate your annual and monthly property taxes based on property market value, assessment ratio, exemptions, and local percentage or millage tax rates.

Calculate the benefit of refinancing your mortgage or loan. Compare current vs new monthly payments, total interest savings, closing costs, and find your break-even period.

Compare renting versus buying with mortgage costs, closing costs, rent growth, appreciation, maintenance, PMI and invested cash.

Plan your financial independence. Estimate your target retirement nest egg, project future savings, analyze shortfall or surplus, and simulate drawdown over your lifetime.

Calculate your trade risk-to-reward ratio, determine exact position sizing based on your account balance, model leverage/margin, and define optimal stop loss and take profit targets.

Calculate return on investment (ROI) and annualized returns. Analyze profit, costs, and time to measure the efficiency of your capital.

Convert your annual, monthly, or hourly salary across multiple pay frequencies, adjust for vacation/holidays, and calculate your net income.

Calculate sales tax, VAT, or GST by adding it to a net price, or reverse-calculate to find the pre-tax base price.

Calculate how your savings will grow over time with compound interest, taxes, and inflation, or determine how much to save to reach your goal.

Estimate your self-employment taxes (Social Security & Medicare), QBI deduction, federal and state income taxes, and net take-home pay.

Calculate the payback period, lifetime savings, ROI, and internal rate of return (IRR) of installing solar panels on your property.

Split rent, bills and shared costs between roommates or partners — evenly or weighted by income — and send one link so everybody adds their own numbers.

Estimate your earnings from cryptocurrency staking by factoring in APY, compounding frequency, validator fees, price appreciation, and network inflation.

Calculate stock trade profit after buy/sell fees, dividends, taxes, ROI, and break-even price per share.

Calculate consolidation and refinance savings for multiple student loans, including interest savings, monthly payments, and break-even point.

Audit all your active subscriptions, identify unused or underutilized services, and calculate how much money you waste annually.

Calculate if upgrading to an annual subscription is cheaper than monthly, or compare lifetime vs yearly subscriptions. Estimate annual savings, ROI, and break-even payoff months.

Calculate how much capital you need to generate a target income after taxes, expenses, inflation, and savings progress.

Calculate how much to save regularly (weekly, monthly, etc.) to hit a financial target, accounting for compound interest, inflation, and annual boosters.

Calculate your target weight based on goal body fat percentage or plan a timeline to reach your goal weight with calorie deficit modeling.

Estimate your tax refund or balance due using income, filing status, deductions, credits, withholding and estimated payments.

Calculate elapsed time between two dates with total weeks, days, hours, minutes, weekdays and weekends.

Calculate restaurant tips, split bills, total tip, total bill and per-person amounts in seconds.

Compare prices for different package sizes, weights, and volumes to find the absolute best value with discounts and multi-pack support.

Plan vacation costs by budget, days, travel, lodging, food, activities and misc expenses. See total trip cost, daily spend and remaining cash.

Compare buying now versus waiting, investing the money, saving monthly and facing future price changes.

Estimate household water use from showers, toilets, laundry, dishes, outdoor watering and fixture efficiency.

Plan and manage your wedding budget. Estimate expenses, allocate funds based on recommended splits, and track actual vs. projected costs and cost-per-guest.