Calculators

Percentage Calculator What is X% of Y, what percent one number is of another, and back again. Percentage Change Calculator Increase or decrease between two numbers, with the direction stated plainly. Discount Calculator Sale price, what you save, and the original price worked backwards from the sale. Sales Tax Calculator Add tax, remove tax from a gross figure, or derive the rate from both prices. Tip Calculator Tip and total, split any number of ways, with per-person rounding. Average Calculator Mean, median, mode and range from a list you can paste in any format. Ratio Calculator Simplify a ratio, scale it, or split an amount in a given proportion. Fraction Calculator Add, subtract, multiply and divide fractions, simplified and as a decimal. Scientific Calculator Trigonometry, logs, powers and roots, with a history of what you evaluated.

Loan Calculator Monthly payment, total interest and a year-by-year schedule, extra payments included. Mortgage Calculator The full monthly payment — principal, interest, property tax, insurance and HOA. Car Loan Calculator Payment and true cost, with the trade-in sales-tax credit most US states allow. Compound Interest Calculator Growth with regular deposits, at any compounding frequency, year by year. Simple Interest Calculator Interest, principal, rate or time — plus what the same money would do compounded. Savings Goal Calculator How much a month, or how long, to reach a target from where you are now. Retirement Calculator Your pot at retirement in both nominal and today's money, and what it pays out. Debt Payoff Calculator How long a balance takes to clear, and whether the payment clears it at all. ROI Calculator Total return and annualised return (CAGR), including when a loss makes it undefined. Inflation Calculator What money will still buy, and what it takes to keep pace with rising prices. Salary to Hourly Calculator Any pay period converted to every other, with a month treated as annual ÷ 12. Fuel Cost Calculator Trip fuel cost across MPG, L/100km and km/L, split between passengers.

BMI Calculator Body Mass Index, your category, and the healthy weight range for your height. BMR Calculator Calories burned at rest, by Mifflin-St Jeor or revised Harris-Benedict. Body Fat Calculator US Navy estimate from tape measurements, with fat and lean mass. Ideal Weight Calculator A healthy range, plus all four classic formulas so you can see them disagree. Calorie Calculator Maintenance calories and loss or gain targets, with a safe-minimum warning. Water Intake Calculator A daily fluid estimate from weight, exercise and climate, in glasses too. Running Pace Calculator Solve pace, time or distance, with race presets and a split table.

GPA Calculator Credit-weighted grade point average, on a 4.0 scale with or without +/− steps. Grade Calculator Your weighted grade so far, and the score you need on the final to hit a target.

Budget Calculator Split your take-home pay across needs, wants and savings — 50/30/20, or your own shares. Net Worth Calculator Everything you own minus everything you owe, itemised. Never linked to an account. Emergency Fund Calculator The target, the gap, and how long it takes at what you are putting aside. Break-Even Calculator The units and revenue that cover your costs, and whether a price ever can. Profit Margin Calculator Margin and markup side by side — the same profit, two very different percentages.

Dividend Reinvestment Calculator What reinvesting dividends is worth against banking them, on the same price path. Stock Average Calculator Average cost per share across several buys, with the fees counted in the basis. Crypto Profit Calculator Profit, ROI and the break-even price once fees on both sides are counted. Annuity Calculator Future value, present value, or the income a lump sum pays out.

401(k) Calculator Projected balance, and what the employer match is actually worth over the term. Roth IRA Calculator The tax-free balance, against a traditional and a taxable account on equal footing. Pension Calculator A pot that is invested, or an income from salary and service — they are not the same thing. FIRE Calculator Your number, the years to it, and the coast figure that lets you stop adding. RMD Calculator What you are required to withdraw this year, from the IRS factor for your age. SWP Calculator What a withdrawal plan leaves, and the amount growth alone would fund forever. Savings Drawdown Calculator How long a pot lasts once inflation is raising every payment you take.

Take-Home Pay Calculator Gross to net, with your own tax rate and the deductions in the order they happen. Income Tax Estimator A progressive schedule you enter yourself, band by band, with the effective and marginal rates side by side. Self-Employment Tax Calculator US Social Security and Medicare on profit — including the wage base a day job has already used. Capital Gains Tax Calculator The gain after buying and selling costs, the tax on it at your rate, and what a loss means. VAT / GST Calculator Add tax to a price, or take out the tax a price already contains — not the same sum.

Mortgage Affordability Calculator How much house your income and debts actually support — and which limit is the one holding you back. Mortgage Refinance Calculator The break-even on the fees, and the lifetime interest a lower payment can quietly raise. APR Calculator The quoted rate with the fees folded back in, so two offers can be compared on the same footing. Lease vs Buy Calculator Both paths over the same years, net of what you still own at the end — and what the answer hangs on.