All Tools
20 free calculators — percentage, age, tip, salary, compound interest, calories, GPA, body fat, and more. Instant results, all in your browser.
Calculate "X% of Y", "X is what % of Y", and percentage change between two numbers.
Calculator ToolsCalculate your exact age in years, months, days, hours, and minutes from your birthday.
Calculator ToolsDays between two dates, add/subtract days. Shows business days, weeks, and months.
Calculator ToolsCalculate tips and split bills between friends. Preset 15%, 18%, 20%, 25% buttons.
Calculator ToolsCalculate sale prices, savings, and stacked discounts. Optional sales tax.
Calculator ToolsSee how your money grows with compound interest and monthly contributions.
Calculator ToolsCalculate daily calorie needs (TDEE/BMR) for weight loss, maintenance, or gain.
Calculator ToolsCalculate your GPA on the 4.0 scale. Add courses, grades, and credit hours.
Calculator ToolsConvert between hourly, daily, weekly, biweekly, monthly, and annual salary.
Calculator ToolsEstimate body fat percentage using the US Navy method. No equipment needed.
Calculator ToolsCalculate monthly mortgage payments, total interest, and compare loan terms.
Calculator ToolsConvert times between zones instantly. World clock with 10 major cities.
Calculator ToolsCount down to any date or event. Live updating days, hours, minutes, seconds.
Calculator ToolsGenerate random numbers in any range. Cryptographically secure, no duplicates option.
Calculator ToolsCalculate running pace, speed, and predicted 5K/10K/half/marathon times.
Calculator ToolsCalculate monthly payments, total interest, and full amortization schedule for any loan — mortgage, auto, personal.
Calculator ToolsCalculate your Body Mass Index instantly. Imperial and metric units. See your category and healthy weight range.
Calculator ToolsFind the simplified aspect ratio from any dimensions, or resize by a target ratio.
Calculator ToolsCalculate your burn rate, runway, and zero date instantly. See exactly when the money runs out.
Calculator ToolsCalculate the right image dimensions for print on demand products. Check DPI and resolution.
Calculator ToolsSplit your income using the 50/30/20 rule. Visual bars, custom splits, annual projections.
Calculator ToolsCalculate stock profit or loss with commissions. ROI percentage, color-coded results.
Calculator ToolsCalculate position size based on account size, risk percentage, and stop loss.
Calculator ToolsCalculate risk/reward ratio, breakeven win rate, and visual risk/reward bar.
Calculator ToolsDollar-cost averaging vs lump sum. Project future value with recurring investments.
Calculator ToolsCalculate your financial independence number and years to FIRE.
Calculator ToolsCompare snowball vs avalanche strategies. See payoff dates and interest saved.
Calculator ToolsCalculate dividend yield and DRIP projections over time.
Calculator ToolsCalculate options P&L for calls and puts, long and short positions.
Calculator ToolsVisualize portfolio allocation with a pie chart. Add holdings, see percentages.
Calculator ToolsConvert between annual, monthly, biweekly, weekly, daily, and hourly rates.
Calculator ToolsCalculate your net worth — assets minus liabilities with visual breakdown.
Calculator ToolsTrack expenses by category. Monthly totals, CSV export, saves to your browser.
Calculator ToolsConvert 30+ currencies with live ECB exchange rates. Updated daily.