Clinical and financial tools for physicians — calculate BMI, body fat percentage, blood pressure categories, estimate retirement savings, and plan investments. All free, private, and instant.
No sign-up · No data sent to servers · Instant results
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Convert between px, rem, em, pt, and other CSS units
Use tool →Calculate percentages, increases, decreases, and changes
Use tool →Calculate compound interest with contributions and visual growth chart
Use tool →Estimate US federal income tax with brackets, FICA, and take-home pay
Use tool →Calculate your total net worth from assets minus liabilities
Use tool →Calculate your total net worth by listing assets and liabilities
Use tool →Calculate sales tax for any US state with multi-item and reverse modes
Use tool →Track and categorize blood pressure readings with averages, trends, and health risk indicators
Use tool →Calculate your Body Mass Index with visual BMI scale
Use tool →Estimate body fat percentage using the US Navy method and BMI formula
Use tool →Calculate your target heart rate zones for optimal training using the Karvonen formula
Use tool →Calculate Health Savings Account tax savings and investment growth over time.
Use tool →Project your 401(k) retirement savings with employer matching, catch-up contributions, and growth analysis
Use tool →Calculate dollar-cost averaging returns with DCA vs lump sum comparison
Use tool →Calculate dividend income with DRIP reinvestment, yield on cost tracking, dividend growth projections, and compound growth visualization
Use tool →Calculate your Financial Independence, Retire Early (FIRE) number with Lean, Regular, and Fat FIRE variants, savings projections, and milestone timeline
Use tool →Calculate investment growth with monthly contributions and dividends
Use tool →Estimate retirement savings, income, and how much to save monthly
Use tool →Calculate return on investment, annualized ROI, and compare investments
Use tool →Estimate your Social Security retirement benefits based on earnings history and claiming age
Use tool →Learn how to calculate your monthly mortgage payment with the amortization formula. Includes examples, tips for getting lower rates, and a free calculator.
Read guide →Learn how to calculate your Body Mass Index (BMI) with the simple formula. Understand what your BMI means, its limitations, and when to use other health metrics.
Read guide →Understand compound interest and how it makes your money grow exponentially. Learn the formula, see real examples, and discover strategies to maximize compound growth.
Read guide →Learn how to calculate your Total Daily Energy Expenditure (TDEE) and create a calorie deficit for healthy weight loss. Includes formulas, activity multipliers, and a free calculator.
Read guide →NexTool offers BMI calculators, body fat percentage estimators, blood pressure category tools, heart rate zone calculators for patient counseling, plus financial tools like retirement planners, investment calculators, and income tax estimators for high-earner tax planning.
Yes. Our BMI, body fat, heart rate, and blood pressure calculators use standard medical formulas and provide instant results perfect for patient education during consultations. All data stays in your browser.
Absolutely. Our retirement calculator, investment calculator, net worth tracker, and income tax calculator are ideal for physicians planning around student loan repayment, high-income tax strategies, and wealth building.
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