Life Tools

Essential everyday online tools including calculators, unit converters, date calculators, health calculators and more.

401k Calculator - Estimate Your 401k Contribution | Employer Match & Retirement Savings
Free 401k calculator to estimate your 401k contribution amount, employer match, and future retirement balance. Compare Traditional vs Roth 401k, check contribution limits, and plan your retirement savings strategy with compound growth projections.
401k Growth Calculator - Retirement Compound Interest Predictor | Employer Match
Free 401k growth calculator to project your retirement balance with compound interest. Estimate employer match contributions, check 401k annual limits, and compare Traditional vs Roth 401k. Get year-by-year breakdown and 4% safe withdrawal rate for retirement planning.
401k Employer Match Calculator - Maximize Your 401k Match | Free Retirement Tool
Free 401k employer match calculator to estimate your employer match amount, total annual contribution, and retirement balance. Check 401k contribution limits, compare Traditional vs Roth 401k, and maximize your employer match benefits with compound growth projections.
401k Retirement Calculator - Estimate Your 401k Balance at Retirement | Free Tool
Free 401k retirement calculator to estimate your 401k balance at retirement. Input salary, contribution rate, and employer match to project total savings with compound interest, tax savings, and annual contribution limits. Generate yearly growth charts for informed retirement planning.
529 College Savings Calculator - Estimate Education Costs | Free 529 Plan Tool
Free 529 college savings calculator to estimate future education costs and plan your 529 contributions. Account for college tuition inflation, compound interest growth, and monthly savings to determine if you're on track. Includes 529 account earnings calculation and funding gap analysis.
529 Plan Calculator - College Savings Calculator | Education Fund Growth
Free 529 plan calculator to estimate your education fund growth with tax-free compound interest. Compare account balance against projected college costs, calculate coverage rate, and identify funding gaps. Adjust contribution strategies to achieve your college savings goals.
CFM Calculator - Air Flow Calculator | HVAC Duct Sizing
Free CFM calculator and air flow calculator for HVAC duct sizing. Calculate cubic feet per minute from duct diameter and air velocity, or find duct size from target CFM. Includes air changes per hour and cooling load estimate.
Airport Code Lookup - IATA 3 Letter Code | Airport Code Search
Free airport code lookup tool with a database of 200+ global airports. Search by IATA 3 letter code, city name, or airport name to find airport details. Includes airport code list by continent and common airport codes reference table.
Aquarium Volume Calculator - Aquarium Water Capacity | Glass Thickness Deduction
Free aquarium volume calculator that computes aquarium water capacity online, automatically deducts glass thickness and reserves a safe water level. Supports one-click substrate volume estimation and common aquarium size presets. Enter length, width, height and glass thickness to get actual water volume in liters and gallons, making aquarium water capacity calculation closer to real fish keeping scenarios. Suitable for cube tanks, round tanks and irregular tanks, with all calculations done locally in the browser and no data uploaded to any server.
Asphalt Calculator - Asphalt Tonnage Calculation | Paving Material Estimate
Free asphalt calculator that computes asphalt volume and tonnage online for driveways, parking lots and paving projects. Supports rectangular and circular areas with switchable metric and imperial units, built-in asphalt density and compaction factor, and automatic cost estimation. Enter length, width or radius plus paving thickness to get asphalt volume and tonnage instantly. Multi-area summary lets you add several sections and total them up, making paving material estimate fast and accurate. Suitable for driveway asphalt and parking lot asphalt planning, with all calculations done locally in the browser and no data uploaded to any server.
Asset Allocation - Investment Portfolio | Diversification & Risk Score
Asset allocation and investment portfolio calculator that generates a live pie chart from asset amounts, showing allocation percentage, category count, largest holding concentration and risk score. Supports stocks, bonds, real estate, commodities, cryptocurrency and cash, helping investors optimize asset structure and reduce investment risk. Built-in diversification metrics and largest holding concentration analysis make portfolio review fast and accurate. Suitable for individual investors planning asset allocation, with all calculations done locally in the browser and no data uploaded to any server.
Depreciation Calculator - Fixed Asset Depreciation | Straight-Line Double-Declining Sum-of-Years-Digits
Free depreciation calculator that computes fixed asset depreciation online using straight-line depreciation, double-declining balance method and sum-of-years-digits method. Enter asset cost, salvage value and useful life to instantly generate a full sum-of-years-digits depreciation schedule with annual depreciation, accumulated depreciation and ending book value. Built for asset depreciation accounting and accounting depreciation provision tasks, this tool helps accountants and finance staff handle fixed asset depreciation without manual errors. The depreciation calculator runs entirely in the browser, requires no registration and keeps all data local.

About Life Tools Tools

Life Tools is a comprehensive collection of practical everyday online tools covering finance, health & fitness, education planning, and more. The 401k calculator helps American workers estimate retirement savings with employer match calculations and compound growth projections. The 529 college savings calculator assists families in planning education funds, accounting for tuition inflation and investment returns.

Health and fitness tools include the 1RM calculator (one rep max estimation), BMI calculator (Body Mass Index), and calorie calculators, helping users scientifically plan fitness programs and health management. The 1RM calculator supports maximum weight estimation for squat, bench press, and deadlift, generating training load charts.

Financial calculation tools include compound interest calculator, savings goal calculator, and ROI calculator, helping users with financial planning and decision-making. The compound interest calculator simulates fund growth under different principal amounts, interest rates, and time periods—the best tool for understanding the power of compound interest.

Additionally, Life Tools offers date calculators, unit converters, and other everyday utilities to meet various calculation needs in work, study, and daily life. All tools are based on standard algorithms with accurate and reliable results, completely free, no registration required, with data processed locally in your browser for maximum privacy protection.