Business & Finance Tools
Loans, invoices, engineering calculators
Compound Interest
Free online compound interest. Interest with monthly/yearly contributions. 100% client-side — your data stays private.
Mortgage Calculator
Free online mortgage calculator. Monthly payment and amortization schedule. 100% client-side — your data stays private.
Investment Return
Free online investment return. ROI, CAGR, future value calculator. 100% client-side — your data stays private.
Budget Planner
Free online budget planner. Income vs expense budget tracker. 100% client-side — your data stays private.
Salary Converter
Free online salary converter. Hourly/weekly/monthly/annual converter. 100% client-side — your data stays private.
Profit Margin
Free online profit margin. Revenue/cost/profit margin calculation. 100% client-side — your data stays private.
Break-Even Point
Free online break-even point. Fixed/variable cost break-even analysis. 100% client-side — your data stays private.
Inflation Calculator
Free online inflation calculator. Purchasing power over time. 100% client-side — your data stays private.
Loan Amortization
Free online loan amortization. Full amortization table generator. 100% client-side — your data stays private.
Credit Card Payoff
Free online credit card payoff. Payoff timeline with interest savings. 100% client-side — your data stays private.
Tax Bracket Calculator
Free online tax bracket calculator. Estimate federal income tax brackets. 100% client-side — your data stays private.
Retirement Calculator
Free online retirement calculator. 401k/IRA projection with growth. 100% client-side — your data stays private.
Invoice Generator
Free online invoice generator. Generate professional invoices. 100% client-side — your data stays private.
Receipt Generator
Free online receipt generator. Simple receipt maker. 100% client-side — your data stays private.
Business Plan Outliner
Free online business plan outliner. Business plan template structure. 100% client-side — your data stays private.
SWOT Analysis Tool
Free online swot analysis tool. Strengths/Weaknesses/Opportunities/Threats. 100% client-side — your data stays private.
Meeting Cost Calculator
Free online meeting cost calculator. Cost of meeting time by attendees. 100% client-side — your data stays private.
Productivity Score
Free online productivity score. Daily productivity self-assessment. 100% client-side — your data stays private.
Eisenhower Matrix
Free online eisenhower matrix. Urgent/important priority matrix. 100% client-side — your data stays private.
SMART Goal Tracker
Free online smart goal tracker. Specific/Measurable/Achievable/Relevant/Time-bound. 100% client-side — your data stays private.
Weekly Planner
Free online weekly planner. Generate weekly schedule templates. 100% client-side — your data stays private.
Expense Tracker
Free online expense tracker. Basic income/expense log. 100% client-side — your data stays private.
P&L Calculator
Free online p&l calculator. Simple profit and loss statement. 100% client-side — your data stays private.
Timesheet Tracker
Free online timesheet tracker. Simple weekly timesheet. 100% client-side — your data stays private.
Ohm's Law Calculator
Free online ohm's law calculator. V=IR with all 4 permutations. 100% client-side — your data stays private.
Resistor Color Code
Free online resistor color code. Decode 4/5/6 band resistor to ohms. 100% client-side — your data stays private.
Power Calculator
Free online power calculator. Electrical power P=VI, P=I²R calculations. 100% client-side — your data stays private.
Wire Gauge Calculator
Free online wire gauge calculator. AWG to mm², current capacity. 100% client-side — your data stays private.
Beam Deflection
Free online beam deflection. Simple beam loading calculations. 100% client-side — your data stays private.
Gear Ratio
Free online gear ratio. RPM, torque, gear ratio calculations. 100% client-side — your data stays private.
Torque Calculator
Free online torque calculator. Force × distance calculations. 100% client-side — your data stays private.
Flow Rate Calculator
Free online flow rate calculator. Pipe flow, velocity, cross-section. 100% client-side — your data stays private.
Circuit Impedance
Free online circuit impedance. RLC impedance, resonance frequency. 100% client-side — your data stays private.
Structural Load
Free online structural load. Dead/live load estimation. 100% client-side — your data stays private.
Shaft Torque
Free online shaft torque. Power transmission calculations. 100% client-side — your data stays private.
Pressure Drop
Free online pressure drop. Pipe friction loss (Darcy-Weisbach). 100% client-side — your data stays private.
Scale Converter
Free online scale converter. Convert blueprint/architectural scales. 100% client-side — your data stays private.
Square Footage
Free online square footage. Area calculator for rooms/floors. 100% client-side — your data stays private.
Aspect Ratio
Free online aspect ratio. Width/height ratio converter. 100% client-side — your data stays private.
Slope Calculator
Free online slope calculator. Rise/run, degrees, percentage grade. 100% client-side — your data stays private.
Concrete Calculator
Free online concrete calculator. Yards needed for slabs/columns. 100% client-side — your data stays private.
Paint Calculator
Free online paint calculator. Gallons needed by wall area. 100% client-side — your data stays private.
Material Calculator
Free online material calculator. Estimate materials by dimensions. 100% client-side — your data stays private.
Blueprint Converter
Free online blueprint converter. Decimal-feet / feet-inches / meters. 100% client-side — your data stays private.