Tip Calculator
Calculate tips and split bills
Fast, Focused Calculators
Get instant results for your specific needs. Each calculator is designed to solve one problem perfectly.
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Available Calculators
💰 Freelancer Hourly Rate Calculator
Calculate the perfect hourly rate based on your expenses, taxes, and desired income. Perfect for freelancers and consultants.
🏠 Mortgage Payment Calculator
Calculate monthly payments, total interest, and loan amortization for mortgages and loans. Includes taxes and insurance.
🍳 Recipe Scaling Calculator
Scale recipe ingredients up or down for any serving size. Perfect for meal planning and cooking adjustments.
⏰ Time Duration Calculator
Calculate time differences, add/subtract time, and convert between time formats. Perfect for project planning.
📏 Unit Converter Calculator
Convert between metric and imperial units. Length, weight, temperature, and more. Instant conversions.
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🧾 Tip Calculator
Calculate tips and split bills among multiple people. Perfect for dining out and group expenses.
⚖️ BMI Calculator
Calculate your Body Mass Index and get health category information. Supports metric and imperial units.
📈 Compound Interest Calculator
Calculate compound interest growth for investments and savings over time. Includes monthly contributions.
🏷️ Discount Calculator
Calculate discounts, sale prices, and percentage savings quickly. Perfect for shopping and sales.
🎂 Age Calculator
Calculate exact age in years, months, days, and more from birth date. Includes next birthday countdown.
🚗 Engine & Horsepower Calculator
Calculate engine displacement, horsepower, carburetor CFM, compression ratio, and torque. Perfect for automotive enthusiasts.
⛽ Fuel & Fuel Economy Calculator
Calculate fuel costs, gas mileage, MPG, fuel savings, EV charging costs and time, and fuel economy conversions. Complete fuel calculator suite.
🚗 Vehicle Loan & Lease Calculator
Calculate auto loans, car leases, ATV loans, boat loans, motorcycle loans, RV loans, and compare lease vs buy options. Complete vehicle financing suite.
🔧 Wheels & Tires Calculator
Calculate tire sizes, speedometer error, wheel offset, tire comparisons, conversions, and speedometer gear corrections. Complete tire calculator suite.
🔄 Automotive Unit Converter
Convert automotive units including fuel economy, EV efficiency, speed, torque, and SAE to metric measurements. Complete automotive conversion suite.
🔨 Carpentry & Trim Calculator
Calculate board feet, framing materials, rafter lengths, trim requirements, cabinet doors, wainscoting, and more. Complete carpentry toolkit for contractors and DIY.
🧱 Concrete & Masonry Calculator
Calculate concrete volumes, block quantities, rebar requirements, mortar needs, footings, and more. Complete masonry toolkit for construction professionals.
🏡 Deck & Patio Calculator
Calculate deck boards, balusters, stain coverage, paver quantities, base materials, and polymeric sand. Complete outdoor construction toolkit.
️ Driveway Calculator
Calculate asphalt, concrete, and gravel quantities, plus sealer coverage for driveway construction and maintenance. Professional pavement tools.
🚧 Fence Calculator
Calculate fence materials, vinyl fencing, post hole concrete, and stain coverage. Complete fencing toolkit for installation and maintenance.
🏠 Flooring Calculator
Calculate flooring materials, carpet, tile quantities and costs. Convert linear feet to square feet. Complete flooring toolkit for contractors.
🌱 Lawn & Landscaping Calculator
Calculate lawn, landscaping, and outdoor materials. Grass seed, sod, mulch, soil, pool volume, and more. Complete outdoor project toolkit.
💰 Business Finance Calculator
Calculate ROI, CAGR, profit margins, markups, depreciation, IRR, and more. Essential financial analysis tools for business owners and analysts.
📊 Interest & Loan Calculators
Calculate loan payments, amortization schedules, compound interest, APR, and more. Essential tools for borrowing and lending decisions.
📈 Investment & Annuity Calculators
Calculate bond prices and yields, stock profits, annuity payments, and investment returns. Professional tools for investment analysis.
💳 Personal Finance Calculators
Calculate salary conversions, net worth, debt ratios, pay raises, tips, and budget planning tools for smart money management.
🏘️ Real Estate Calculators
Calculate cap rates, rental property returns, mortgage payoff strategies, and real estate commissions. Essential tools for property investment.
🧮 Basic Math Calculators
Standard and scientific calculators with full mathematical functions. Trigonometry, logarithms, square roots, and more advanced operations.
🔢 Fraction Calculators
Complete fraction calculation suite. Add, subtract, multiply, divide fractions. Convert between decimals, mixed numbers, and improper fractions.
📐 Geometry Calculators
Calculate areas, volumes, perimeters, and surface areas for all shapes. Circles, triangles, rectangles, spheres, cylinders, cones, and more.
📚 Grade Calculators
Calculate GPA, final grades, weighted grades, semester grades, class rank, and grade conversions. Essential academic tools for students.
🔢 Number System Calculators
Convert between number systems: binary, decimal, hexadecimal, octal. Roman numerals, scientific notation, and universal base converter.
📊 Percentage Calculators
Calculate percentage changes, increases, decreases, differences, errors, and conversions. Complete percentage calculation toolkit.
📏 Ratio & Proportion Calculators
Calculate and simplify ratios, solve proportions, cross multiplication, and convert between ratios, decimals, and percentages.
📈 Statistics Calculators
Comprehensive statistics suite: mean, median, mode, standard deviation, probability distributions, t-tests, correlation, regression, and more.
⚖️ Body Measurement Calculators
Complete body measurement suite: BMI, body fat percentage, ideal weight, body ratios, military body fat tests, and specialized health metrics.
🥗 Nutrition & Diet Calculators
Comprehensive nutrition suite: BMR, TDEE, macro calculators, calorie planning, weight management, and dietary tools for optimal health.
💪 Fitness Calculators
Complete fitness suite: calories burned, strength calculators, military fitness tests, activity trackers, heart rate zones, and performance metrics.
⚡ Electrical Conversion Calculators
Convert between electrical units: amps, watts, volts, horsepower, kilowatts. Essential tools for electricians and engineers.
⚡ Electrical Calculators
Professional electrical engineering tools: Ohm's law, voltage, current, resistance, power, wire sizing, and circuit calculations.