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Mortgages & Home Finance
Calculate mortgage payments, compare loan options, estimate affordability and plan your home purchase with accurate financial tools.
Loans & Credit
Calculate loan payments, compare debt strategies, and understand the true cost of borrowing with our comprehensive loan calculators.
Savings & Investing
Forecast investment growth, calculate compound interest, estimate returns, and plan your savings goals with precision.
Retirement & Pensions
Plan your retirement with calculators for pension growth, withdrawal strategies, FIRE targets, and required savings.
Salary & Employment
Convert between salary frequencies, calculate overtime pay, estimate contractor rates, and understand your total compensation.
Business & Profit
Calculate profit margins, break-even points, SaaS metrics, marketing ROI, and essential business financial ratios.
Percentages & Everyday Math
Calculate percentages, ratios, averages, and solve everyday math problems quickly and accurately.
Fractions & Numbers
Perform fraction arithmetic, find GCD/LCM, check prime numbers, and convert between number formats.
Algebra
Solve equations, calculate slopes, find polynomial roots, and work with exponential and logarithmic functions.
Geometry
Calculate areas, perimeters, volumes, and surface areas for 2D and 3D shapes with step-by-step formulas.
Trigonometry
Calculate trigonometric functions, convert angles between degrees and radians, and solve triangle problems.
Statistics & Probability
Calculate standard deviation, confidence intervals, regression, probability distributions, and combinatorics.
Date & Time
Calculate age, days between dates, business days, time differences, and work hours with calendar-aware tools.
Unit Conversions
Convert between metric, imperial, and scientific units for length, area, volume, mass, temperature, speed, energy, and more.
Construction & Building
Calculate material quantities for concrete, bricks, flooring, paint, roofing, fencing, and landscaping projects.
Electrical & Electronics
Calculate voltage, current, resistance, power, battery capacity, and electronic circuit values using Ohm's law and beyond.
Physics
Calculate force, energy, momentum, pressure, density, wave properties, optics, and thermodynamic quantities.
Chemistry
Calculate molar mass, concentrations, pH, gas law quantities, reaction yields, and solution dilutions.
Health & Body Metrics
Calculate BMI, calorie needs, macros, body composition, and pregnancy milestones with validated clinical formulas.
Pregnancy & Fertility
Estimate due dates, gestational age, conception dates, and ovulation windows. All results are estimates — consult your healthcare provider.
Cooking & Kitchen
Scale recipes, convert cooking measurements, calculate baker's percentages, and estimate cooking times.
Automotive
Calculate fuel costs, MPG, EV charging, tire sizes, gear ratios, and engine specifications for cars and vehicles.
Computing & Digital
Calculate storage capacity, screen resolution, aspect ratios, RAID configurations, and digital data metrics.
Agriculture & Farming
Calculate crop yields, fertilizer rates, irrigation water requirements, seeding rates, and livestock feed and management metrics.
Electronics & Circuits
Calculate electrical power, circuit parameters, component sizing, and electronic design values for engineering projects.
Employment & Work Hours
Calculate overtime pay, double time rates, premium work hours, and statutory employment wage entitlements.
Everyday Utilities
Practical calculators for everyday household calculations, baker's percentages, recipe scaling, and daily lifestyle math.
Finance & Wealth
Plan your financial future with calculators for retirement projections, 401(k) plans, investment returns, bond pricing, loans, and wealth building.
Fitness & Exercise
Optimize training and nutrition with calculators for one-rep max (1RM), calorie expenditure, TDEE, running pace, heart rate zones, and body composition.
2D Geometry
Calculate areas, perimeters, side lengths, diagonals, and angles for triangles, rectangles, trapezoids, polygons, and 2D planar shapes.
3D Geometry
Calculate volumes, surface areas, slant heights, and spatial dimensions for spheres, pyramids, prisms, frustums, and 3D solids.
Mathematics
Solve mathematical problems across fraction arithmetic, prime factorization, logarithms, coordinate geometry, probability, and foundational equations.
Networking & IP
Calculate IPv4 and IPv6 subnets, CIDR notation, VLSM allocations, usable host ranges, download times, and network bandwidth.
Sports & Running
Calculate running pace, split times, race finishes, power-to-weight ratios, and training loads for 5K, 10K, and endurance athletic events.
Time & Calendar
Calculate business days between dates, exclude holidays and weekends, and count down exact durations to future events.
Unit Conversion Tools
Convert everyday measurements between metric and imperial systems for length, volume, mass, and kitchen ingredients.
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