This is a free online age calculator that computes your exact age in years, months, and days from your date of birth.
Free online auto loan calculator. Estimate monthly car payments, total loan interest, sales tax, and trade-in value deductions.
This is a free online basic calculator with memory functions that handles everyday arithmetic — addition, subtraction, multiplication, and division.
This is a free online BMI calculator that computes your Body Mass Index from height and weight and shows whether you are underweight, normal, overweight, or obese.
Free online BMR calculator. Calculate Basal Metabolic Rate using Mifflin-St Jeor and Harris-Benedict formulas.
This is a free online body fat calculator that estimates your body fat percentage using the U.S. Navy method from neck, waist, and hip measurements.
Free online calorie calculator. Estimate daily calorie needs based on age, gender, height, weight, and activity level for weight loss or gain.
Free online Celsius to Fahrenheit converter. Convert °C to °F instantly with formula and temperature reference chart.
Free online compound interest calculator. Calculate growth over time with initial deposit, monthly contributions, and compounding frequency.
This is a free online date calculator that computes the number of days between two dates and lets you add or subtract days from a given date.
Free online discount calculator. Calculate sale price, money saved, and final cost with percentage-off deals.
Free online Feet to Centimeters converter. Convert ft to cm instantly with formula and height conversion reference chart.
Free online fraction calculator. Add, subtract, multiply, and divide fractions and mixed numbers with step-by-step simplifying.
Free online full screen calculator with large buttons and high-contrast display. Ideal for presentations, classrooms, accessibility, and desktop work.
This is a free online GPA calculator that computes your Grade Point Average from courses and credit hours using a 4.0 or custom grading scale.
This is a free online grade calculator that determines the minimum score you need on your final exam to achieve your desired course grade.
Free online hours calculator. Calculate total time elapsed, work shift hours, and break deductions between start and end times.
Free online ideal weight calculator. Calculate healthy weight range using Devine, Robinson, Miller, and Hamwi formulas.
Free online Inches to Centimeters converter. Convert inches to cm instantly with formula and length conversion chart.
Free online investment calculator. Calculate Return on Investment (ROI), total profit, and annualized compound returns.
Free online Kilograms to Pounds converter. Instantly convert kg to lbs with formula and conversion table.
Free online loan calculator. Calculate monthly loan payments, total interest paid, and payoff schedule for personal or business loans.
Free online love calculator. Calculate love compatibility percentage between two names with fun algorithm results.
Free online Miles to Kilometers converter. Convert miles to km instantly with formula and distance conversion chart.
Free online mortgage calculator. Estimate monthly home loan payments and amortization schedules based on principal, interest rate, and term.
Free online 1RM one-rep max calculator. Calculate your 1-rep maximum lifting capacity using Epley and Brzycki formulas.
Free online interactive Japanese Soroban abacus. Learn mental math, place value counting, and physical bead manipulation.
Free on-screen actual size online ruler calibrated to your screen. Measure objects in centimeters, millimeters, or inches directly on your display.
Free online Ounces to Grams converter. Convert oz to g instantly with formula and kitchen weight conversion chart.
Free online secure password generator. Create strong, random passwords with customizable length, symbols, numbers, and uppercase characters.
Free online percentage calculator. Calculate percentage increase, decrease, percentage of numbers, and fraction conversions instantly.
Free online pregnancy due date calculator. Calculate estimated due date and gestational trimester milestones using Naegele's rule.
Free online random name picker. Draw winner names randomly for raffles, giveaways, classroom calls, and team selections.
Free online ratio calculator. Solve for unknown values in proportions (A:B = C:D), simplify ratios, and scale ratios.
Free online 401k and retirement calculator. Estimate retirement nest egg savings, employer match, and monthly withdrawal income.
Free online sales tax calculator. Calculate gross price, sales tax amount, and net pre-tax price instantly.
Free online savings goal calculator. Calculate how much to save monthly to reach your target savings goal.
Free online scientific calculator with trigonometry, logarithms, powers, roots, factorials, and DEG/RAD modes. Supports full keyboard input and expression history.
Free online standard deviation calculator. Calculate sample and population standard deviation, mean, variance, and sum of squares.
Free online tip calculator with bill splitting. Calculate tip percentage, per-person total, and custom gratuity amounts.
Free online triangle calculator. Calculate area, perimeter, angles, and sides using Pythagorean theorem and trigonometric laws.