Calculators
Financial, mathematical, and health calculators designed with clarity. Calculate percentage differences, loan repayments with interest schedules, exact chronological age, BMI with WHO classifications, and compound growth.
Available Calculators (22)
Percentage Calculator
Calculate percentage of a number, percentage change, increase, and decrease.
BMI Calculator
Calculate Body Mass Index (BMI) with metric or imperial units and WHO categories.
Age & Date Difference Calculator
Calculate exact chronological age in years, months, days, hours, and minutes.
Loan & Mortgage Calculator
Calculate monthly payments, total interest, and amortization breakdown.
Free PDF Invoice Generator
Create and download professional PDF invoices with custom taxes, discounts, and currencies.
Salary & Paycheck Calculator
Calculate your exact take-home pay after federal tax, state tax, and deductions.
Freelance Hourly Rate Calculator
Calculate your ideal billable hourly rate based on living expenses, billable hours, and profit goals.
Compound Interest Calculator
Visualize the exponential growth of your investments over 1 to 30 years with compounding interest.
Crypto Profit & Loss Calculator
Calculate cryptocurrency profit, loss, return on investment (ROI %), and net exchange fees.
GPA & CGPA Calculator
Calculate semester GPA and cumulative CGPA on a standard 4.0 scale with letter grades.
Scientific Calculator
Evaluate trigonometry, logarithms, square roots, powers, and algebraic expressions.
TDEE Calculator
Calculate Total Daily Energy Expenditure and basal metabolic rate to reach your weight goals.
Macro & Calorie Deficit Calculator
Calculate daily protein, carbohydrate, and healthy fat grams for cutting, maintenance, or bulking.
Body Fat Percentage Calculator
Measure body fat percentage using the official US Navy circumference tape method.
Daily Water Intake Calculator
Calculate recommended daily water intake in liters, ounces, and glasses based on weight and activity.
Intermittent Fasting Calculator & Planner
Plan fasting and eating windows for 16:8, 18:6, 20:4, and OMAD fasting protocols.
Pregnancy Due Date & Conception Calculator
Estimate expected delivery date (EDD), current gestational age, and trimester timeline.
Mortgage & Amortization Calculator
Calculate monthly mortgage payments (P&I, taxes, insurance, PMI) and total interest schedule.
Rent vs Buy Calculator
Compare the long-term financial net worth of renting vs buying a home over 5 to 20 years.
Car Loan & Auto Financing Calculator
Calculate monthly car payments, interest cost, down payments, and trade-in deductions.
Fuel Cost & Gas Trip Calculator
Calculate total gas cost for road trips, fuel consumption in liters, and cost per passenger.
Tip & Split Bill Calculator
Calculate restaurant tips (15%, 18%, 20%) and split dining bills evenly between guests.
Explore Other Categories
Image Tools
Compress, resize, convert, crop, and optimize images locally in your browser.
PDF Tools
Merge, split, rotate, convert, and organize PDF documents securely on your device.
Developer Tools
Format JSON, inspect JWTs, test regular expressions, encode Base64, and generate hashes.
SEO Tools
Preview SERP listings, analyze keyword density, generate robots.txt, and build Schema markup.