Age Calculator
Calculate your exact age in years, months, and days.
Everyday calculators
Quick, clean calculators for percentages, tips, discounts, and basic math you actually use.
Area of a circle
Compute area using radius or diameter. Shows exact and decimal forms.
BMI Calculator
Calculate your body mass index and see your category on a simple BMI reference chart.
Days between dates
Calculate how many days are between two dates. Includes weeks + days format.
Discount calculator
See how much you save and what you will pay after a percent off sale. Perfect for shopping and budgeting.
Fraction calculator
Add, subtract, multiply, divide, and simplify fractions instantly. Includes mixed-number output.
Graphing calculator
Plot functions like x^2, sin(x), and e^x with custom x and y ranges.
Hours worked calculator
Calculate total hours worked, including breaks and overnight shifts.
Mortgage calculator
Estimate monthly payments, total cost, and interest on a home loan.
Paycheck calculator
Estimate take-home pay after taxes, FICA, and other deductions.
Percentage calculator
Find percentages, percentage increase, and percentage decrease in a single, simple tool.
Percentage decrease calculator
Find the percentage decrease from an original value to a new value. Useful for discounts, budgeting, or tracking reductions.
Percentage increase calculator
Find the percentage increase from an original value to a new value. Great for price changes, grades, and income.
Tip calculator
Work out tip amount, total bill, and split per person for restaurant checks and group payments.
Universal dosage calculator
Nursing math helper for dose-to-volume, weight-based dosing, and IV drip rates. Educational use only.