Free Calculators
16 free calculators for health, finance, dates, school, and everyday math. Instant results, no sign-up, works offline.
16calculators
0sign-up needed
100%free forever
Most popular
BMI Calculator
Free BMI calculator. Instantly calculate your Body Mass Index using weight and height — no sign-up required.
Loan Calculator
Free loan calculator. Calculate monthly payments, total interest, and amortization schedule — no sign-up needed.
Percentage Calculator
Free percentage calculator. Calculate percent of a number, percent change, and ratio instantly — no sign-up.
Tip Calculator
Free tip calculator. Calculate tip amount, split bills evenly, and round totals — instant results, no sign-up.
Mortgage Calculator
Free mortgage calculator. Calculate monthly PITI payment and full amortization schedule — no sign-up needed.
Age Calculator
Free age calculator. Find your exact age in years, months, and days from any birthdate — no sign-up needed.
Calorie Calculator
Free calorie calculator. Calculate daily calorie needs by age, weight, height, and activity level instantly.
Discount Calculator
Free discount calculator. Find sale price and exact savings from any percentage off — no sign-up needed.
Pregnancy Due Date Calculator
Free due date calculator. Find estimated birth date from last menstrual period or conception date instantly.
Ovulation Calculator
Free ovulation calculator. Find your fertile window and ovulation date by cycle — no sign-up needed.
Body Fat Percentage Calculator
Estimate body fat percentage using the US Navy method from neck, waist, and hip measurements
Compound Interest Calculator
Free compound interest calculator. Project investment growth over time with adjustable rate and contributions.
Date Difference Calculator
Free date difference calculator. Find the exact days, weeks, months, and years between any two dates instantly.
Retirement Savings Calculator
Free retirement savings calculator. Project your nest egg and monthly income at retirement — no sign-up needed.
GPA Calculator
Free GPA calculator. Calculate your grade point average from course grades and credit hours — no sign-up needed.
Grade Calculator
Free grade calculator. Calculate your final course grade from weighted assignments and exams — no sign-up.
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Health & Fitness
Finance & Money
Dates & Time
School & Education