fnltools.com
Free online tools for everyday life
fitness
Learn more →BMI Calculator – Calculate Your Body Mass Index
Free online BMI calculator. Enter your height and weight to instantly calculate your Body Mass Index and find out if you're in a healthy range.
BMR Calculator – Basal Metabolic Rate
Free BMR calculator using Mifflin-St Jeor and Harris-Benedict formulas. Find out how many calories your body burns at rest.
Body Fat Calculator – Estimate Your Body Fat Percentage
Free body fat calculator using the U.S. Navy method. Enter your measurements to estimate body fat percentage and lean mass.
Calorie Deficit Calculator – How Many Calories to Lose Weight
Free calorie deficit calculator. Enter your stats to find out how many calories you need per day to lose weight safely and effectively.
Ideal Weight Calculator – Find Your Healthy Weight Range
Free ideal weight calculator using Devine, Robinson, Miller, and Hamwi formulas. Enter your height and sex to find your ideal body weight.
Running Pace Calculator – Pace, Time & Distance
Free running pace calculator. Calculate your pace from a finish time, your finish time from a pace, or your distance. Includes race splits for 5K, 10K, half marathon, and marathon.
TDEE Calculator – Total Daily Energy Expenditure
Free TDEE calculator. Find out how many calories you burn per day based on your age, sex, height, weight, and activity level.
Weight Loss Calculator – How Long to Reach Your Goal Weight
Free weight loss calculator. Enter your current weight, target weight, and activity level to find your daily calorie target and estimated time to reach your goal.
financial
Learn more →Compound Interest Calculator — See Your Money Grow
Free compound interest calculator. Calculate how your savings and investments grow over time with compound interest and monthly contributions.
Loan & Mortgage Payment Calculator
Free loan payment calculator. Calculate your monthly mortgage or loan payment, total interest, and view the full amortization schedule.
Savings Goal Calculator — How Much to Save Per Month
Free savings goal calculator. Find out exactly how much you need to save each month to reach your financial goal on time.
Tip Calculator — Calculate Tips & Split Bills
Free tip calculator. Quickly calculate tips for any bill amount, choose your tip percentage, and split the bill between friends.
text-tools
Learn more →Binary Converter — Encode & Decode Binary
Free binary converter. Convert numbers or text to binary and binary back to numbers or text instantly.
Hex Converter — Encode & Decode Hexadecimal
Free hex converter. Convert numbers or text to hexadecimal and hex back to numbers or text instantly.
Morse Code Converter — Encode & Decode Morse Code
Free Morse code converter. Convert text to Morse code and Morse code back to text instantly.
Roman Numeral Converter — Encode & Decode Roman Numerals
Free Roman numeral converter. Convert numbers to Roman numerals and Roman numerals back to numbers instantly.
String Reverser — Reverse Text Online
Free string reverser tool. Reverse text by characters, words, or lines instantly.
Word Counter – Count Words, Characters & Reading Time
Free online word counter. Instantly count words, characters, sentences, paragraphs, and estimated reading time as you type. No sign-up needed.