All Calculators & Tools
Find the right calculator by name, category or keyword. All tools are free to use.
All 100 Tools
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Ideal Weight Calculator
Estimate a healthy reference weight range from height using common height-based formulas.
Body Fat Calculator
Estimate body fat percentage from body measurements using the U.S. Navy method.
Macro Calculator
Calculate estimated daily protein, carbohydrate and fat targets from calories.
Water Intake Calculator
Estimate daily water intake from body weight.
TDEE Calculator
Estimate total daily energy expenditure from BMR and activity level.
Lean Body Mass Calculator
Estimate lean body mass from body weight and body fat percentage.
Heart Rate Zone Calculator
Calculate training heart-rate zones from age and resting heart rate using the Karvonen method.
One Rep Max Calculator
Estimate one-repetition maximum from weight lifted and repetitions.
Protein Intake Calculator
Estimate daily protein needs from body weight and a selected activity multiplier.
Body Surface Area Calculator
Estimate body surface area from height and weight using the Mosteller formula.
Waist to Hip Ratio Calculator
Calculate waist-to-hip ratio from two body measurements.
Calorie Deficit Calculator
Calculate a calorie deficit from maintenance calories and a chosen daily deficit.
Pace Calculator
Calculate running pace from distance and total time.
Army Body Fat Calculator
Estimate body fat using height, neck and waist measurements with the U.S. Navy-style method.
Calorie Burn Calculator
Estimate calories burned from activity duration and MET value.
Mortgage Calculator
Estimate monthly mortgage payment, total interest and total repayment.
Compound Interest Calculator
Calculate future value and interest growth with compound interest.
Simple Interest Calculator
Calculate simple interest and total amount from principal, rate and time.
Savings Calculator
Estimate savings growth with an initial balance and regular monthly contributions.
ROI Calculator
Calculate return on investment, profit and ROI percentage.
Sales Tax Calculator
Calculate sales tax amount and total price from a pre-tax amount.
VAT Calculator
Calculate VAT amount and VAT-inclusive or exclusive price.
Commission Calculator
Calculate sales commission and total earnings from a sale amount.
Paycheck Calculator
Estimate take-home pay from gross pay and a simple tax/deduction rate.
Hourly to Salary Calculator
Convert hourly pay into estimated annual salary from weekly hours and work weeks.
Salary to Hourly Calculator
Convert annual salary into an estimated hourly rate.
Future Value Calculator
Calculate future value from present value, rate and time.
Present Value Calculator
Discount a future amount back to present value.
Debt Payoff Calculator
Estimate payoff time and total interest for a debt with fixed monthly payments.
Credit Card Payoff Calculator
Estimate how long it takes to pay off a credit card balance with a fixed payment.
Break Even Calculator
Find the sales volume needed to cover fixed and variable costs.
Cash Flow Calculator
Calculate net cash flow from cash inflows and outflows.
Business Valuation Calculator
Estimate business value using annual earnings and a valuation multiple.
Stock Profit Calculator
Calculate stock investment profit, return and gain/loss percentage.
Dividend Yield Calculator
Calculate dividend yield from annual dividend per share and share price.
Fraction Calculator
Add, subtract, multiply or divide two fractions.
Ratio Calculator
Simplify a ratio and calculate a proportional value.
Average Calculator
Calculate the arithmetic mean of a list of numbers.
Median Calculator
Find the median of a list of numbers.
Mode Calculator
Find the most frequent value in a list of numbers.
Standard Deviation Calculator
Calculate population or sample standard deviation for a list of values.
GCD Calculator
Find the greatest common divisor of two integers.
LCM Calculator
Find the least common multiple of two integers.
Prime Number Checker
Check whether an integer is prime.
Quadratic Equation Calculator
Solve ax² + bx + c = 0 and show the roots or discriminant.
Final Grade Calculator
Calculate the final grade needed on an exam based on current grade and exam weight.
Grade Percentage Calculator
Convert points earned and total points into a percentage.
Weighted Grade Calculator
Calculate a weighted course grade from scores and weights.
Attendance Calculator
Calculate attendance percentage and the number of classes needed to reach a target.
Study Time Calculator
Estimate study time needed from a total topic load and available study hours per day.
Exam Score Calculator
Calculate an exam percentage and letter-grade estimate from marks.
Reading Time Calculator
Estimate reading time from word count and reading speed.
GPA Scale Converter
Convert a percentage or score into a simple 4.0 GPA estimate.
Date Difference Calculator
Calculate the number of days between two dates.
Add Days to Date Calculator
Add or subtract a number of days from a starting date.
Business Days Calculator
Count weekdays between two dates, excluding Saturdays and Sundays.
Countdown Calculator
Calculate the time remaining until a selected date and time.
Age at Date Calculator
Calculate age on a specific date rather than today.
Hours to Minutes Calculator
Convert hours and minutes into total minutes.
Seconds Converter
Convert seconds into hours, minutes and seconds.
Unix Timestamp Converter
Convert a Unix timestamp into a readable UTC date and time.
Length Converter
Convert common length units.
Area Converter
Convert common area units.
Volume Converter
Convert liters, gallons, milliliters, cups and cubic meters.
Weight Converter
Convert kilograms, grams, pounds and ounces.
Speed Converter
Convert speed between km/h, mph, m/s and knots.
Pressure Converter
Convert pressure between pascals, bar, psi, atm and kPa.
Energy Converter
Convert joules, calories, kilojoules, watt-hours and kilowatt-hours.
Power Converter
Convert watts, kilowatts, horsepower and BTU per hour.
Data Storage Converter
Convert bytes, KB, MB, GB and TB using decimal units.
Frequency Converter
Convert hertz, kilohertz, megahertz and gigahertz.
Markup Calculator
Calculate markup amount, selling price and markup percentage from cost.
Profit Calculator
Calculate gross profit and profit percentage from cost and revenue.
Price After Tax Calculator
Calculate a tax-inclusive price from a base price and tax rate.
Discount Savings Calculator
Compare original and sale prices to calculate savings and discount percentage.
Markup from Margin Calculator
Convert a target profit margin into the equivalent markup percentage.
Meeting Cost Calculator
Estimate the cost of a meeting from attendee count, hourly pay and duration.
Commission Split Calculator
Split a commission amount between multiple people by percentage shares.
Savings Goal Calculator
Estimate monthly savings needed to reach a savings goal.
Cost Per Unit Calculator
Calculate unit cost from total cost and quantity.
Free Online Age Calculator
Free online Age Calculator by Caluler. Calculate your exact age in years, months, weeks, days, hours and minutes instantly. Fast, accurate and mobile friendly.
BMI Calculator
Calculate body mass index using your height and weight.
BMR Calculator
Estimate your basal metabolic rate and daily calorie needs.
Calorie Calculator
Estimate maintenance calories based on BMR and activity level.
Case Converter
Convert text into uppercase, lowercase or title case.
CGPA Calculator
Calculate updated CGPA after a semester.
Character Counter
Count total characters and characters without spaces.
Currency Converter
Convert currencies using your own exchange rate.
Date Calculator
Calculate days between two dates.
Discount Calculator
Calculate discount amount and final sale price.
EMI Calculator
Calculate monthly EMI for loans using amount, rate and tenure.
GPA Calculator
Calculate GPA from grades and credit hours.
Loan Calculator
Estimate monthly loan payment, total payment and interest.
Percentage Calculator
Calculate what percentage one number is of another.
Profit Margin Calculator
Calculate profit, margin and markup percentage.
Sleep Calculator
Find the best bedtime based on 90-minute sleep cycles.
Time Calculator
Calculate time difference between two times.
Tip Calculator
Calculate tip, total bill and split amount per person.
Unit Converter
Convert weight, distance, length and temperature units.
Word Counter
Count words, characters and characters without spaces.
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