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All 37 tools on calctoolkit, organized by category.
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Calculators22
Percentage Calculator
Percent of, percent change, and reverse percentage.
Tip Calculator
Split the bill and calculate tip per person.
Discount Calculator
Find the sale price after any percentage discount.
GST / VAT Calculator
Add or remove tax from any amount instantly.
BMI Calculator
Body Mass Index with metric & US units.
Calorie Calculator
Daily calorie needs based on age, weight, and activity.
Ideal Weight Calculator
Ideal body weight range by height and gender.
Compound Interest
Future value with contributions and compounding.
Loan EMI Calculator
Monthly payment with amortization summary.
Square Root Calculator
Square root, cube root, and nth root of any number.
Fraction Calculator
Add, subtract, multiply, and divide fractions.
Ratio Calculator
Simplify ratios and solve proportions.
Quadratic Formula
Solve ax² + bx + c = 0 and find real and complex roots.
Triangle Calculator
Area, perimeter, and Pythagorean theorem solver.
Circle Calculator
Area, circumference, diameter, and radius from any value.
Statistics Calculator
Mean, median, mode, range, and standard deviation.
GCF & LCM Calculator
Greatest common factor and least common multiple.
Exponent Calculator
Calculate base^exponent and nth roots instantly.
GPA Calculator
Calculate GPA from letter grades and credit hours.
Slope Calculator
Slope, distance, and midpoint between two points.
Factorial Calculator
Calculate n!, permutations nPr, and combinations nCr.
Logarithm Calculator
Calculate log base b, natural log (ln), and log10.
Converters12
Length Converter
Convert meters, km, miles, feet, inches and more.
Weight Converter
Convert kg, lb, oz, grams, and more.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Speed Converter
Convert mph, km/h, m/s, knots and more.
Area Converter
Convert square meters, feet, acres, hectares.
Data Storage Converter
Convert bits, bytes, KB, MB, GB, and TB.
Volume Converter
Convert liters, gallons, cups, fluid ounces, and more.
Time Converter
Convert seconds, minutes, hours, days, weeks, and years.
Pressure Converter
Convert Pa, bar, psi, atm, mmHg, and more.
Energy Converter
Convert joules, calories, kWh, BTU, and more.
Fuel Economy Converter
Convert mpg, L/100km, km/L and more.
Angle Converter
Convert degrees, radians, gradians, and turns.