Category Toolkit

Math & Calculators

Percentage, BMI, loan, date difference, and dozens more calculators.

55 toolsLocal-first processingFree forever

Percentage Calculator

Calculate percentages, percentage of a number, and increases.

yft.ai/percentage-calculator

Calculate exact age in years, months, and days.

yft.ai/age-calculator

Calculate Body Mass Index from height and weight.

yft.ai/bmi-calculator

Calculate tips and split bills between people.

yft.ai/tip-calculator

Loan Calculator

Calculate monthly payments, interest, and amortization.

yft.ai/loan-calculator

Mortgage Calculator

Calculate mortgage payments with taxes and insurance.

yft.ai/mortgage-calculator

Discount Calculator

Calculate sale price after discount percentage.

yft.ai/discount-calculator

Calculate cumulative and semester GPA from grades.

yft.ai/gpa-calculator

Date Difference Calculator

Calculate the number of days between two dates.

yft.ai/date-difference

Aspect Ratio Calculator

Calculate aspect ratios and resize dimensions proportionally.

yft.ai/aspect-ratio-calculator

Compound Interest Calculator

Calculate compound interest with regular contributions.

yft.ai/compound-interest

Simple Interest Calculator

Calculate simple interest on principal amount.

yft.ai/simple-interest

Sales Tax Calculator

Calculate sales tax and total price with tax.

yft.ai/sales-tax-calculator

Profit Margin Calculator

Calculate profit margin, markup, and gross profit.

yft.ai/margin-calculator

Markup Calculator

Calculate selling price from cost and markup percentage.

yft.ai/markup-calculator

Average Calculator

Calculate mean, median, mode, and range of numbers.

yft.ai/average-calculator

Median Calculator

Find the median value from a set of numbers.

yft.ai/median-calculator

Standard Deviation Calculator

Calculate standard deviation and variance of a data set.

yft.ai/standard-deviation

Fraction Calculator

Add, subtract, multiply, and divide fractions.

yft.ai/fraction-calculator

Exponent Calculator

Calculate powers and exponents of any number.

yft.ai/exponent-calculator

Square Root Calculator

Calculate square roots and nth roots of numbers.

yft.ai/square-root-calculator

Logarithm Calculator

Calculate logarithms with any base (log, ln, log2).

yft.ai/logarithm-calculator

Factorial Calculator

Calculate the factorial of a number (n!).

yft.ai/factorial-calculator

Prime Number Checker

Check if a number is prime and find nearby primes.

yft.ai/prime-number-checker

Prime Factorization Calculator

Find all prime factors of a given number.

yft.ai/prime-factorization

GCD & LCM Calculator

Calculate greatest common divisor and least common multiple.

yft.ai/gcd-lcm-calculator

Binary Calculator

Perform arithmetic operations on binary numbers.

yft.ai/binary-calculator

Perform arithmetic operations on hexadecimal numbers.

yft.ai/hex-calculator

Modulo Calculator

Calculate the remainder of division (modulo operation).

yft.ai/modulo-calculator

Pythagorean Theorem Calculator

Calculate hypotenuse or side length using a^2 + b^2 = c^2.

yft.ai/pythagorean-theorem

Quadratic Formula Calculator

Solve quadratic equations ax^2 + bx + c = 0.

yft.ai/quadratic-formula

Circle Calculator

Calculate area, circumference, and diameter from radius.

yft.ai/circle-calculator

Triangle Calculator

Calculate triangle area, perimeter, and angles.

yft.ai/triangle-calculator

Area Calculator

Calculate area of rectangles, triangles, circles, and more.

yft.ai/area-calculator

Volume Calculator

Calculate volume of cubes, spheres, cylinders, and cones.

yft.ai/volume-calculator

Permutation Calculator

Calculate permutations (nPr) for ordered arrangements.

yft.ai/permutation-calculator

Combination Calculator

Calculate combinations (nCr) for unordered selections.

yft.ai/combination-calculator

Probability Calculator

Calculate probability of single and combined events.

yft.ai/probability-calculator

Pace Calculator

Calculate running or walking pace from distance and time.

yft.ai/pace-calculator

Calorie Calculator

Calculate daily calorie needs based on activity level.

yft.ai/calorie-calculator

Body Fat Calculator

Estimate body fat percentage using Navy method.

yft.ai/body-fat-calculator

Ideal Weight Calculator

Calculate ideal body weight based on height and frame.

yft.ai/ideal-weight-calculator

Electricity Cost Calculator

Calculate electricity usage cost from watts and hours.

yft.ai/electricity-cost

Fuel Cost Calculator

Calculate trip fuel cost from distance and fuel efficiency.

yft.ai/fuel-cost-calculator

Number to Words Converter

Convert numbers to written words in English.

yft.ai/number-to-words

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals.

yft.ai/roman-numeral

Scientific Notation Converter

Convert numbers to and from scientific notation.

yft.ai/scientific-notation

Fibonacci Generator

Generate Fibonacci sequence numbers up to any length.

yft.ai/fibonacci-generator

Decimal to Binary Converter

Convert decimal numbers to binary representation.

yft.ai/decimal-to-binary-math

Decimal to Hex Converter

Convert decimal numbers to hexadecimal format.

yft.ai/decimal-to-hex-math

Hex to Decimal Converter

Convert hexadecimal values to decimal numbers.

yft.ai/hex-to-decimal-math

Binary to Decimal Converter

Convert binary numbers to decimal values.

yft.ai/binary-to-decimal-math

Octal to Decimal Converter

Convert octal (base 8) numbers to decimal.

yft.ai/octal-to-decimal-math

Percentage Change Calculator

Calculate percentage increase or decrease between values.

yft.ai/percentage-change

Ratio Calculator

Simplify ratios and solve proportions.

yft.ai/ratio-calculator

About Math & Calculators

Solve everyday and advanced calculations with our math tools and calculators. From percentage and BMI calculators to loan amortization and date difference tools, every calculator provides instant results in your browser. These tools are designed for students, professionals, and anyone who needs quick, reliable mathematical computations.