Ox Calculator - Your #1 source for free, fast, and accurate online calculators.

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes with our precise age calculator

Date Calculator

Calculate date differences, add or subtract days, weeks, months, and years from any date

Percentage Calculator

Calculate percentages, percentage increase, decrease, and percentage of a number

Time Calculator

Add, subtract, and convert time in hours, minutes, and seconds

Days Calculator

Calculate days between dates, add or subtract days from a specific date

Hours Calculator

Calculate hours between times, add or subtract hours, and convert time formats

Fraction Calculator

Add, subtract, multiply, divide fractions and convert between fractions and decimals

Grade Calculator

Calculate grades, GPA, weighted grades, and letter grades from percentages

Subnet Calculator

Calculate subnet masks, network addresses, broadcast addresses, and IP ranges

Scientific Calculator

Free online scientific calculator with trigonometric, logarithmic, and advanced math functions

Fuel Cost Calculator

Calculate fuel costs, consumption, and cost per distance for any trip

GPA Calculator

Calculate your Grade Point Average (GPA) with weighted courses using the standard 4.0 scale

Countdown Calculator

Calculate days, hours, minutes, and seconds until any date or event

Ratio Calculator

Solve proportions, simplify ratios, and find equivalent ratios with step-by-step solutions

Standard Deviation Calculator

Calculate standard deviation, variance, mean, median, mode, and range from your data set with steps

Square Footage Calculator

Calculate area for rectangles, circles, triangles, and trapezoids with unit conversions

Square Root Calculator

Calculate square roots, cube roots, and nth roots with step-by-step solutions

BMI Calculator

Calculate your Body Mass Index (BMI) and get personalized health insights with our professional BMI calculator

BMR/TDEE Calculator

Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) with activity-based calorie targets

Water Intake Calculator

Estimate your daily water intake based on body weight, activity level, and climate conditions

Pregnancy Due Date Calculator

Calculate your due date, current pregnancy week, trimester, and important milestones

Body Fat Calculator

Calculate your body fat percentage using the Navy method or BMI-based estimation

Calorie Calculator

Calculate calories in common foods and track your daily calorie intake for weight goals

Sleep Calculator

Calculate optimal bedtime or wake time based on 90-minute sleep cycles for better rest

Ovulation Calculator

Predict your ovulation date, fertile window, and next period based on your menstrual cycle

Ideal Weight Calculator

Calculate your ideal body weight using Devine, Hamwi, Robinson, and Miller formulas with BMI-based range

Mortgage Calculator

Calculate monthly mortgage payments, total interest, and amortization schedules

Loan Calculator

Calculate loan payments, interest rates, and repayment schedules for any loan type

VAT Calculator

Calculate VAT (Value Added Tax), add or remove VAT from prices

Bivariate Statistics Calculator

Comprehensive bivariate statistics calculator for Ox, Oy on Financial analysis, correlation, and regression

Salary Calculator

Calculate net salary, taxes, and take-home pay from gross salary

Compound Interest Calculator

Calculate compound interest, future value of investments, and savings growth

IBAN Calculator

Validate and generate IBAN numbers for international bank transfers

Tax Calculator

Calculate income tax, tax brackets, and tax refunds for different countries

Tip Calculator

Calculate tips, split bills, and find per-person costs for any group size

Discount Calculator

Calculate sale prices, savings amounts, and final costs after discounts and tax

Profit Margin Calculator

Calculate gross profit, profit margin percentage, and markup from cost and revenue

Inflation Calculator

Calculate the impact of inflation on purchasing power and adjust prices over time

Retirement Calculator

Calculate retirement savings goals, monthly contributions needed, and projected retirement income

Salary to Hourly Calculator

Convert between annual salary, monthly pay, and hourly wage with accurate pay rate conversion