All calculators
Browse public calculators grouped by category and sorted alphabetically.
NexoraCalculator organizes free online calculators into practical categories so you can quickly find the right tool for finance, tax, health, math, conversions, date and time, and everyday planning.
Calculator results are estimates based on the inputs and assumptions you provide. For high-impact financial, tax, medical, legal, payroll, academic, or official-rule decisions, verify results with a qualified professional or relevant official source.
Financial Calculators
Estimate budgets, loans, interest, savings, and other money decisions with clear inputs.
Amortization Calculator
Estimate fixed-rate loan payments and view a monthly amortization schedule.
Compound Interest Calculator
Estimate compound growth from a starting amount, monthly contributions, assumed rate, time period, and compounding frequency.
Hourly to Salary Calculator
Convert hourly rate to weekly, monthly, and annual salary estimates.
Income Tax Calculator
Estimate income tax and after-tax income with a simplified user-entered rate.
Investment Calculator
Estimate possible investment growth from an initial amount, recurring contributions, assumed annual return, and time period.
Loan Calculator
Estimate fixed-rate loan repayments, total repaid, and interest based on principal, annual rate, and term.
Mortgage Calculator
Estimate mortgage payments based on your inputs, with optional recurring tax, insurance, and HOA/service-charge assumptions.
Retirement Calculator
Estimate a simplified retirement savings projection based on your inputs for contributions and expected returns.
Salary Take-Home Estimate Calculator
Estimate take-home pay from gross salary using the effective rate you enter.
Salary to Hourly Calculator
Convert annual salary to an hourly rate using hours per week and weeks per year.
Sales Tax Calculator
Calculate sales tax for purchases in the USA.
Savings Calculator
Estimate savings growth based on your starting amount, monthly deposits, interest-rate assumption, and time period.
VAT Calculator
Estimate VAT by adding or removing the user-entered VAT rate.
Health Calculators
Estimate common body, fitness, and wellness measurements from your personal inputs.
BMI Calculator
Calculate your Body Mass Index using metric or imperial units and see the weight category.
BMR Calculator
Estimate Basal Metabolic Rate (BMR) using the Mifflin–St Jeor equation.
Body Fat Calculator
Estimate body fat percentage from tape measurements using the US Navy method; not a medical diagnosis.
Calorie Calculator
Estimate daily calorie needs and simple targets from BMR, activity, and your entered details.
Ideal Weight Calculator
Estimate a formula-based ideal weight reference range; not a personal medical target.
Ovulation Calculator
Estimate a likely ovulation date and fertile window from the last period start date and average cycle length; general guide only.
Pregnancy Calculator
Estimate a due date, current pregnancy week, and trimester based on the last menstrual period (LMP); general guide only.
TDEE Calculator
Estimate Total Daily Energy Expenditure (TDEE) from BMR and a rough activity multiplier.
Math Calculators
Solve percentages, fractions, ratios, algebra basics, geometry, and other everyday math tasks.
Fraction Calculator
Add, subtract, multiply, or divide fractions and see simplified and decimal results.
GPA Calculator
Estimate GPA from entered credits and letter grades using a simple 4.0 scale.
Grade Calculator
Estimate the final exam grade required to reach a desired overall grade based on entered weights.
Percentage Calculator
Calculate a percentage-based value from your inputs for discounts, increases, rates, marks, and everyday maths estimates.
Scientific Calculator
Evaluate expressions with parentheses, powers, square root, trig, logs, and π.
Standard Deviation Calculator
Calculate mean, variance, and standard deviation for a list of numbers.
Date and Time Calculators
Calculate ages, durations, dates, time intervals, weekdays, and planning timelines.
Age Calculator
Work out your age or someone else's age in years, months, days, and totals.
Date Calculator
Calculate a resulting date by adding or subtracting days, weeks, months, or years from a selected start date.
Time Duration Calculator
Calculate a general duration between entered start and end date-times.
Conversion Calculators
Convert common units and measurements such as length, weight, temperature, area, volume, and speed.
Miles and Kilometers Converter
Convert miles to kilometers or kilometers to miles using the standard conversion factor.
Pounds and Kilograms Converter
Convert pounds to kilograms or kilograms to pounds using the standard conversion factor.
Unit Converter
Convert between supported length, weight, and temperature units using fixed factors for everyday use.
Daily Life Calculators
Estimate tips, splits, discounts, time planning, and other common everyday decisions.