Author
BetterProduct Editorial Team - Editorial standards and multilingual quality review
Definitions of key terms used in our calculators and guides.
BetterProduct Editorial Team - Editorial standards and multilingual quality review
Definitions are simplified from public reference material and updated when terminology changes.
April 2026
Clarify unfamiliar terms used across calculators, guides, and comparisons.
English public edition reviewed against the same source formulas used in maintenance.
The process of paying off a loan through regular payments that cover both principal and interest, gradually reducing the balance to zero.
🔢 Related CalculatorFinanceThe yearly cost of borrowing money, expressed as a percentage, including interest and fees. Used to compare loan products.
🔢 Related CalculatorFinanceThe actual return on a savings account or investment in one year, accounting for compound interest. Higher APY means more earnings.
🔢 Related CalculatorFinanceThe strategy of dividing investments among different asset categories (stocks, bonds, cash) to balance risk and reward.
🔢 Related CalculatorFinanceA market condition where prices fall 20% or more from recent highs, typically accompanied by widespread pessimism.
FinanceA market condition characterized by rising prices, typically 20% or more from recent lows, driven by investor optimism.
FinanceThe profit earned from selling an asset (stock, real estate) for more than its purchase price. Subject to capital gains tax.
🔢 Related CalculatorFinanceInterest calculated on both the initial principal and the accumulated interest from previous periods, causing exponential growth.
🔢 Related CalculatorFinanceA numerical rating (300-850) representing your creditworthiness, based on payment history, debt levels, and credit history length.
FinanceYour total monthly debt payments divided by gross monthly income. Lenders use this to assess your ability to repay loans.
🔢 Related CalculatorFinanceThe decrease in value of an asset over time due to wear, age, or obsolescence. Important for tax purposes and accounting.
FinanceSpreading investments across different assets, sectors, or geographies to reduce risk. The principle of not putting all eggs in one basket.
🔢 Related CalculatorFinanceA portion of a company profits paid to shareholders, typically quarterly. Dividends provide income in addition to potential price appreciation.
FinanceInvesting a fixed amount at regular intervals regardless of price, reducing the impact of volatility by buying more shares when prices are low.
🔢 Related CalculatorFinanceSavings set aside for unexpected expenses or income loss, typically covering 3-6 months of essential living expenses.
🔢 Related CalculatorFinanceThe value of ownership in an asset after subtracting liabilities. In real estate, it is the home value minus the mortgage balance.
🔢 Related CalculatorFinanceThe annual fee charged by a mutual fund or ETF, expressed as a percentage of assets. Lower ratios mean more of your money stays invested.
FinanceThe most widely used credit scoring model, ranging from 300-850. Scores above 670 are considered good; above 740 is very good.
FinanceTotal income before any deductions, taxes, or withholdings. Used by lenders to qualify borrowers for loans.
🔢 Related CalculatorFinanceA type of mutual fund or ETF that tracks a market index like the S&P 500, offering broad diversification at low cost.
🔢 Related CalculatorFinanceThe rate at which the general level of prices rises over time, reducing purchasing power. Measured by the Consumer Price Index (CPI).
🔢 Related CalculatorFinanceHow quickly and easily an asset can be converted to cash without significantly affecting its price. Cash is the most liquid asset.
FinanceThe total value of everything you own (assets) minus everything you owe (liabilities). A key measure of financial health.
FinanceThe original amount of money borrowed or invested, before interest is added. Loan payments reduce the principal balance over time.
🔢 Related CalculatorFinanceAdjusting your investment portfolio back to its target allocation by buying or selling assets after market movements shift the balance.
🔢 Related CalculatorFinanceA measure of investment profitability: (Gain - Cost) / Cost 100%. Used to compare the efficiency of different investments.
🔢 Related CalculatorFinanceA retirement account funded with after-tax dollars. Qualified withdrawals in retirement are tax-free, making it ideal for younger investors.
🔢 Related CalculatorFinanceInterest calculated only on the principal amount, not on accumulated interest. Formula: I = P r t.
🔢 Related CalculatorFinanceInvestment growth that is not taxed until withdrawal. Traditional 401(k) and IRA accounts grow tax-deferred.
🔢 Related CalculatorFinanceThe income generated by an investment, expressed as a percentage of its cost or current value. Includes dividends and interest.
FinanceThe number of calories your body needs at complete rest to maintain basic functions like breathing and circulation.
🔢 Related CalculatorHealthA screening tool calculated from height and weight (kg/m) used to categorize weight status: underweight, normal, overweight, or obese.
🔢 Related CalculatorHealthConsuming fewer calories than your body burns, resulting in weight loss. A deficit of 500 calories/day leads to about 0.5 kg loss per week.
🔢 Related CalculatorHealthPhysical activity that raises your heart rate and improves heart and lung function. Examples include running, cycling, and swimming.
HealthThe body natural 24-hour internal clock that regulates sleep-wake cycles, hormone release, and other biological processes.
🔢 Related CalculatorHealthA condition where the body loses more fluid than it takes in, impairing physical and cognitive performance. Prevented by adequate water intake.
🔢 Related CalculatorHealthThe age of a pregnancy measured in weeks from the first day of the last menstrual period (LMP), not from conception.
🔢 Related CalculatorHealthThe process of maintaining adequate fluid levels in the body. Proper hydration supports metabolism, temperature regulation, and organ function.
🔢 Related CalculatorHealthThe three main energy-providing nutrients: carbohydrates (4 cal/g), protein (4 cal/g), and fat (9 cal/g). Essential for body function.
🔢 Related CalculatorHealthThe chemical processes by which the body converts food into energy. Metabolic rate determines how many calories you burn at rest.
🔢 Related CalculatorHealthRapid Eye Movement sleep, a stage of deep sleep associated with dreaming and memory consolidation. Occurs in cycles throughout the night.
🔢 Related CalculatorHealthA roughly 90-minute cycle of sleep stages (light, deep, REM) that repeats 4-6 times per night. Waking between cycles reduces grogginess.
🔢 Related CalculatorHealthThe total calories burned in a day, including BMR plus activity. Used to determine calorie intake for weight maintenance, loss, or gain.
🔢 Related CalculatorHealthFat stored around internal organs in the abdominal area. More metabolically dangerous than subcutaneous fat and linked to chronic disease.
🔢 Related CalculatorHealthThe maximum rate of oxygen consumption during exercise, measuring cardiovascular fitness. Higher values indicate better aerobic capacity.
HealthThe distance of a number from zero on a number line, always non-negative. Written as |x|. For example, |-5| = 5 and |5| = 5.
MathThe sum of a set of numbers divided by the count of numbers. The most common type of average. Formula: (x1 + x2 + ... + xn) / n.
🔢 Related CalculatorMathA number indicating how many times a base is multiplied by itself. For example, 2 = 2 2 2 = 8. Also called a power.
🔢 Related CalculatorMathThe product of all positive integers up to a given number. Written as n!. For example, 5! = 5 4 3 2 1 = 120.
🔢 Related CalculatorMathThe inverse of exponentiation. log_b(x) = y means b^y = x. Common logarithms use base 10; natural logarithms use base e (2.718).
🔢 Related CalculatorMathThe middle value in a sorted dataset. For an even number of values, it is the average of the two middle values. Less affected by outliers than the mean.
MathThe value that appears most frequently in a dataset. A dataset can have no mode, one mode, or multiple modes.
MathA ratio expressed as a fraction of 100. Used to compare proportions. Formula: (part / whole) 100.
🔢 Related CalculatorMathIn a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides: a + b = c.
🔢 Related CalculatorMathA measure of how spread out values are from the mean. A low standard deviation means values are clustered close to the mean.
Math