Calculation Guides(53)
Step-by-step guides to interest, percentage and inflation calculations. Each guide shows the formula, a worked example and the calculator.
- How to Calculate Body Fat PercentageLearn how body fat percentage is calculated with a tape measure and the U.S. Navy method: the formula, a step-by-step example and the ACE classes.
- Gross vs Net Salary in TürkiyeSee the deductions between gross and net salary in Türkiye month by month under the 2026 rules: social security, unemployment, income tax and stamp duty.
- How KKDF and BSMV Affect a Loan in TürkiyeLearn how KKDF and BSMV are added to the interest of a Turkish loan, how much they raise the installment and total repayment, and which loans are exempt.
- How the Minimum Wage Exemption Works in TürkiyeLearn how Türkiye's minimum wage income tax and stamp duty exemption is worked out on a payslip, its amount month by month and a step-by-step 2026 example.
- How to Calculate a Credit Card Minimum Payment in TürkiyeLearn how the minimum payment of a Turkish credit card is set by its limit at 20% or 40%, what interest the rest costs, and see worked examples.
- How to Calculate a Loan Installment in TürkiyeLearn the loan installment formula Turkish banks use, how KKDF and BSMV are added to the monthly rate and how the term changes it, with a worked example.
- How to Calculate Deposit Interest in TürkiyeLearn how the gross interest, withholding tax and net interest of a Turkish lira time deposit are calculated, with a worked example and a table by term.
- How to Calculate Early Loan Repayment in TürkiyeLearn what you pay to close a Turkish bank loan early: the remaining principal, the legal early repayment fee and the interest saved, step by step.
- How to Calculate Gross Salary from Net in TürkiyeLearn how the gross salary for a target net pay is found in Türkiye, why there is no single reverse formula, and follow a step-by-step 2026 example.
- How to Lower Your Loan Rate in TürkiyeSee what sets the installment and total cost of a Turkish loan: the rate, the term, KKDF and BSMV, and early repayment, each compared with worked numbers.
- Rent Increase vs Annual Inflation in TürkiyeLearn why Türkiye's rent cap, the CPI 12-month average change, differs from annual inflation, with 2025 and 2026 TÜİK data, a monthly table and an example.
- VAT-Inclusive vs VAT-Exclusive Prices in TürkiyeSee the difference between VAT-inclusive and VAT-exclusive prices in Türkiye both ways: 20%, 10% and 1% examples, a table and the 20%-of-gross mistake.
- How Credit Card Interest Is Calculated in TürkiyeLearn how Turkish credit card interest is calculated from the balance left and the monthly contractual rate, the central bank maximums and the minimum.
- How Much Water Should You Drink a Day?Find out how many litres and glasses of water to drink a day from the EFSA adequate intakes, for women, men, pregnancy and breastfeeding, with an example.
- How Rental Income Is Taxed in TürkiyeHow Türkiye taxes rental income, following the GİB guide: the home rent exemption, flat or actual expenses, the income tax tariff and withholding credit.
- How Social Security Premiums Are Calculated in TürkiyeLearn the Turkish SGK premium rates for employees and employers, the earnings floor and ceiling, the Treasury discount and a step-by-step 2026 example.
- How Tax Brackets Work in TürkiyeLearn how Turkish tax brackets apply to income, what the marginal and effective rates mean, and what happens when you move into a higher bracket.
- How to Calculate Age from a Date of BirthLearn how age is calculated in years, months and days from a date of birth, how many days you have lived and how a 29 February birthday is counted.
- How to Calculate and Simplify a Square RootLearn to find a square root and simplify it to a√b: the formula, a worked √180 example, a table of common roots and the mistakes to avoid.
- How to Calculate BMI (Body Mass Index)Learn how BMI is calculated from weight and height, what the WHO adult categories mean and how to find the healthy weight range for your height.
- How to Calculate Employer Cost in TürkiyeLearn how the total cost of an employee in Türkiye follows from the gross salary, employer SGK and unemployment premiums, with 2026 rates and an example.
- How to Calculate Income Tax in TürkiyeLearn how Turkish income tax is calculated with the 2026 brackets: the formula, a step-by-step example for 1,000,000 TRY and a table of tax by income.
- How to Calculate InflationLearn how inflation changes the future cost and the purchasing power of an amount, with the compound formula, a worked example and a table by years.
- How to Calculate InterestLearn to calculate interest with the simple and compound formulas: the final amount from principal, rate and term, monthly rates and a worked example.
- How to Calculate Investment ReturnLearn how to calculate the total return and the annualized return (CAGR) of an investment, with the formula, a worked example and a table by period.
- How to Calculate Net Salary in TürkiyeLearn how Turkish net salary follows from the gross: social security, unemployment premium, income tax and stamp duty, with 2026 figures and an example.
- How to Calculate Notice Pay in TürkiyeLearn how the Turkish notice period follows from service, how gross notice pay is found and how income tax and stamp duty come off, with a 2026 example.
- How to Calculate Overtime Pay in TürkiyeLearn the Turkish overtime pay formula: the hourly wage as the monthly gross over 225, the 50% and 25% premiums and the 270-hour yearly limit.
- How to Calculate Percentage Change: Increase and DecreaseLearn to calculate the percentage increase or decrease between two values: the formula, a worked example and the difference from percentage points.
- How to Calculate Real Estate Commission in TürkiyeLearn how a Turkish agent's commission is worked out: capped at 4% of a sale or one month's rent, plus 20% VAT, with the amount per party and examples.
- How to Calculate Real ReturnLearn how to calculate real return with the Fisher formula, how to take inflation from Turkish CPI data, and why subtracting inflation overstates it.
- How to Calculate Rent Increase in TürkiyeLearn how the legal rent increase in Türkiye is calculated from the CPI 12-month average: which month applies, 2026 examples and the old 25% cap.
- How to Calculate Severance Pay in TürkiyeLearn the Turkish severance pay formula, how service is counted, the 2026 ceiling and the stamp duty, with a step-by-step example and the net amount.
- How to Calculate Simple InterestLearn the simple interest formula, how to turn a monthly rate into a yearly one and how terms in days, months and years work, with an example and a table.
- How to Calculate Stamp Duty in TürkiyeLearn how Turkish stamp duty is calculated with the per mille rate and the cap per document, with 2026 examples for a contract and a lease contract.
- How to Calculate the Title Deed Fee in TürkiyeLearn how the Turkish title deed fee is charged: 2% of the declared price from the buyer and 2% from the seller, with the formula and a worked example.
- How to Calculate VAT in TürkiyeLearn how to add Turkish VAT to a net amount and take it out of a gross amount, with the 20%, 10% and 1% rates, a worked example and a common mistake.
- How to Calculate Withholding Tax in TürkiyeLearn how Turkish withholding tax (stopaj) is taken from a gross payment and how to gross up a net amount, with 20% examples for rent and freelance fees.
- How to Calculate Your Daily Calorie NeedsLearn how daily calorie needs are estimated with the Mifflin–St Jeor equation and an activity factor, with a worked example and an activity table.
- How to Calculate Your Ideal WeightLearn how ideal weight follows from height and sex by the Devine, Robinson, Miller and Hamwi formulas, and how it differs from the healthy weight range.
- How to Convert Length UnitsLearn to convert inches, feet, yards, miles and nautical miles to centimeters, meters and kilometers with exact factors and a step-by-step example.
- How to Convert Temperature UnitsLearn to convert Celsius to Fahrenheit, Fahrenheit to Celsius and both to Kelvin with the formulas, a worked example and a table of common temperatures.
- How to Convert Weight UnitsLearn to convert kilograms to pounds, ounces to grams and stones to kilograms with the exact factors, a step-by-step example and a table of conversions.
- How to Count the Days Between Two DatesLearn how to count the days between two dates, when to include the end date, and how business days and years, months and days are worked out.
- How to Count the Days Until a DateLearn how to count the days left until a date, why the target day itself is not counted and how to find the days since a date that has passed.
- How to Simplify a Fraction: Step by StepLearn to reduce a fraction to lowest terms with the greatest common divisor: the formula, a 48/60 example, mixed numbers and common mistakes.
- How to Solve a Proportion: Direct and InverseLearn to find the unknown x in a : b = c : x for a direct or an inverse proportion, with the formula, cross multiplication and worked examples.
- Simple vs Compound InterestSee the difference between simple and compound interest with the same principal, rate and term: both formulas, a worked example and a table up to 10 years.
- Stamp Duty on a Lease in TürkiyeTurkish stamp duty on a lease is 1.89 per mille of the total rent. See 2026 examples, the exemption for homes and the rules on copies and extensions.
- Title Deed Costs in TürkiyeLearn the Turkish title deed fee on a property sale, the buyer's and seller's shares, the property tax value rule and the other costs, with 2026 examples.
- Who Gets Severance Pay in Türkiye?Learn who is entitled to severance pay in Türkiye under Law 1475 art. 14: dismissal, resignation for just cause, retirement, military service and marriage.
- How to Calculate Compound InterestLearn the compound interest formula, the effect of compounding frequency and the effective rate with a step-by-step example and a comparison table.
- How to Calculate PercentagesLearn to calculate a percentage of a number, a percentage increase and a discount with the formula, and see how percent differs from percentage points.