Calculators
23 tools
No matching tools found.
Math
- Prime Factorization CalculatorInstantly factor large integers into their prime factors
- Equation SolverSolve degree 1–4 equations with step-by-step working
- Pulley & Gear Ratio CalculatorSpeed and torque ratios for pulleys and gears, with a diagram
- Resistor Color Code CalculatorResistance, tolerance, and temp coefficient from color bands
- LED Resistor CalculatorCurrent-limiting resistor value, standard value, and color code for LEDs
- Aspect Ratio CalculatorFind the simplest ratio and solve for a missing dimension
Finance
- Loan CalculatorMonthly payment and amortization schedule by repayment type
- VAT CalculatorEnter any of net, tax, or gross and get the other two
- Savings & Deposit Calculator, Compound InterestDeposit and savings payouts plus compound growth
- Korea Salary Take-Home Pay Calculator & Hourly WageKorean take-home pay, hourly wage and freelancer gross-up
- Korea Severance Pay CalculatorKorean severance pay and retirement tax from average wage
Health
- BMI CalculatorGet your BMI, weight category, and ideal weight
- Calorie CalculatorBMR, TDEE, and target calories with a macro split
- Due Date CalculatorDue date and gestational week from your LMP or conception date
- Blood Alcohol CalculatorEstimate blood alcohol concentration and time until sober
- Body Fat CalculatorEstimate body fat percentage by circumference or BMI
Date & Time
- Unix Timestamp ConverterConvert Unix timestamps to dates and back instantly
- ISO 8601 Date ConverterConvert between ISO 8601, Unix timestamps, and local time
- Date Calculator & Business DaysD-Day, date difference, date math and business days
- Age CalculatorCompare international, year, and Korean age from a birth date