Popular Calculators Ranking

We calculate your BMI, which indicates your level of obesity based on your height and weight, as well as your ideal weight.

Calculates the number of days, weeks, and years between two dates. You can calculate how many days have passed since birth.

Generates random integers from the specified range.

Calculates the elapsed time from the start time to the end time.

Calculate part-time wages—including working hours, payroll calculation hours, and daily wages—based on the start and end times of the shift.

Calculate a new date by adding a number of days to the current date. If you enter a negative number of days, the result will be the current date minus that number of days. Example: What is the date X days from today?

We will run simulations for three scenarios—5%, 8%, and 10% consumption tax—applied to amounts excluding or including tax. (Tax-inclusive and tax-exclusive calculations)

We check for childhood obesity based on height and weight.

Skill Multiplier Calculator

Calculates a time that is a certain amount of time after (or before) a specified time.

Calculate your age today/at that time using both calendar age and traditional Japanese age.

Based on overall power, effective stats, and event bonuses, you can calculate the estimated points you can earn from a single round of "Ebi" in a multiplayer room, as well as the points you can earn in My World. Use this tool when you're unsure about your event team composition or when estimating your runner's speed.

This tool estimates your body fat percentage based on your height, weight, gender, and age. It is intended for people 18 years of age and older. Accurate results cannot be obtained for high school students and younger. Since the estimation formula is based on an average body type, it may not apply to people who do not fit this average. (e.g., those who are extremely overweight, extremely underweight, athletes, or those who have been doing proper strength training for a long time) Additionally, if your measurements deviate significantly from the average, the result may be a negative value.

We calculate your child's genetic growth target (Target Height) based on your parents' heights.

Calculate the monthly withholding tax amount for salary income for the 2026 tax year.

Calculate your Total Daily Energy Expenditure (TDEE).

This tool calculates and displays a graph of the total principal and interest, as well as the interest alone, for a fixed-amount savings plan. Taxes are applied after each compound interest calculation.

Calculate the withholding tax (income tax and special income tax for reconstruction) and the total interest amount based on the interest earned on deposits. (Effective January 1, Heisei 28 onward)

Using the equal principal and interest or equal principal repayment methods, calculate a table showing the repayment amount and outstanding balance for each payment based on the loan amount.

We will calculate the quotient and remainder of a division problem.

The annual, monthly, and daily Nine Stars for the specified date will be calculated, and the corresponding Nine Star charts will be displayed.

This tool calculates and displays a graph of the total principal and interest at each interest payment date, using compound interest.

Calculate the employment insurance premiums (employee and employer contributions) based on the total amount of wages and bonuses paid. (October 1, 2022 – March 31, 2027)

This calculates the number of days remaining from today until the selected date.

We will calculate your basal metabolic rate (BMR), which is the amount of energy required to sustain life.

Calculate a baseball batting average.

Calculates the number of days before the selected date. Example: What is the date X days before today?

Calculate the ERA in baseball.

Let's calculate which of two products—with the same contents but different sizes and prices—offers better value per unit.

Calculates the calendar notes (lunar calendar, Rokuyō,干支, Nine Stars, Twelve Directs, Twenty-Eight Mansions, and Twenty-Seven Mansions) for the current calendar date.

Calculates the number of business days between two dates, excluding holidays. Supports major banks, government agencies, and other organizations from 2020 onward.

Calculate a table showing the outstanding balance and the amount of each repayment—including prepayments—for a loan using either the equal principal and interest or equal principal repayment method.

This calculates the depreciation expense applicable to depreciable assets acquired on or after April 1, 2012.

This graph displays your biorhythms (physical, emotional, and intellectual) for approximately one month starting from the reference date.

Calculate the fixed overtime pay when "Total compensation = Wages for scheduled working hours + Fixed overtime pay"

Factors the specified integer into its prime factors.

We calculate the heat index based on temperature and humidity.

Converts UNIX time to a date.

Calculates the lunar calendar based on the current month and year.

Calculates the Nine Stars of the Year and Month (Year-Month Nine Stars) and the Nine Stars of the Hour (Hourly Nine Stars) based on the current date and time.

Calculate the duration of maternity and parental leave.

Calculate the cash on hand when closing the register.

Calculates the values of the other elements based on the two selected input values for a right triangle.

Calculate the calories burned while walking.

Modified Version of "soo_ Microwave Cooking Time Conversion (Approximate)"

Calculate the angle of inclination and the hypotenuse of a right triangle using its base and height.

Calculate the tax included in the price.

We predict your child’s final height based on their environment and your height.

Calculate the drip rate for the IV.

Calculate the OPS (on-base plus slugging) in baseball.

We calculate health insurance premiums, long-term care insurance premiums, child and childcare contributions, and child and childcare support payments, as well as the employee’s share of these costs, based on salary and bonus amounts. (Fiscal Years 2022, 2023, 2024, 2025, and 2026)

Stock calculation. This is the bar stock reference number.

We calculate the FFMI (Fat-Free Mass Index), also known as the "muscle mass index."

Calculates the Chinese zodiac calendar (day, month, and year) based on the current month and year.

Convert the amount of data.

This tool calculates the amount of employment insurance benefits (unemployment benefits) and the number of benefit days. (Effective August 1, Reiwa 8: Change to the daily basic benefit amount under the Employment Insurance Act)

Calculate a table showing the monthly and bonus-time repayment amounts and the outstanding balance for a loan using the equal principal and interest or equal principal repayment methods.

We calculate overtime pay for work performed outside regular hours, on holidays, and at night.

Calculate the monthly withholding tax amounts for salary income for the years 2020, 2021, 2022, 2023, 2024, and 2025.

Please list the dates of the major celebrations since the child was born.

We will calculate the income tax and local taxes on your severance pay.

This tool calculates and displays a graph of the total principal and interest, as well as the interest alone, for a fixed-amount savings plan. Taxes are levied in a lump sum at maturity.

Based on the distance and target time, I will create a pace chart.

Calculates the calories burned through physical activity and exercise.

We calculate your ideal weight and beauty weight based on your height.

Calculates the number of days and hours elapsed between the start date and time and the end date and time.

This tool estimates the amount of income from employment that is eligible for welfare benefits. *Please note that exact amounts may vary by municipality and fiscal year, so these figures are approximate.

We will calculate the area of a triangle using Heron's formula based on its three sides.

We calculate the ratio based on the base quantity and the comparison quantity.

Plot branch sales using a line graph.

Test

Calculates the date and time that is a certain number of days and hours after (or before) the start date and time.

Compare your child's height and weight to the national average. You can check data for ages 1 to 18.

Calculate the Employees' Pension Insurance premiums and the employee's share of those premiums based on the amount of salary and bonuses.

Calculate the total dividends and withholding tax (income tax and Special Income Tax for Reconstruction) based on the dividend payment amount. (January 1, 2014 – December 31, 2007)

We calculate retirement benefits for local government employees.

This function calculates a new date by adding the number of business days to the given date. It supports major banks, government agencies, and other organizations.

Calculate the calories burned while cycling.

Perform addition and subtraction of fractions.

We will simplify fractions. We will also display the greatest common divisor. (Mixed fractions are allowed.)

Calculate the calories burned while running.

Converts a date to UNIX time.

We will calculate the Basic Allowance for Continued Employment of Older Workers, which is paid to individuals under the age of 65 who continue working after retirement if their wages fall below 75% of their wages at age 60.

We'll calculate the hourly wage based on the monthly salary.

Puzzle & Dragons: Calculator for Effective HP Based on Leader Skill HP Multipliers and Damage Reduction Rates

Calculates the Nine Star Calendar (Daily, Monthly, and Annual Nine Stars) based on the current month and year.

We calculate retirement benefits for national civil servants.

Your destiny number is the sum of the digits in your date of birth. You keep adding the digits until you get a single-digit number, but in rare cases, some people end up with a double-digit number (like 33) before reaching a single digit—and apparently, those people are said to have a wonderful destiny (?)

Calculate the withholding tax when paying royalties, speaking fees, and other similar payments.

Average score → Standardized score

Calculate the total payment amount and the withholding tax by working backward from the net amount after withholding.

Calculate the hypotenuse and height of a right triangle using its base and the angle of inclination.

I made this because the calculations were too tedious

We will calculate the number of seats won using the D'Hondt method.

Enter your values to automatically calculate your ideal PFC balance and daily calorie intake. Please use the "Calorie Adjustment" feature to set your target daily calorie intake for weight loss or weight gain. It is said that a +300 kcal surplus can help you build muscle without gaining too much fat. To lose about 1 kg of fat per month, we recommend aiming for a daily deficit of -300 kcal. If you want a low-carb ratio (carbohydrate restriction), increase the "Fat per Body Weight," and if you want a high-carb ratio (fat restriction), decrease the "Fat per Body Weight." Physical Activity Level Index: 1.5: Recommended for those who commute (light exercise, such as walking) and do strength training 2–3 times a week. 1.7: Recommended for those who engage in high-intensity exercise or strength training 5 times a week. 1.9: Recommended for those who engage in military-style high-intensity exercise every day.

Calculation of Lean Body Mass

It calculates the perceived temperature based on humidity and wind speed.

Determines the day of the week based on a date in the Gregorian calendar or the Japanese calendar (from the Meiji era onward).

Converts degrees, minutes, and seconds to degrees.