⏱️ Japan Hourly Wage Calculator

The Japan Hourly Wage Calculator converts between different pay periods using Japanese labor standards. In Japan, the legal standard work week is 40 hours, typically spread across 5 days of 8 hours each. Monthly working hours are commonly calculated as either 160 hours (20 days x 8 hours), 174 hours (21.75 days x 8 hours), or a company-specific figure.

For part-time workers (arubaito /パートタイム), the hourly wage (jikyuki) is the base unit. Converting to monthly income requires knowing the actual weekly hours. Converting to annual income requires knowing the number of working weeks (typically 50-52, accounting for holidays).

Japan's minimum wage (saitei chingin) varies by prefecture and industry, ranging from 790 yen/hour in some prefectures to 1,072 yen/hour in Tokyo (as of 2024-2025). The national weighted average minimum wage has been rising steadily and is expected to reach 1,055 yen/hour by 2025.

This calculator also handles overtime conversion: under the Labor Standards Act, overtime beyond 8 hours per day or 40 hours per week must be paid at 125% of the regular hourly rate (increasing to 150% for hours beyond 60 per month under the 2018 work style reform).

The conversion formulas use Japan-standard assumptions:

For full-time conversion: Annual = Monthly x 14-16 (including bonuses). For hourly to annual without bonuses: Annual = Hourly x 2,080 (40h x 52 weeks).

Overtime premium: Hours beyond 8/day or 40/week = 125% of regular rate. Hours beyond 60/month or late night (22:00-05:00) = 150%. Statutory holidays = 135%. Small companies with under 51 employees have a transition period until 2028 for the 25% premium.

1. Enter your hourly wage in yen.
2. Set your working hours per day and days per week.
3. Enter weeks worked per year (default 52, adjust for holidays).
4. Optionally enter overtime hours and rate.
5. Click Calculate to see daily, weekly, monthly, and annual equivalents.

What is the current minimum wage in Japan?

As of 2024-2025, the national weighted average minimum wage is approximately 1,004 yen/hour. Tokyo has the highest at 1,072 yen/hour, followed by Kanagawa at 1,071 yen/hour. The lowest are prefectures like Tottori and Shimane at around 790-820 yen/hour. Minimum wages are reviewed and typically raised each October.

How do I calculate monthly salary from hourly wage in Japan?

The standard formula is: Monthly = Hourly x Hours/Week x 52 / 12. For a 40-hour week at 1,200 yen/hour: 1,200 x 40 x 52 / 12 = 208,000 yen/month. Alternatively, use 174 hours/month (the standard monthly hours in many payroll systems): 1,200 x 174 = 208,800 yen/month.

What is the 8050 rule for part-time workers in Japan?

The "8050 rule" (hachi-maru go-maru) refers to the old guideline where part-time workers earning less than 1.03 million yen per year could avoid social insurance. However, this was changed in October 2022 and October 2024. Now, employees working 20+ hours/week at companies with 51+ employees must enroll in social insurance regardless of income level.

Is overtime pay different for small vs large companies in Japan?

Yes. Since April 2019, companies with 51+ employees must pay 125% for daily overtime and 150% for overtime over 60 hours/month. Small companies (under 51 employees) have a transition period and can still apply just 125% for all overtime until March 2028. Late night work (22:00-05:00) is always 125%+25%=150% regardless of company size.

How does commuting allowance affect hourly rate calculation?

Commuting allowance (tsukin teate) is paid separately and is not included in your hourly wage. However, it is part of your total compensation. When comparing job offers, calculate the effective hourly rate including commuting: (Monthly Salary + Commuting) / Monthly Hours.

This tool is for informational purposes only and does not constitute financial advice. Consult a qualified financial professional for advice specific to your situation.

Check your prefecture minimum wage: Japan's minimum wage is set by each prefecture and reviewed annually. Tokyo has the highest (1,072 yen/hour as of 2024), while several prefectures are below 800 yen/hour. Employers must pay at least the prefectural minimum, regardless of the employee's age or experience.

Overtime is mandatory pay: Under Japan's Labor Standards Act Article 37, overtime premium of at least 25% is legally required. Companies cannot waive this through contract terms. If you are not receiving overtime pay, consult a labor standards inspection office (rodo kijun kantokusho).

Part-time vs full-time threshold: Workers under 30 hours/week are typically classified as part-time (hi shain) and may not receive bonuses or full benefits. Over 30 hours with regular schedule often qualifies for shain (full employee) treatment with social insurance enrollment.