9 new tools: withholding tax, age chart, random picker and more

What's new in v1.8.0

Business calculators

• Withholding Tax (Japan) — calculate the 10.21% withholding on fees, including reverse calculation from take-home amount
• Hourly Wage Converter — estimate monthly/annual income from an hourly wage
• Revenue Stamp (Japan) — determine the stamp duty required for a receipt

Everyday utilities

• Age Chart — see ages by birth year, with Japanese eras and zodiac
• Time Calculator — add up HH:MM durations, with decimal output for payroll
• Discount Calculator — price after % off, and reverse discount rate
• Random Picker — fair draws, shuffles and group splits

Developer tools

• IP Subnet Calculator — network info from CIDR notation
• Placeholder Image Generator — download placeholder PNGs in any size

All free, no sign-up required.