Small tools. Instant results.
Currency conversion, RMB uppercase amounts, mortgage payments, QR codes, image compression and resize, ChatGPT and Claude App Store prices, and other everyday tools — open a tool and start.
Finance3
Currency converter
Convert USD, CNY, EUR, JPY and more with the day's reference rates.
RMB uppercase
Convert a numeric RMB amount into Chinese uppercase used on invoices and contracts.
Mortgage calculator
Estimate monthly payments, total interest, and a repayment schedule for commercial, housing-fund, or combo loans.
Utility1
Image2
App Store prices4
ChatGPT prices
Compare ChatGPT Plus and Pro reference prices across App Store regions.
Claude prices
Compare Claude Pro and Max reference prices across App Store regions.
Gemini prices
Compare Google AI Pro, Plus, and Ultra reference prices across App Store regions.
Grok prices
Compare SuperGrok and SuperGrok Heavy reference prices across App Store regions.