在线计算与核算工具，支持利润、税费、贷款等计算，适用于财务核算与日常记账。 浏览器本地处理、数据不上传、即开即用。A free online collection of Business & Finance tools. All processing runs in your browser, no upload, no registration.
Business maths is rarely complicated — the friction is rebuilding the same formula every time and forgetting a fee along the way. These calculators turn common scenarios into simple forms: enter cost, selling price and platform commission to work back to true profit, or enter a loan amount and rate to see equal-instalment and equal-principal repayment schedules side by side.
Yes. Set the date and amount of an early repayment and it recalculates the remaining term and the total interest saved.
Yes. Commission rate, payment processing fee and shipping cost can each be entered to get net profit and true gross margin.
Rates are entered manually. The tools do not fetch live data, which keeps them usable offline and makes results reproducible.