Calculation & Conversion Tools
Calculation reference and tools: percentages, discounts, growth rates, compound interest, mean, median and standard deviation with their common edge cases.
计算与换算速查表 (Calculation & Conversion) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.
Related Tools
- %Percentage CalculatorCalculate percentages, increase or decrease, ratios and change between values with multiple modes for everyday maths and financial quick checks. Five results.
- 🧮Math EvaluatorEvaluate math expressions safely without eval, supporting functions, operators and parentheses for quick calculations and formula prototyping as you type.
- 📊Stats CalculatorCompute count, sum, mean, median, mode, min, max, range, variance and standard deviation from a list of numbers for data analysis, reports and stats homework.
- 💰Compound Interest CalculatorCalculate compound interest with regular monthly contributions, adjustable compounding frequency and final amount, total principal and effective return rate.
- 📏Unit ConverterConvert length, weight, area, volume, speed and data storage units across metric and imperial systems with instant bidirectional swap for any everyday task.
- 🌡️Temperature ConverterConvert between Celsius, Fahrenheit, Kelvin and Rankine with decimal precision, showing the formula so you can check science, cooking and weather data.