New Tools

Produce Price Lookup

Check real-time wholesale produce prices across major agricultural markets in China. Compare daily prices to make smart buying, selling, and grocery shopping decisions.

Tender & Bidding Search

Quickly search public tender notices and contract award results nationwide. Supports multi-dimensional filtering.

Recipe Finder

Enter ingredients or dish names to quickly find matching recipes, step-by-step instructions, and ingredient lists.

Geometric Mean Calculator

Input a set of positive numbers, one-click calculation of geometric mean, commonly used for average growth rate, investment return and other scenarios.

Online JSON to TOML Converter

Quickly convert JSON data to TOML format. A free online tool perfect for migrating configuration files.

Weighted Average Calculator

Quickly calculate the weighted average by entering values and their corresponding weights. Supports unlimited data sets.

Harmonic Mean Calculator

Free online harmonic mean calculator. Easily calculate the harmonic mean of positive numbers for average speed, exchange rates, and financial data.

Average Calculator

Enter a set of numbers to quickly calculate the arithmetic mean, sum, and count.

Prime Factorization Calculator

Enter any positive integer to instantly calculate its prime factorization. Get prime number verification and detailed step-by-step results with this free online calculator.

Fraction Simplifier

Free online fraction simplifier. Enter the numerator and denominator to instantly reduce fractions to their simplest form and see the step-by-step GCD calculation process.

Placeholder Image Generator

Quickly generate custom placeholder images with specific sizes, colors, and text. Perfect for web prototyping, documentation, and frontend development.

Car Insurance Quote Calculator (2026)

Quickly estimate your annual car insurance premiums, including mandatory and commercial coverage. Enter your car's value and claim history for a fast, accurate reference.

Car Purchase Tax Calculator (2026)

Enter the new car's invoice price and instantly calculate 2026 vehicle purchase tax and total landed cost

Consumer Loan Calculator

Enter the loan amount, interest rate, and term to quickly calculate monthly payments and total interest on consumer loans.

国家语言代码对照表

查询各国语言的标准缩写代码，支持中文名称、英文名称搜索，快速获取如 zh-CN、en-US 等代码。

Water Density Calculator

Calculate water density instantly by entering temperature and salinity. Get accurate results in kg/m³ or g/cm³.

Pythagorean Theorem Calculator

Enter any two sides of a right triangle to instantly calculate the length of the third side.

利率转换计算器

快速在年利率、月利率、日利率之间互相换算，支持简单利率和有效年利率两种模式。

Interest Rate Calculator (2026)

Enter your principal, annual interest rate, and term to quickly calculate total interest and total balance using simple or compound interest.

TV Mount Height Calculator

Calculate the recommended TV installation height based on screen size, viewing distance, and seated eye level for comfortable viewing.