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A complete collection of utility toolsMake small things easier.
From mortgage calculation to image processing, from life query to network detection.
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Your daily tool library178Tools
9 clear classificationFree use
Loans and Finance18
Mortgage, car loan, installment, savings and daily consumption calculation.
mortgage calculator
Calculate the monthly payment of commercial, provident fund and portfolio loans, compare the equal principal and interest and equal principal, and download the complete repayment plan.Mortgage Early Repayment Calculator
Comparing the monthly payment or shortening the time limit after repaying the loan in advance, and calculate the impact of savings on interest and expenses.car loan calculator
Calculate monthly payment, interest and total expenditure of car according to car price, down payment and annual interest rate.Actual annualized cost
Convert the monthly repayment and pre-handling fee to the actual annualized cost.Buying a Budget Calculator
Housing price budgets are calculated on the down payment, income, liabilities and acceptable monthly payments.Deposit Interest and Compound Interest
Calculate the balance and income of the principal and monthly additional deposits at the specified interest rate.savings target calculator
The monthly deposit amount is inverted according to the target amount, existing deposit, maturity and interest rate.AA account calculator
Record multi-person advance payment and project participants, and generate a settlement transfer list.Comparison of product unit price and discount
Compare the unit prices after discounts, full discounts and coupons for different specifications of products.RMB capitalization conversion
Convert the digital amount to a financial capitalization in batches, accurate to the point.Profit and gross profit margin calculation
Calculate the corresponding selling price of commodity gross profit, gross profit margin, cost increase rate and target gross profit margin.break-even calculator
The principal-guaranteed sales volume is calculated according to the fixed cost, selling price and unit variable cost.Monthly Budget
Aggregate income and sub-subjects, calculate balances, savings ratios and over-budget items.Self-fill exchange rate conversion
The exchange rate and handling fee are estimated according to the exchange rate and handling fee filled in, and support reverse conversion is supported.Computational growth rate calculation
Calculate the compound annual growth rate according to the beginning, the end of the period values and the number of years, and apply to indicators such as revenue and sales.Line Depreciation Calculator
Generate the annual straight-line depreciation table according to the original value of the asset, the estimated residual value and the use year.Subscription fee summary
Summarize monthly, quarterly and annual payment subscriptions, converting average monthly and annual expenses.Comparison of equipment rental and purchase cost
Compare equipment usage costs based on the number of months of use, purchase price, maintenance fee and rent.Wages and Taxes14
Salary tax, annual sanction, special deduction and tax calculation.
Pre-tax salary calculator
According to the cumulative withholding method, the monthly tax and manual wages for the whole year are calculated.Year-end bonus tax comparison
Compare eligible annual one-time bonuses to be taxed separately and incorporated into comprehensive income.Annual personal tax rebate estimate
Summarize wages, labor services, remuneration and concessional income, and calculate the annual tax refund reference.Special additional deduction trial calculation
Summarize child-child education, infant care, housing, support the elderly, continuing education and medical deduction for serious illness.Calculation of withholding tax on labor remuneration
Calculate the tax withholding tax and amount received for a single resident individual labor service remuneration.Social Security Payment Calculator
Calculate individual and unit payment according to the applicable base, upper and lower limits and the ratio of each insurance type of self-fill in the city.Provident fund deposit calculator
Calculate the monthly payment amount and the total amount of the annual deposit of individuals and units, and support the base limit and rounding method.Conversion of VAT including tax
Convert between tax-included, tax-excluding tax and value-added tax.Estimate of deed tax for buying a house
Estimate deed tax is estimated based on the housing area and the number of family houses.Estimated vehicle purchase tax
According to the taxable price and the year of purchase, the purchase tax of fuel vehicles or new energy vehicles that meets the conditions of the catalog is calculated.Salary and hourly conversion
Convert the daily salary and hourly salary according to the monthly salary, the number of working days per month and the daily working hour.Conversion of entitled wages
Convert the salary according to the self-fill calculation base, the accrued salary days and the actual salary days.Sales commission calculator
Support a unified proportion or progressive commission, and calculate the pre-tax amount of the basic salary plus the commission.Accounting for salary slips
The items that should be issued and deducted in the salary slip are entered, and the actual amount and deduction ratio are checked.Date & Life22
Calendar, date, number segment, region and cost of living query.
Perpetual calendar and lunar calendar conversion
Two-way conversion of the Gregorian lunar calendar, check the arrangements for stems and branches, solar terms, festivals and 2026 holidays.calculator
Calculate the number of days difference between two dates, or query the specified number of days before and after a date.Age and birthday calculation
Calculate the age, month age, birth day and next birthday.world time zone conversion
Change meeting time by source timezone and compare local times for multiple areas.Countdown and Stopwatch
Create multiple countdowns, Pomodoros, or stopwatches that support pauses, continues, and resets.Mobile phone number attribution query
Check the province and city, original operator, area code and zip code of the mobile phone number segment.Area code zip code query
Reverse region information by region name, telephone area code or zip code.License plate abbreviation query
Check the abbreviations of provincial-level license plates in mainland China and the prefixes of cities that have been included.Home Electricity Calculator
Estimate household electricity and electricity charges based on electrical power, usage time and electricity price.Fuel consumption and travel cost
Calculate the fuel consumption of 100 kilometers, the cost of a single kilometer and the fuel cost of the planned itinerary.Date week and week
The date of the week is the day of the week, the day of the year and the number of ISO weeks.Calculation of working days and self-determined rest days
Work days within the statistical date range, self-fill rest days and make-up dates are supported.Duration and conversion
Batch adds hours, minutes and seconds to total hours and total minutes.Recipe usage conversion
Convert the weight of the ingredients in batches according to the original number and the target number.Running speed calculation
It is used to calculate the speed, average speed and the distance target distance from the distance and completion time.Parking fee rules
The parking fee is estimated according to the free time of self-fill, billing unit, unit price and capping every 24 hours.Express volume and weight calculation
Compare the actual weight of the package and the volume weight, and estimate the billing weight.Tile usage and budget
Estimate the number of pieces, number of boxes and brick purchase budget according to the paving area, tile size and loss rate.Date addition and subtraction calculation
Count days, months and years forward or backward from the specified date.Schedule Time Conflict Check
Check the time overlap for multiple schedules on the same day, and count the total usage time.Estimated wall paint usage
Estimate paint purchases based on wall area, door and window area, paint number and coverage rate.Estimate of electricity consumption and cost of home appliances
Estimate power consumption and electricity charges based on equipment power, daily usage time and number of days.office and writing23
Text processing, QR code, bar code and table conversion.
word count
Statistics of Chinese characters, English words, characters, paragraphs, punctuation and expected reading time.Comparison of text differences
Compare two paragraphs of text and highlight new, delete, and retain content.Text de-repeat and sort
De-weight, go blank, sort by line, and display the number before and after.Batch find replacements
Process the text according to multiple sets of rules, preview and copy the replacement result.English letter case conversion
Convert uppercase, lowercase, first letter and first to uppercase of words.Chinese characters to pinyin
Convert Chinese characters to tones, no tones or the first alphabet pinyin, and support polyphonic options.QR code generator
Generate QR codes and download them for text, URLs, or Wi-Fi configurations.QR code identifier
Upload or paste QR code pictures, and extract content locally.barcode generator
Generate Code 128, EAN-13 and Code 39 barcodes, which can be downloaded and printed.EXCEL and CSV conversion
Convert between XLSX, CSV and TSV, preview the worksheet and select the separator.Text line numbers and prefixes
Add continuous numbering, custom prefix and suffix to multiline text.Differences between the two lists
Compare the common items, unique items and de-consolidation results of the two lists.Full-width half-width character conversion
Convert all-width English alphabets, numbers, punctuation and spaces to facilitate the sorting of table text.long text segmentation tool
Split long text by the specified number of characters to generate a numbered segmented list.CSV table row column transposition
Swap the rows and columns of CSV, and support Chinese, quotation marks, line breaks and empty cells.Markdown table generation
Convert CSV tables to Markdown tables, which support left, middle and right alignment.Text privacy desensitization
Cover the mobile phone number, 18-digit ID card format and some characters in the mailbox locally.Paper size and print pixels
Inquire about common A series, B series and Letter paper sizes, and calculate pixels according to DPI.Text number and link extraction
Extract common mobile phone numbers, emails or HTTP links from text locally, and support deduplication.Blank clearing of text
Clear blanks at the beginning and end of the line, continuous spaces and blank lines, and uniform newlines.Markdown title directory generation
Generate hierarchical directory text from Markdown's pound header.CSV column selection and rearrangement
Extract, delete, or rearrange CSV fields by column number, leaving text and leading zeros.CSV two table associations
Press the specified key column to make a left connection or internal connection to the two CSVs, and organize the corresponding data.Pictures, PDFs and files22
Process pictures, PDFs, short audio and files on this machine, preview and download the results.
Batch compression of images
Adjust the quality with the maximum size to compress the picture in batches, compare the volume and download it.Image format conversion
Batch conversion between JPG, PNG, and WebP.Image crop and zoom
Specify the size of the pixels, select the Analytic Scale or Center Crop.Add watermark to images
Add a text or image watermark to the picture, adjust the position, transparency and size.Image coding tool
Frame the area on the preview image and add a solid shade or mosaic.ID photo size and layout
Crop the existing photos into one inch, two inches and other specifications and generate a printed layout.Long picture stitching and puzzles
Splicing multiple pictures in vertical, horizontal, or mesh.Image to PDF
Convert the picture to A4 or the original size PDF of the picture in the specified order.PDF merge and split
Combine multiple PDFs to extract, sort or delete pages by page number range.pdf to pictures
Render the selected PDF page into a PNG or JPG picture.Picture rotation and flip
Rotate the picture 90, 180 or 270 degrees locally, support horizontal and vertical mirroring, download PNG.Picture size and volume viewing
Read the image width and height, number of pixels, aspect ratio and file volume, and download the inspection report.pdf page rotation
Rotate the PDF page according to the page number range, keep the unselected page, and download the new document.View the number and size of PDF pages
View the number of PDF pages, each page size and rotation angle, and download the text report.Picture black and white and reverse color
Convert the picture to a grayscale, black and white binary map or inverse color map, preview and download the PNG locally.pdf add page number
To add a number page number to the PDF page, you can select the starting number and footer position.PDF text extraction
Extract the optional text in the text PDF, organize and download txt by page.Pictures of nine palace grids and blocks
Cut the picture into multiple PNGs in rows, package and download, and support Jiugongge.Image rounded corners and transparent corners
Add custom pixel rounded corners to the picture, and export the png with transparent corners.Audio Cropping with WAV Export
Crop the audio locally in the browser and export the 16-bit PCM WAV.Multi-file zip packaging
Select multiple files locally and type zip to reduce the trouble of transferring one by one.Text file to UTF-8
Read UTF-8, GB18030 or UTF-16 text file and export UTF-8.Learning and Calculation21
Units, mathematics, statistics, grades and learning aids.
scientific calculator
Calculate parentheses, powers, roots, trigonometric functions, and commonly used mathematical expressions.Unit conversion
Convert length, area, volume, mass, temperature and speed.Percentage and proportional calculation
Calculate the proportion, growth rate and allocate values by weight.Geometric area and volume
Calculate the area or volume of rectangles, circles, triangles, cuboids, cylinders and spheres.Data Statistics Calculator
Calculate the mean, median, extreme, population and sample variance and standard deviation.Achievement and grade point calculation
The weighted average score is calculated according to the credits, and the self-fill course performance point or linear rules are supported.Random lottery and grouping
Import the list, randomly extract, group or generate the appearance order.Chinese and English typing speed test
Measure the speed, accuracy rate and record the score using the built-in or custom material.Fractional Calculator
Complete the addition, subtraction, multiplication and division of scores, apportionment and finite decimals conversion.digital hex
Convert positive and negative integers between 2 and 36 hexes.Maximum common divisors and least common multiples
The largest common divisor and minimum common multiple of multiple integers are calculated in batches.Solving the quadratic equation
Solve ax²+bx+c=0, which supports real-numbered roots, complex roots and degraded primary equations.arithmetic arithmetic sequence calculation
Calculate the nth, first n, and various details of the arithmetic or arithmetic sequence.Triangle corner calculation
It is known that the three angles, areas, circumference and inner and outer circle radii of the triangle are found on the three sides.Arrange Combination Calculator
Accurately calculate the number of permutations and combinations selected from n different elements.Integer prime factor decomposition
Decompose positive integers into prime factors to see if it is a prime number and factor product.Binary primary equations solution
Solve the two binary one-time equations, and judge the unique solution, no solution or infinite multi-solution.weighted average calculation
The weighted average is calculated according to the value and weight of each item, and is applicable to the summary of grades and indicators.Matrix Basic Operations
Calculate matrix addition, subtraction, multiplication and transpose, and check whether the dimensions are compatible.Decimal precision rounding
Rounding decimal text according to the specified decimal places, supports rounding, truncation, up and down.Screen PPI and Size Calculation
The pixel density, screen width and dot distance are estimated from the resolution and diagonal dimensions.Webmaster Tools18
Site Response, Certificate, SEO, and crawl rule checks.
HTTP response header query
View public website response status, content type, cache and compressed response headers.https certificate check
View the issuer, validity period, applicable domain name and system trust verification results of the domain name certificate.Website redirect check
Step by step to view the URL jump path, status code and loop jump.robots.txt check
Read the site crawl rules and test whether the crawler can access the target path.Sitemap check
Check the site map xml, statistical addresses, duplicates and a small sample status.Web SEO Basic Check
Check the title, description, H1, Canonical, and Robots information of the public page.Unicode character query
View the code points, UTF-8 bytes, and invisible character descriptions for each character.Regular expression test
Test regular matching, grouping and replacement results, support for timeout termination.cron expression parsing
Preview Cron's future execution time at the specified timezone and explain each field.Bandwidth and download time calculation
Convert Mbps and Mb/s to estimate the time required for downloading files.Web Meta tag generation
Generate a replicable webpage base SEO tag from title, description, and canonical URLs.robots.txt generator
Generate crawler rules according to the Allow and Prohibition paths, and you can attach the sitemap address.Sitemap xml generation
After deduplication, the sitemap xml is generated, which supports local download.Promotion link parameter generation
Add UTM parameters such as source, media, and activity names for URLs and keep other parameters.Text color contrast check
Check the contrast between the text and the background color, and give the WCAG AA and AAA text threshold results.Website Icon Generator
Generate pictures to generate multi-size PNG, ICO and downloadable icons.css gradient code generation
Generate linear gradient CSS based on two colors, transparency and angle.css shadow code generation
Box shadow CSS is generated by offset, blur, diffusion, color and transparency.network query15
IP, proxy, DNS, network segment and domain name information.
ProxyIP batch detection
Batch detect the connectivity, export IP and time-consuming of HTTP, HTTPS Connect and Socks5Proxy.IPv4 interval to CIDR
Break down the starting and ending IPv4 address intervals into the minimum CIDR network segments that are precisely covered.DNS record query
Query A, AAA, CNAME, MX, NS, TXT, CAA, SOA and PTR records.Does ip belong to the network segment
Compare a set of IPv4 addresses with the specified CIDR network segment, and display whether they match one by one.Proxy IP Connection Detection
Support single or batch detection of HTTP, HTTPS Connect, SOCKS5 Proxy connectivity, delay and export IP.MAC address format conversion
Batch the MAC address format to identify unicast, multicast and local management bits.Common subdomain detection
Quickly check common subdomain prefixes and their public DNS resolution results.IP/CIDR Calculator
Calculate IPv4 and IPv6 segments, address range, mask and number of addresses.IP address format translation
Convert IPv4 and IPv6 canonical formats, integers, hex and binary representations.UserAgent parsing
Identify browsers, operating systems, rendering engines, and device types.Public DNS Daquan
View the IPv4, IPv6 and encrypted DNS addresses of commonly used public recursive DNS.Domain name registration information
Query the domain name registration status, registrar, date, dnssec and name server on this site.IPv4 network segment merge and deduplication
Merge multiple overlapping or adjacent IPv4 segments into the minimum CIDR collection with precise coverage.IPv4 subnet division
Divide an IPv4 segment into equal-large subnets according to a longer prefix, list the scope.IPv4 list sorting and verification
Check the IPv4 list offline, sort by value, deduplicate and mark the wrong line.development tool25
Encoding, data format, timestamp and password tools.
json and csv conversion
Convert between the object array JSON and CSV, support Chinese, quotation marks and newline fields.JWT content analysis
View the JWT header, load and standard time fields locally, and do not upload tokens.URL structure and parameter analysis
Disassemble the URL protocol, host, port, path, anchor point and repeated query parameters.HEX and RGB color conversion
Convert the hex color and RGB to calculate the HSL color value and transparency.Common port query
Filter common network ports by port number, protocol or service name.HTTP status code
Quickly find common HTTP status codes and Chinese meanings.json formatting
Format, compress, and verify JSON locally in the browser.base64 codec
Support for base64 encoding and decoding of Chinese text.url codec
Encode and decode the URL component, and the data will not leave the browser.URL structure analysis
Split protocols, hosts, ports, paths, parameters and fragments locally in the browser.text hash calculation
SHA-256, SHA-384 and SHA-512 summary of texts are computed locally in the browser.UUID batch generation
Generate multiple UUID v4 at a time using the browser safe random number.JWT content analysis
Parse the JWT header, payload and validity period locally in the browser, and do not upload tokens.Timestamp Conversion
Convert between Unix seconds, milliseconds and local datetimes.random password generation
Use the browser safe random number to generate strong passwords, and do not upload to generate results.Query interface description
View the current IP, IP attribution, DNS and subdomain interface examples.json path extraction
Press the object key and array subscript to extract the json data, and the output result is for copy and download.JSON generate TypeScript type
Deriving TypeScript types from JSON samples, supports nested objects, arrays, and junction types.Text and UTF-8 hex conversion
Convert text to UTF-8 byte hex, or restore hex to text.file hash validation
Compute the file SHA-256 abstract locally and compare with the expected digest without uploading the file.JSON object deep merge
Combine the two JSON objects recursively by fields, overriding the same name value on the right.JSON structural difference check
Compare the fields and values of the two JSONs, and list the paths that are added, deleted and modified.JSON string escape and restore
Convert the original text to a JSON string literal, or restore escape characters.HTML Entity Escape and Restore
Convert common special characters and numeric character entities in HTML.Linux file permission conversion
Convert the three-digit octal permission and the RWX symbol permission to each other.