所有在线工具

Generate htpasswd files.

Check the formatting of Mexican identity numbers.

Verify HMRC format rules for UK NI Numbers.

Repeat text multiple times.

Calculate tips and split bills.

Verify the Verhoeff checksum of a 12-digit Aadhaar UID.

Verify the structure of a Nigerian Bank Verification Number.

RGB to HEX Converter turns red, green, and blue color values into a HEX color code, and also shows the HSL equivalent and a live color preview. Use the sliders or type exact values to find the perfect color for your website, design, or CSS. It is a fast, free tool for developers and designers that works entirely in your browser.

Estimate your Irish net take-home pay including USC.

Get a rough estimate of the lunar phase (Paksha & Tithi).

Average Calculator instantly finds the mean (average) of any set of numbers, along with the sum, count, median, minimum, and maximum. Just enter your numbers separated by commas, spaces, or new lines. It is perfect for students, teachers, and anyone working with data who needs quick statistics without a spreadsheet. The calculation runs live in your browser.

Compound Interest Calculator shows how an investment or savings balance grows over time with compounding, including optional regular monthly deposits. Enter your principal, interest rate, time period, and compounding frequency to see your final balance, total contributions, and interest earned. It is perfect for planning savings, investments, and retirement goals. It runs instantly in your browser.

Calculate your Body Mass Index.

Calculate your CPF contributions and final take-home pay.

Translate Gregorian dates into official Japanese Imperial Era dates.

Calculate the chargeable dimensional weight for airline cargo.

Dice Roller lets you roll one or many virtual dice with any number of sides — D4, D6, D8, D10, D12, D20, or D100 — and shows each result plus the total. It is perfect for board games, tabletop RPGs like D&D, classrooms, and any time you need dice but do not have them. Rolls are fair and instant, right in your browser.

Convert roman numerals.

Calculate aspect ratios.

Margin Calculator helps you price products and measure profitability by computing profit, profit margin, and markup from a cost and selling price. It is essential for retailers, freelancers, and e-commerce sellers who need to understand their numbers at a glance. Enter your cost and price and the results update instantly in your browser.

Calculate your property tax for England & Northern Ireland.

Easily calculate GST components (CGST, SGST, IGST) for invoicing.

Calculate loan EMIs.

Adjust historical dates for calendar drift.