1. Choose a task
Open a category or search for the exact calculation or conversion you need.
Free tools · No account required
Get everyday calculations and technical tasks done
AnyToolFree brings together practical finance calculators, developer utilities, image-byte converters and browser-based security tools. Each tool is built around a specific task, with instructions and notes to help you understand its output.
Try “EMI”, “JSON”, “GST” or “encryption”.
Explore by category
Start with the type of task you want to complete.
Finance
Estimate loan repayments, deposits, investments and long-term financial goals.
Browse finance tools →Developer
Format JSON, inspect API responses and convert image bytes for development work.
Browse developer tools →Security
Explore browser-based AES and RSA encryption with visible algorithm settings.
Browse security tools →Business
Calculate GST amounts and compare tax-inclusive or tax-exclusive prices.
Browse business tools →Property
Estimate gross and net rental yield using property value, rent and costs.
Browse property tools →Cars
Compare simplified vehicle lease and purchase costs.
Browse cars tools →Learn something useful
Step-by-step tutorials and practical guides
Understand the calculations and technical concepts behind the tools, with worked examples, common mistakes and limitations.
Popular tools
A quick starting point for common calculations and developer tasks.
Finance
EMI Calculator
Calculate monthly EMI, interest and total repayment.
Open tool →Finance
Fixed Deposit (FD) Calculator
Estimate cumulative FD interest and maturity using quarterly compounding and actual deposit dates.
Open tool →Finance
SIP Calculator
Estimate future value of systematic investments.
Open tool →Finance
Retirement Calculator
Estimate retirement corpus, future expenses and the SIP needed.
Open tool →Finance
Financial Freedom Calculator
Calculate your FI number and projected years to financial independence.
Open tool →Salary & Tax
CTC to In-Hand Calculator
Estimate monthly take-home salary from annual CTC.
Open tool →All tools
Browse the complete collection of available calculators and utilities.
Finance
EMI Calculator
Calculate monthly EMI, interest and total repayment.
Open tool →Finance
Fixed Deposit (FD) Calculator
Estimate cumulative FD interest and maturity using quarterly compounding and actual deposit dates.
Open tool →Finance
SIP Calculator
Estimate future value of systematic investments.
Open tool →Finance
Retirement Calculator
Estimate retirement corpus, future expenses and the SIP needed.
Open tool →Finance
Financial Freedom Calculator
Calculate your FI number and projected years to financial independence.
Open tool →Salary & Tax
CTC to In-Hand Calculator
Estimate monthly take-home salary from annual CTC.
Open tool →Cars
Car Lease vs Buy Calculator
Compare the effective cost of leasing versus buying a car.
Open tool →Property
Rental Yield Calculator
Calculate gross and net rental yield.
Open tool →Business
GST Calculator
Calculate inclusive or exclusive GST.
Open tool →Developer
JSON Formatter
Format and validate JSON locally in your browser.
Open tool →Developer
JSON to Table
Convert JSON arrays or objects into searchable tables and export CSV or TSV.
Open tool →Developer
API Request Tester
Send REST API requests and inspect response status, headers, timing and body.
Open tool →Date & Time
Age Calculator
Calculate age in years, months and days.
Open tool →Developer
Image to Bytecode
Convert images to Base64, Data URL, hex, JSON bytes or Uint8Array.
Open tool →Developer
Bytecode to Image
Reconstruct images from Base64, Data URL, hex, JSON bytes or Uint8Array.
Open tool →Security
Text Encryption
Encrypt text with AES-GCM, AES-CBC, AES-CTR or RSA-OAEP.
Open tool →Security
Text Decryption
Decrypt AES and RSA payloads created by the Encryption Lab.
Open tool →2. Enter your inputs
Follow the field labels and tool-specific instructions. Check units, dates and assumptions before calculating.
3. Review the result
Read the explanation and limitations alongside the output. Recheck important decisions with authoritative sources.
How we approach useful tools
Clear calculations
Financial calculators explain key assumptions and present estimates rather than guaranteed outcomes. Rates, taxes, fees and product rules can vary, so compare the inputs with your own documents.
Understandable technical output
Developer utilities describe supported input formats and common errors. The API Request Tester sends requests to the endpoint you enter; the receiving API applies its own security and CORS rules.
Privacy-conscious processing
Many calculators and converters process data in your browser. Read each tool’s privacy note before entering sensitive information, especially when a tool contacts an external service.
Independent verification
Outputs are intended to help with everyday tasks and initial estimates. Verify financial, tax, legal, security and business decisions using the relevant provider or qualified professional.
Frequently asked questions
Are the tools free to use?
The tools listed on AnyToolFree are available without creating an account. Some pages may display advertising to support the service.
Do I need to install software?
No installation is needed for the browser-based tools. Open a tool in a modern browser and follow its instructions.
Are calculator results guaranteed?
No. Results depend on the inputs and assumptions you provide. Actual lender terms, bank conventions, market returns, tax rules and fees may differ.
Is information I enter uploaded?
Processing depends on the tool. Many calculations and conversions happen locally in your browser. The API Request Tester sends the request to the external URL you specify. Check the privacy note on each tool before using sensitive data.