Free online tools
Simple, fast utilities that run entirely in your browser — nothing is uploaded anywhere.
Finance & Investment
Loans · Investing · Salary · Tax estimates
EMI Calculator
Monthly loan EMI, total interest and total payment.
SIP Calculator
Future value of a monthly SIP investment.
Lumpsum Calculator
Future value of a one-time investment.
CAGR Calculator
Compound annual growth rate between two values.
Compound Interest Calculator
Final amount and interest earned at any compounding frequency.
ROI Calculator
Return on investment, plus annualized ROI.
Discount Calculator
Discount amount and final price.
GST Calculator
Add or remove GST at any rate.
FD Calculator
Fixed deposit maturity value.
RD Calculator
Recurring deposit maturity value.
PPF Calculator
Public Provident Fund maturity value.
Sukanya Samriddhi Calculator
SSY maturity value for a girl child's savings account.
SCSS Calculator
Senior Citizens Savings Scheme quarterly payout.
EPF Calculator
Employee Provident Fund corpus at retirement.
NPS Calculator
National Pension System corpus and annuity split.
XIRR Calculator
Annualized return for irregular cash flows.
Loan Prepayment Calculator
Interest saved from a one-time part-payment.
Income Tax Calculator
Compare old vs new regime tax liability.
TDS Calculator
Estimate monthly TDS deduction from salary.
Gratuity Calculator
Estimate gratuity using the statutory formula (India).
Salary Calculator
Estimate take-home salary from CTC (India).
Cloud & Infrastructure
Cloud · Kubernetes · Networking · Linux · Databases
CIDR / Subnet Calculator
Network address, broadcast, and usable host range from an IP/CIDR.
chmod Calculator
Toggle Linux file permissions to get the numeric and symbolic value.
Cron Expression Explainer
Plain-English explanation of any 5-field cron expression.
Kubernetes Resource Converter
Convert CPU millicores and memory Ki/Mi/Gi units.
Connection String Builder
Generate URIs for Postgres, MySQL, MongoDB and Redis.
Monitoring Directory
Curated list of monitoring tools by category.
Developer Tools
Image Tools
Compress · Resize · Convert · Combine into PDF
PDF Tools
Merge · Edit · Convert to images
AI & Creator Tools
Template-based generators — no AI model or API involved
Utility Tools
QR codes, passwords, random numbers and other everyday utilities
Text Tools
Date & Time Tools
General Calculators
Career Tools
Reliability Tools
SLA Calculator
Allowed downtime for any SLA target.
Uptime Calculator
Actual uptime % from downtime.
Downtime Calculator
Downtime allowance for any SLA and period.
Downtime Cost Calculator
Estimate revenue exposure.
SLO Calculator
Error budget from an SLO target.
Error Budget Calculator
Track remaining error budget.