# AlarmDaddy > Free online calculators for the US and India — money, health, dates and developer tools. All calculations run client-side; nothing is stored. Site: https://www.alarmdaddy.com ## US Money & Finance - [Mortgage Calculator](https://www.alarmdaddy.com/calculators/mortgage-calculator): Estimate your monthly mortgage payment including principal, interest, property tax and home insurance. - [Sales Tax Calculator](https://www.alarmdaddy.com/calculators/sales-tax-calculator): Add or remove US sales tax at any state and local rate. - [Paycheck Calculator](https://www.alarmdaddy.com/calculators/paycheck-calculator): Estimate your US take-home pay after federal tax, state tax, Social Security and Medicare. - [401(k) Calculator](https://www.alarmdaddy.com/calculators/401k-calculator): Project your 401(k) retirement balance including employer match and compound growth. - [GPA Calculator](https://www.alarmdaddy.com/calculators/gpa-calculator): Calculate your grade point average on the standard US 4.0 scale. - [Inflation Calculator](https://www.alarmdaddy.com/calculators/inflation-calculator): See how inflation erodes purchasing power over time. - [ROI Calculator](https://www.alarmdaddy.com/calculators/roi-calculator): Calculate return on investment and annualized ROI for any investment. ## Loans & EMI - [Home Loan EMI Calculator](https://www.alarmdaddy.com/calculators/home-loan-emi-calculator): Work out your monthly home loan EMI, total interest, and full amortization schedule in seconds. - [Car Loan EMI Calculator](https://www.alarmdaddy.com/calculators/car-loan-emi-calculator): Plan your car loan EMI, total interest, and pick the tenure that fits your budget. - [Personal Loan EMI Calculator](https://www.alarmdaddy.com/calculators/personal-loan-emi-calculator): See your personal loan EMI, total cost, and how aggressive prepayment shrinks your interest bill. - [Bike Loan EMI Calculator](https://www.alarmdaddy.com/calculators/bike-loan-emi-calculator): Two-wheeler loan EMI calculator for new bikes, scooters, and EVs. - [Education Loan EMI Calculator](https://www.alarmdaddy.com/calculators/education-loan-emi-calculator): Plan your education loan EMI for studies in India or abroad, including the moratorium period. - [Loan Eligibility Calculator](https://www.alarmdaddy.com/calculators/loan-eligibility-calculator): Check the maximum loan amount you can get based on your income and existing EMIs. - [Home Loan Prepayment Calculator](https://www.alarmdaddy.com/calculators/home-loan-prepayment-calculator): See how much interest a one-time or regular prepayment saves you over the life of the loan. - [Loan Against Property EMI Calculator](https://www.alarmdaddy.com/calculators/loan-against-property-emi-calculator): Plan your loan-against-property EMI with rates and tenure typical for Indian banks. - [Credit Card EMI Calculator](https://www.alarmdaddy.com/calculators/credit-card-emi-calculator): Find out the true cost when you convert a big credit card purchase into EMI. ## Investments - [SIP Calculator](https://www.alarmdaddy.com/calculators/sip-calculator): Project the future value of your monthly mutual fund SIP and see the power of compounding. - [Lumpsum Investment Calculator](https://www.alarmdaddy.com/calculators/lumpsum-calculator): See what a one-time investment grows to with annual compounding. - [FD Calculator](https://www.alarmdaddy.com/calculators/fd-calculator): Calculate fixed deposit maturity value and interest with quarterly compounding. - [RD Calculator](https://www.alarmdaddy.com/calculators/rd-calculator): Calculate recurring deposit maturity for a fixed monthly deposit. - [PPF Calculator](https://www.alarmdaddy.com/calculators/ppf-calculator): Project your Public Provident Fund balance over the 15-year lock-in with annual compounding. - [NPS Calculator](https://www.alarmdaddy.com/calculators/nps-calculator): Estimate your National Pension System corpus and monthly pension at retirement. - [Goal Planner Calculator](https://www.alarmdaddy.com/calculators/goal-planner-calculator): Find the monthly SIP needed to reach a financial goal, adjusted for inflation. - [Compound Interest Calculator](https://www.alarmdaddy.com/calculators/compound-interest-calculator): Calculate compound interest with any compounding frequency — yearly, half-yearly, quarterly, monthly. - [Simple Interest Calculator](https://www.alarmdaddy.com/calculators/simple-interest-calculator): Calculate simple interest and total amount for loans and deposits. ## Tax & Salary - [Income Tax Calculator](https://www.alarmdaddy.com/calculators/income-tax-calculator): Compare your income tax under the old and new regimes for FY 2025-26 and pick the cheaper one. - [GST Calculator](https://www.alarmdaddy.com/calculators/gst-calculator): Add or remove GST at 5%, 12%, 18% or 28% and see the CGST/SGST split instantly. - [Salary In-Hand Calculator](https://www.alarmdaddy.com/calculators/salary-in-hand-calculator): Convert your CTC into actual monthly take-home pay after PF, tax and deductions. - [HRA Exemption Calculator](https://www.alarmdaddy.com/calculators/hra-exemption-calculator): Calculate your tax-exempt House Rent Allowance under Section 10(13A). - [Gratuity Calculator](https://www.alarmdaddy.com/calculators/gratuity-calculator): Calculate the gratuity payable after 5+ years of service under the Payment of Gratuity Act. ## Health - [BMI Calculator](https://www.alarmdaddy.com/calculators/bmi-calculator): Check your Body Mass Index and see where you fall on the WHO and Asian-Indian scales. - [Calorie Calculator](https://www.alarmdaddy.com/calculators/calorie-calculator): Find your daily calorie needs (BMR and TDEE) for maintaining, losing, or gaining weight. - [Body Fat Calculator](https://www.alarmdaddy.com/calculators/body-fat-calculator): Estimate your body fat percentage using the US Navy method. - [Ideal Weight Calculator](https://www.alarmdaddy.com/calculators/ideal-weight-calculator): Find your ideal body weight range from height using established medical formulas. - [Pregnancy Due Date Calculator](https://www.alarmdaddy.com/calculators/pregnancy-due-date-calculator): Estimate your delivery date and current pregnancy week from your last period. - [Ovulation Calculator](https://www.alarmdaddy.com/calculators/ovulation-calculator): Find your most fertile days and ovulation window from your cycle. ## Date & Time - [Age Calculator](https://www.alarmdaddy.com/calculators/age-calculator): Calculate your exact age in years, months, days — and even hours — from your date of birth. - [Date Difference Calculator](https://www.alarmdaddy.com/calculators/date-difference-calculator): Count the exact days, weeks, and months between any two dates. - [Add or Subtract Days Calculator](https://www.alarmdaddy.com/calculators/add-subtract-days-calculator): Add or subtract days, weeks, months or years from any date. - [Working Days Calculator](https://www.alarmdaddy.com/calculators/workdays-calculator): Count business days between two dates, excluding weekends and holidays. ## Everyday Math - [Percentage Calculator](https://www.alarmdaddy.com/calculators/percentage-calculator): Solve every percentage question — of, increase, decrease, and what-percent-of. - [Discount Calculator](https://www.alarmdaddy.com/calculators/discount-calculator): Find the sale price and money saved on any discount, including double discounts. - [Tip Calculator](https://www.alarmdaddy.com/calculators/tip-calculator): Calculate the tip and split the bill across any number of people. - [Fuel Cost Calculator](https://www.alarmdaddy.com/calculators/fuel-cost-calculator): Estimate the fuel cost of any trip from distance, mileage, and fuel price. - [Unit Converter](https://www.alarmdaddy.com/calculators/unit-converter): Convert length, weight, temperature, area and volume between common units. ## Developer & Text - [URL Encoder / Decoder](https://www.alarmdaddy.com/calculators/url-encode-decode): Percent-encode or decode URLs and query strings instantly in your browser. - [Base64 Encoder / Decoder](https://www.alarmdaddy.com/calculators/base64-encode-decode): Encode text to Base64 or decode Base64 back to text, UTF-8 safe. - [JSON Formatter & Validator](https://www.alarmdaddy.com/calculators/json-formatter): Beautify, minify and validate JSON instantly in your browser. - [Hash Generator (MD5, SHA)](https://www.alarmdaddy.com/calculators/hash-generator): Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text. - [PHP Serialize / Unserialize](https://www.alarmdaddy.com/calculators/php-serialize): Convert JSON to PHP serialized format and back. - [Unix Timestamp Converter](https://www.alarmdaddy.com/calculators/timestamp-converter): Convert between Unix timestamps and human-readable dates (strtotime style).