All calculators
Every AlarmDaddy tool, organised by category. 51 free calculators and counting — accurate, instant, and private.
US Money & Finance
View category →Estimate your monthly mortgage payment including principal, interest, property tax and home insurance.
Add or remove US sales tax at any state and local rate.
Estimate your US take-home pay after federal tax, state tax, Social Security and Medicare.
Project your 401(k) retirement balance including employer match and compound growth.
Calculate your grade point average on the standard US 4.0 scale.
See how inflation erodes purchasing power over time.
Calculate return on investment and annualized ROI for any investment.
Loans & EMI
View category →Work out your monthly home loan EMI, total interest, and full amortization schedule in seconds.
Plan your car loan EMI, total interest, and pick the tenure that fits your budget.
See your personal loan EMI, total cost, and how aggressive prepayment shrinks your interest bill.
Two-wheeler loan EMI calculator for new bikes, scooters, and EVs.
Plan your education loan EMI for studies in India or abroad, including the moratorium period.
Check the maximum loan amount you can get based on your income and existing EMIs.
See how much interest a one-time or regular prepayment saves you over the life of the loan.
Plan your loan-against-property EMI with rates and tenure typical for Indian banks.
Find out the true cost when you convert a big credit card purchase into EMI.
Investments
View category →Project the future value of your monthly mutual fund SIP and see the power of compounding.
See what a one-time investment grows to with annual compounding.
Calculate fixed deposit maturity value and interest with quarterly compounding.
Calculate recurring deposit maturity for a fixed monthly deposit.
Project your Public Provident Fund balance over the 15-year lock-in with annual compounding.
Estimate your National Pension System corpus and monthly pension at retirement.
Find the monthly SIP needed to reach a financial goal, adjusted for inflation.
Calculate compound interest with any compounding frequency — yearly, half-yearly, quarterly, monthly.
Calculate simple interest and total amount for loans and deposits.
Tax & Salary
View category →Compare your income tax under the old and new regimes for FY 2025-26 and pick the cheaper one.
Add or remove GST at 5%, 12%, 18% or 28% and see the CGST/SGST split instantly.
Convert your CTC into actual monthly take-home pay after PF, tax and deductions.
Calculate your tax-exempt House Rent Allowance under Section 10(13A).
Calculate the gratuity payable after 5+ years of service under the Payment of Gratuity Act.
Health
View category →Check your Body Mass Index and see where you fall on the WHO and Asian-Indian scales.
Find your daily calorie needs (BMR and TDEE) for maintaining, losing, or gaining weight.
Estimate your body fat percentage using the US Navy method.
Find your ideal body weight range from height using established medical formulas.
Estimate your delivery date and current pregnancy week from your last period.
Find your most fertile days and ovulation window from your cycle.
Date & Time
View category →Calculate your exact age in years, months, days — and even hours — from your date of birth.
Count the exact days, weeks, and months between any two dates.
Add or subtract days, weeks, months or years from any date.
Count business days between two dates, excluding weekends and holidays.
Everyday Math
View category →Solve every percentage question — of, increase, decrease, and what-percent-of.
Find the sale price and money saved on any discount, including double discounts.
Calculate the tip and split the bill across any number of people.
Estimate the fuel cost of any trip from distance, mileage, and fuel price.
Convert length, weight, temperature, area and volume between common units.
Developer & Text
View category →Percent-encode or decode URLs and query strings instantly in your browser.
Encode text to Base64 or decode Base64 back to text, UTF-8 safe.
Beautify, minify and validate JSON instantly in your browser.
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text.
Convert JSON to PHP serialized format and back.
Convert between Unix timestamps and human-readable dates (strtotime style).