Calculator Tools

Calculator Tools

15 free calculators — EMI, GST, SIP, BMI, CGPA, calorie, body fat, unit converter and more. Instant results.

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EMI Calculator
GST Calculator
SIP Calculator
BMI Calculator
Percentage Calculator
Discount Calculator
Compound Interest
Age Calculator
CGPA Calculator
Ideal Weight Calculator
Date Difference
Calorie Calculator
Unit Converter
Body Fat Calculator
Simple Interest Calculator
15 Free Calculators Instant Results No Signup

CodBolt's free calculator tools give you instant, accurate answers for everyday finance, health, and education calculations. Calculate your home loan EMI, check GST on any amount, plan your SIP investments, track your BMI, find your ideal weight or daily calorie needs, convert your CGPA to percentage, count days between two dates, or quickly find discounts and percentages. All calculators use standard formulas — same as banks, universities, and trusted health references — with no ads, no signup, and no limits.

Frequently Asked Questions

Yes. CodBolt's EMI calculator uses the same standard formula used by banks — Principal × Monthly Rate × (1+Rate)^Months / ((1+Rate)^Months - 1). Results match SBI, HDFC, and other bank calculators exactly.
Enter the base amount and GST rate (5%, 12%, 18%, or 28%). The tool instantly calculates the GST amount and total price. You can also reverse-calculate to find the pre-GST price from an inclusive amount.
SIP (Systematic Investment Plan) calculator shows how much wealth you can build by investing a fixed amount monthly. It uses compound interest formula with monthly compounding to estimate future value.
Yes, all calculator tools on CodBolt are completely free — no account, no subscription, no ads. Just enter values and get instant results.