Calculator Guides

New to MiniToolLab? This guide page explains, category by category, what each calculator does, which values to enter, and how to read the result — so you get the right answer the first time. Every tool is free and needs no signup.

Finance & Salary Guides

Salary tools start from CTC/basic pay and show every deduction openly; savings-scheme tools (Sukanya, SCSS, RD) use the latest notified rates (8.2% for Sukanya and SCSS in Oct–Dec 2026) and let you change the rate; pay-commission tools are labelled estimates until the government notifies final figures; insurance tools (LIC, RPLI, PLI) show estimates, and LIC’s official illustration is final.

• In-Hand Salary Calculator — use it when you want to see your take-home pay after deductions from your CTC or basic pay.
• HRA Calculator — use it when you want to work out your house rent allowance and its tax treatment.
• Sukanya Calculator — use it when you are planning savings for a girl child under the Sukanya Samriddhi scheme.
• SCSS Calculator — use it when you are estimating maturity value under the Senior Citizens Savings Scheme.
• 7th Pay Calculator — use it when you want to check salary under the 7th Pay Commission structure.
• 8th CPC Calculator — use it when you want an estimate of salary under the expected 8th Pay Commission.
• Loan EMI Calculator — use it when you want your monthly loan instalment for a given amount, rate and tenure.
• RD Interest Calculator — use it when you want the maturity value and interest on a recurring deposit.

Health & Fitness Guides

Health tools use standard formulas (Mifflin-St Jeor for BMR/TDEE); enter honest activity levels; screening tools like Visceral Fat give a risk category, not a diagnosis — see a doctor for medical decisions.

• TDEE Calculator — use it when you want your total daily energy expenditure for your activity level.
• BMR Calculator — use it when you want the calories your body burns at rest.
• Macro Calculator — use it when you want a protein, carbohydrate and fat split for your calorie goal.
• Lean Body Mass Calculator — use it when you want to estimate your fat-free body mass.
• Visceral Fat Calculator — use it when you want a risk category for fat around your internal organs.
• Pregnancy Calculator in Tamil — use it when you want pregnancy dates and milestones explained in Tamil.

Education & Exam Guides

CGPA tools multiply credits by grade points — always use YOUR university’s scale (each tool states the scale it uses and the site carries separate tools for VIT, SRM, Saveetha, KL and VTU); exam tools (JEE, GATE, UPSC, CET) apply the official marking/percentile method and are estimates until official keys and normalisation are out.

• CGPA to Marks Calculator — use it when you want to convert a CGPA into marks or a percentage.
• VIT CGPA Calculator — use it when you are a VIT student calculating CGPA on the VIT scale.
• SRM CGPA Calculator — use it when you are an SRM student calculating CGPA on the SRM scale.
• VTU CGPA Calculator — use it when you are a VTU student calculating CGPA on the VTU scale.
• JEE Main Score Calculator — use it when you want to estimate your JEE Main score from your responses.
• GATE Score Calculator — use it when you want to estimate your GATE score from marks and the official method.
• UPSC Age Calculator — use it when you want to check your age eligibility for UPSC exams.
• MHT CET Percentile Calculator — use it when you want to estimate your MHT CET percentile from your score.

Astrology & Numerology Guides

These tools follow the traditional published methods and state them openly; chart-based tools (Darakaraka, Atmakaraka, Shadbala) rank or total the values you enter from your kundli — they do not generate a birth chart.

• Bhagyank Calculator — use it when you want your destiny number from your full date of birth.
• Tarabalam Calculator — use it when you want to check star compatibility from birth stars.
• Darakaraka Calculator — use it when you want to identify the Darakaraka planet from your kundli values.
• Atmakaraka Calculator — use it when you want to identify the Atmakaraka planet from your kundli values.
• Shadbala Calculator — use it when you want to total planetary strengths from the values you enter.
• Mobile Numerology Calculator — use it when you want the numerology value of a mobile number.

Everyday Calculation Guides

Everyday tools (dates, fuel, toll, bills) are planning estimates — official bills and plaza charges are final; check the worked example on each tool to confirm the method matches your case.

• Birth Date Calculator — use it when you want to work out age or dates from a birth date.
• Fuel Calculator — use it when you want fuel cost or consumption for a trip.
• Toll Calculator India — use it when you want an estimate of toll charges for a route in India.
• KSEB Bill Calculator — use it when you want an estimate of a Kerala electricity bill.
• Court Fees Calculator — use it when you want an estimate of court fees for a claim.
• Denomination Calculator — use it when you want to break an amount into notes and coins.

How to Read Any Result on MiniToolLab

1. Check the formula section — it states the exact method and assumptions.
2. Compare the worked example with your own numbers.
3. If a tool says “estimate”, treat official tables (LIC, KSEB, your university, the court) as final.
4. If a rate can change (DA, HRA, interest rates), update the editable field with the latest notified valu

Frequently Asked Questions (FAQs)