All Calculators & Tools
Every tool on CalcInfinity in one place — 76 free calculators and utilities, grouped by category.
Everyday Calculators
Open category- Percentage CalculatorCalculate percentages, percentage change, and proportions.
- Grocery CalculatorQuickly calculate grocery, fruit, vegetable, milk, fuel, and everyday shopping costs.
- Discount CalculatorFind the final price after a percentage or flat discount, and see what you save.
- Which Is Cheaper?Compare two products and instantly find the better deal.
- Tip CalculatorCalculate tip amount and split total across any number of people.
- Split Bill CalculatorSplit a bill proportionally or equally — with optional tip — across multiple people.
- Average CalculatorFind mean, median, mode, range, min, and max for any set of numbers.
- Ratio CalculatorSimplify ratios, scale them, or solve proportions instantly.
- Trip Cost CalculatorCalculate exactly how much a trip will cost — petrol, diesel, or electric.
- Gold Price CalculatorCalculate gold value by weight and rate, including making charges and GST.
Date & Time Calculators
Open category- Age CalculatorCalculate exact age in years, months, and days from a date of birth.
- Date Difference CalculatorFind the exact difference between two dates in days, weeks, or months.
- Business Days CalculatorCount business days between two dates, or add or subtract business days from a date, skipping weekends.
- Countdown CalculatorCount down the days, hours, minutes, and seconds until any date and time.
- Time Duration CalculatorFind the duration between two times, or add or subtract a duration from a time.
- Time Zone ConverterConvert a date and time between time zones, with full DST and daylight-saving handling.
Health Calculators
Open category- BMI CalculatorCalculate Body Mass Index and see your healthy weight range.
- Calorie CalculatorCalculate your daily maintenance calories and calorie targets for weight loss or gain.
- BMR CalculatorCalculate your Basal Metabolic Rate using the Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas.
- Water Intake CalculatorCalculate how much water you should drink daily based on your weight and activity level.
- Ideal Weight CalculatorEstimate your ideal body weight from your height and sex, compared across four established formulas.
- Body Fat CalculatorEstimate your body fat percentage and category using the U.S. Navy circumference method.
- Pregnancy Due Date CalculatorEstimate your due date and current trimester from your last period, conception date, or IVF transfer date.
Education Calculators
Open category- GPA / CGPA CalculatorCalculate your credit-weighted GPA (4.0 scale) or CGPA (10-point scale) from unlimited subjects.
- Grade CalculatorCalculate your overall grade from multiple weighted components like quizzes, assignments, and exams.
- Final Grade / Required Score CalculatorCalculate your final grade from your final exam score, or find the score you need to hit a target grade.
- Marks Percentage CalculatorCalculate the percentage of marks obtained out of the total marks in an exam.
- Percentage ↔ CGPA ConverterConvert between percentage and CGPA using the CBSE 9.5 multiplier or your own custom multiplier.
- Attendance CalculatorCalculate your attendance percentage from classes attended and total classes held.
- Required Attendance CalculatorFind how many more classes you need to attend to reach a target attendance percentage.
- SGPA to CGPA CalculatorCalculate your overall CGPA from your semester-wise SGPA and credits.
- Semester Percentage CalculatorCalculate your overall semester percentage from marks obtained and total marks across all your subjects.
Finance Calculators
Open category- EMI CalculatorCalculate monthly loan EMI, total interest, and repayment schedule.
- SIP CalculatorEstimate the future value of your monthly SIP investment.
- Lumpsum CalculatorEstimate the future value of a one-time mutual fund investment.
- FD CalculatorCalculate fixed deposit maturity value and interest earned.
- RD CalculatorCalculate recurring deposit maturity value with bank-standard quarterly compounding.
- PPF CalculatorCalculate PPF maturity value for any annual investment and tenure.
- EPF CalculatorCalculate your EPF maturity value including employer contribution and EPS split.
- Compound Interest CalculatorCalculate compound interest and total value at any compounding frequency.
- Simple Interest CalculatorCalculate simple interest and total amount for any principal, rate, and time period.
- Income Tax CalculatorCompare Old vs New tax regime and find out which one saves you more.
- GST CalculatorAdd or remove GST from an amount at any slab rate.
- Gratuity CalculatorCalculate your gratuity amount under the Payment of Gratuity Act 1972 — for both covered and uncovered organisations, with tax-exempt breakdown.
- Salary CalculatorCalculate your monthly take-home salary from CTC — with EPF, professional tax, and new or old regime income tax deducted.
- HRA CalculatorCalculate your HRA exemption under Section 10(13A) — metro vs non-metro, all three limits shown with the binding one highlighted.
- NPS CalculatorEstimate your NPS corpus, tax-free lump sum, and monthly pension at retirement — with adjustable annuity percentage and rate.
Exam Eligibility
Open category- Exam Application CheckerCheck if you can apply for a government exam — age, eligibility, deadline, and fee in one shot.
- Form Eligibility CheckerCheck age, qualification, gender, and attempt count eligibility against any custom exam configuration.
- Exam Age EligibilityCheck age eligibility for government recruitment exams against a cutoff date or birth date range.
- Age Relaxation CalculatorCalculate your effective maximum age after category-based relaxation for any government exam.
- Exam Attempt CalculatorCheck how many attempts you have left for an exam based on your category and past attempts.
- Application Fee CalculatorFind the applicable application fee for your category — picks the lowest fee you qualify for.
- Form Deadline CalculatorCheck how much time is left before an exam application deadline closes.
- Document Specs CheckerVerify that your photo or document meets file size, format, and dimension requirements.
- RRB Technician Age Limit 2026Check RRB Technician (CEN 02/2026) age eligibility by category, with PwBD and other special-category relaxations.
- RRB Section Controller Age Limit 2026Check RRB Section Controller (CEN 03/2026, graduate-level Pay Level 6 post) age eligibility by category — minimum age is 20, not 18.
Exam Scores & Ranks
Open category- Exam Score CalculatorCalculate your exam score with custom marks-per-question and any negative marking penalty.
- Negative Marking CalculatorFind out how many marks are deducted for wrong answers in any exam with negative marking.
- Safe Score CalculatorCalculate a safe target score by adding a buffer above the expected exam cutoff.
- Required Marks CalculatorCalculate how many marks you need to achieve a target percentage in an exam.
- Percentile & Rank CalculatorConvert between rank and percentile for any exam, given the total number of candidates.
- Expected Rank CalculatorEstimate your exam rank from your score using reference points from past results.
- Cutoff Gap CalculatorCheck if you cleared the cutoff and see exactly how many marks above or below you are.
- Final Selection Score CalculatorCalculate your weighted overall score across prelims, mains, interview, and skill test components.
- Attempt Strategy CalculatorFind the optimal number of questions to attempt given your accuracy and negative marking.
Measurements & Utilities
Open category- Land Area CalculatorConvert Indian regional land units (Katha, Bigha, Kanal, Guntha) to sq ft, acres, and more — with state-aware conversions.
- Plot Area CalculatorCalculate the area and perimeter of a rectangular or square plot in ft, m, or yd — with instant conversions to sq ft, sq m, acres, and hectares.
- Land Price CalculatorCalculate the total price of a plot from its area and rate per unit — sq ft, sq m, acre, Katha, Marla, Kanal, and more. INR results in lakh/crore.
- FSI / FAR CalculatorCalculate the total permissible built-up floor area from plot area and FSI or FAR value. Supports all area units including Indian regional units. Optional indicative floor breakdown.
- Unit ConverterConvert length, weight, area, volume, speed, time, data, and temperature units instantly.
- Speed Distance Time CalculatorSolve for speed, distance, or time given the other two values.
- Power Consumption CalculatorEstimate electricity usage and monthly bill for any home appliance.
- Government Form Photo & Signature ToolResize, crop and compress passport photos and signatures to exact government application requirements — right in your browser.
- PDF ToolsMerge, split, reorder, rotate, and reduce PDFs privately in your browser.
- Image ToolsCrop, resize, compress, and convert images privately in your browser.