57+ calculators and predictors across 12 categories. 57 available now, with more coming soon.
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Calculate your SIP returns, plan goal-based investments, and compare regular vs step-up SIP — all with interactive charts and detailed year-wise analysis.
Free old vs new tax regime calculator online – compare income tax under both regimes side-by-side and find which regime is best for tax saving in FY 2025-26.
Calculate your loan EMI, total interest, and repayment schedule instantly — for home loans, car loans, and personal loans.
Calculate GST amount, CGST, SGST, and total price instantly — add or remove GST from any amount for all GST slabs.
Calculate Fixed Deposit maturity amount, total interest earned, and effective annual yield for any FD tenure and interest rate.
Calculate compound interest on any investment or loan — see how your money grows with the power of compounding over time.
Calculate simple interest on any principal amount — find total interest earned and final amount with the SI formula instantly.
Calculate PPF maturity amount, total interest earned, and year-wise growth for any annual deposit at 7.1% — India's safest long-term investment.
Convert your CTC to monthly in-hand salary — calculate take-home pay after PF, gratuity, and professional tax deductions.
Calculate the sale price, savings amount, and final price after any percentage discount — instantly for any original price.
Calculate the future equivalent value of money and how inflation erodes purchasing power over time.
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Simulate your YouTube earnings based on views, niche, RPM, and monetization level — instantly.
Find out how much Instagram pays in India — income by 1K, 10K, 100K, 500K & 1M followers with sponsored post rates, affiliate earnings & monthly income calculator.
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Predict how your property value will grow over time based on appreciation rates.
Compare the total cost of renting vs buying a home over time to make the right decision.
Find out how much home you can afford based on your income and financial situation.
Calculate rental yield and ROI on investment properties to make informed investment decisions.
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Predict how long it will take to reach your target weight based on calorie deficit.
Discover your genetic muscle-building potential and realistic timeline for natural gains.
Calculate your Body Mass Index and understand your weight category with health recommendations.
Calculate your optimal calorie deficit and daily intake for sustainable weight loss goals.
Calculate your Total Daily Energy Expenditure (TDEE) — find exactly how many calories you need per day to maintain, lose, or gain weight.
Find your ideal body weight using the Robinson formula based on height and gender.
Estimate your body fat percentage using the US Navy formula — no calipers needed.
Calculate your pregnancy due date from your last menstrual period (LMP).
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A fun predictor that estimates your marriage timeline based on life factors. For entertainment only!
Estimate your trimester changes, anatomy scan window, full-term dates, and hospital bag ready-by date from your due date, gestational age, or last menstrual period.
Estimate your ovulation date, fertile window, next expected period, and cycle timing — privacy-first, no data saved, runs entirely in your browser.
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ProCalc offers the most comprehensive collection of free online calculators on the web. Every calculator on this page is completely free to use — no sign-up required, no data collected, and all calculations happen entirely in your browser.
Our calculators span 12 categories including finance (SIP, EMI, compound interest), creator tools (YouTube money, Instagram earnings), AI tools (OpenAI API costs, token counting), business metrics (break-even, profit margins), and many more. Each calculator comes with detailed explanations, formulas, worked examples, and frequently asked questions.
Whether you are a student solving math problems, a professional planning investments, a content creator estimating ad revenue, or a business owner calculating margins, ProCalc has the right tool for you. Bookmark this page to always have quick access to every calculator we offer.