Full-featured scientific calculator for students, engineers and professionals. Trigonometry, logarithm, powers and more.
Click INV to toggle inverse functions (sin⁻¹, cos⁻¹, tan⁻¹, 10ˣ, eˣ). Switch between DEG and RAD mode for trigonometry. Use MS/MR to store and recall memory values.
Keyboard supported — type numbers and operators directly. Press Enter for equals, Escape to clear.
This free Scientific Calculator is designed specifically for Indian users, using official formulas verified against government and authoritative sources. All calculations are updated using the formulas and assumptions described on this page. No sign-up, no download, and no charge — results are instant and displayed in Indian number format (lakhs and crores).
Enter your values in the input fields above and click the Calculate button. Results update immediately. You can modify any input and recalculate as many times as needed. All inputs are processed locally in your browser — your financial data is never transmitted to any server or stored anywhere.
The Scientific Calculator uses standard mathematical and scientific formulas based on SI units and internationally recognized conventions. Every formula is cross-verified for accuracy before publication.
Results from this calculator are indicative estimates based on the inputs you provide. Actual results may vary depending on changes in interest rates, tax laws, market conditions, and individual circumstances. For significant financial decisions — home purchase, retirement planning, tax filing — always consult a qualified SEBI-registered financial advisor or Chartered Accountant who can account for your complete financial situation.
CalcuTools India is an independent, free calculator platform covering personal finance, income tax, salary, loans, investments, retirement planning, and health, with every formula verified against official sources. We are not affiliated with any bank, insurance company, NBFC, or financial products distributor. Our calculators are free from sales pressure or product promotion — our only interest is helping you make informed financial decisions with accurate tools.
CalcuTools India · Verified Indian Calculators · Updated July 2026 · FY 2025-26 · About Us · How We Verify · Editorial Policy · Disclaimer
Our online scientific calculator handles trigonometry (sin, cos, tan and their inverses), logarithms (log base 10 and natural log), powers (x^y), square roots, cube roots, factorial (!), and memory functions. Used by students, engineers, and scientists across India for JEE, GATE, and professional calculations.
Our calculator supports both degree and radian modes. Switch between DEG and RAD mode before calculating. For JEE and school exams, most problems are in degrees. For engineering and advanced mathematics, radians are standard. sin(30°) = 0.5, cos(60°) = 0.5, tan(45°) = 1. In radians: sin(π/6) = 0.5, cos(π/3) = 0.5.
log(x) calculates logarithm base 10 (common log). ln(x) calculates natural logarithm (base e = 2.71828). These are used in compound interest formulas, pH calculations, decibel levels, and Richter scale. Example: log(1000) = 3, log(100) = 2, ln(e) = 1, ln(1) = 0. For antilog: use 10^x for antilog base 10.