NumerIQ Scientific Calculator

NumerIQ is a powerful scientific calculator with 200+ built-in tools for students, teachers, engineers, researchers and everyday use.

Use NumerIQ as a scientific calculator, graphing calculator, unit converter and advanced math calculator — all in one app. Everything is unlocked and works offline, with no subscription or paywall.

WHY NUMERIQ

• Genuinely free. No subscription, paywall, "pro" tier or locked tools.
• Works offline. Calculators, converters, solvers and graphs run on your device.
• Your work stays yours. Calculations, history and notes never leave your phone.

SCIENTIFIC CALCULATOR

• Natural display. Fractions stack, roots show their contents clearly, and powers appear as real superscripts.
• Tap to edit expressions. Double-tap selects a whole term for function keys.
• Calculus on the keypad: d/dx, ∫dx, Σ, Π and lim can be built directly into expressions.
• An ⓘ button opens calculation details, including derivative functions and antiderivatives where available.
• Ten memory registers (M0–M9).
• Degrees, radians and gradians, plus NORM, FIX, SCI and ENG modes.
• Optional 20–100 digit exact arithmetic.
• Switch answers between decimal and fraction with one key.

UNIT CONVERTER — 18 CATEGORIES, 250+ UNITS

Convert length, mass, temperature, area, volume, speed, time, pressure, energy, power, force, torque, density, fuel economy, frequency, data, data rate and angle. Live currency rates are also available.

GRAPHING & ADVANCED MATH

• 2D graphing for y = f(x) and x = g(y), with tap-to-trace.
• 3D surface plots.
• Equation solver for linear and quadratic equations, polynomials up to degree 12 with complex roots, and 2×2 and 3×3 systems.
• Worked steps for supported solutions.
• Calculus with exact answers where possible and numerical methods where necessary.
• Matrices, vectors, statistics and five regression models.
• Programmer calculator with binary, octal and hexadecimal modes, logic operations and bit shifts from 8 to 64 bits.
• Signed and unsigned values side by side, with overflow reported.
• Fractions and recurring decimals, including 0.(3) = 1/3.
• Number theory, complex numbers and scientific notation.

SCIENCE TOOLS

• 18 physics formulas and 9 chemistry calculations.
• Molar mass parser supporting K4[Fe(CN)6] and CuSO4·5H2O.
• 118-element periodic table and 104 constants.
• Four-figure logarithm and antilogarithm tables.

EVERYDAY CALCULATORS

• Loan EMI with a full amortisation schedule.
• SIP and RD projections, simple interest and CAGR.
• GST and sales tax with CGST/SGST/IGST split.
• Correct "remove GST" calculations that divide by the tax factor.
• Date, age and leap-year calculators.
• BMI, degrees-minutes-seconds and percentage tools.

MADE TO SUIT YOU

• Larger buttons and text that follow your phone's settings.
• Reduce animations.
• Haptic feedback with an on/off option.
• Auto brightness improves readability in strong light without changing your device setting.

GUIDE & FORMULA REFERENCE

• Plain-English guidance for every key and tool, with examples.
• 291 formulas across 45 topics.
• Search formulas by name or symbol and filter by level.

BUILT FOR ACCURACY

NumerIQ uses a hand-written mathematical parser. It handles operator precedence, implicit multiplication and controlled rounding.

More than 2,100 automated tests check results against published reference values and verify displayed results.

NumerIQ is a calculation tool, not a professional adviser. Verify calculations that affect important financial, academic, engineering or other real-world decisions.

FREE, OFFLINE & PRIVACY-FOCUSED

NumerIQ is free to use and supported by a small banner ad that stays out of the keypad and result area. No account, analytics SDK, crash SDK or server is required for its calculators and tools. Where required by law, you are asked for consent before an ad loads.

Privacy Policy and Terms of Use are available inside the app and can be read offline.

Questions or feedback? Contact support@qubitsoftech.com