Equa: All-in-One Calculator

Equa puts 65 accurate calculators and converters in one fast, modern app. No ads, no subscriptions, no sign-up and no internet needed. NO ADS. EVER. Other calculator apps interrupt you with full-screen ads in the middle of a sum, or push you into a subscription. Equa has neither. Every tool is free and every result stays on your phone. SMART NOTES Write math the way you think, and every line answers itself as you type: • "Rent: 1200", "groceries 340", then "total" for a running sum • "dinner 86 + 18%" for tips and tax, "20% of 640" for discounts • "5 kg to lb", "30 c in f", "1.5 hours in min" for instant unit conversion • Name values ("rate = 5") and reuse them, or use "prev" for the last answer • Tap any answer to copy it ANSWERS RIGHT IN SEARCH Type "12*8" or "5 km in miles" into the home search bar and see the answer instantly. Tap it to save it to Smart Notes. CALCULATORS • Standard: exact decimal math, so 0.1 + 0.2 is always 0.3, with a live preview of the answer as you type • Scientific: trig in degrees or radians, log, ln, powers, roots, factorial, memory • Programmer: convert between decimal, binary, octal and hex • Fraction: add, subtract, multiply and divide fractions and mixed numbers • History: past Standard and Scientific results, saved on your device CONVERTERS • Length, weight, temperature, volume, area, time, speed, digital storage, pressure, energy, power, angle, data speed and cooking • Color (HEX, RGB, HSL) and Roman numerals • Convert in either direction and switch units instantly MONEY • Loan & EMI: monthly, bi-weekly or weekly payments with full amortization schedule • SIP & lump sum: see invested amount, returns and final value • GST: add or remove tax with 5%, 12%, 18%, 28% and 40% presets and a CGST/SGST split • Compound interest, savings goal, ROI & CAGR, inflation and debt payoff • Retirement / FIRE, salary, home affordability and break-even • Discount, profit & loss, percentage, tip and bill split • Unit price: find the best value between up to three items • Fuel cost: trip cost, fuel needed and cost per person • Electricity cost HEALTH & FITNESS • BMI and BMR with daily calorie targets • Body fat, ideal weight, macros, water intake and calories burned • Running pace and sleep cycles MATH & SCHOOL • Equation solver, statistics, primes & factors and right triangle • Weighted average, final grade and random numbers & dice HOME & EVERYDAY • Room & paint, concrete, aspect ratio and Ohm's law • Age and date calculator: exact age, days between dates, weekdays, add or subtract days • Time duration and trip time WHY EQUA • No ads, no subscriptions, no account • Accurate: checked by over 1,000 automated tests • Private: nothing leaves your device • Works offline • Liquid Glass design with system, light, dark and black themes • Favorites, recents and search to jump to any tool