SmartCalc Multi Tool

Calculator SmartCalc MultiTool puts 36 calculators in one free app — and every single one works with no internet connection at all.

No account. No sign-in. No ads. No subscription. Nothing is locked behind a
paywall, and nothing you type ever leaves your phone.

36 CALCULATORS, 7 CATEGORIES

EVERYDAY
• Calculator — arithmetic with memory keys and a movable cursor
• Scientific Calculator — trigonometry, logarithms, powers, brackets, Ans
• Percentage Calculator — percent of an amount, increase, decrease, marks
• Unit Converter — 17 categories: length, mass, temperature, area, volume,
speed, data, pressure, energy, power, force, angle, frequency, fuel economy
• Number to Words — for cheques and invoices, Indian and international

FINANCE
• EMI Calculator — monthly instalment, total interest, extra-payment savings
• Salary Calculator — take-home pay after overtime, tax and deductions
• GST / Tax Calculator — add tax, or work backwards from a tax-inclusive price
• Interest Calculator — simple interest, compound interest, fixed deposits
• Investment Calculator — SIP, lumpsum and recurring deposit projections
• Currency Converter — offline, using rates you set yourself
• Tip & Bill Split — tip, total, and exactly what each person owes
• Fuel Cost Calculator — trip cost, mileage, cost per passenger
• Electricity Bill — from a meter reading, or appliance by appliance

BUSINESS
• Profit Calculator — profit after commission, gateway fees and shipping
• Discount Calculator — one item or a whole basket, with tax
• Margin & Markup — price from a target margin, or margin from a price
• ROI Calculator — return, ROAS and payback period
• Break-even Calculator — units needed to cover fixed costs, margin of safety

HEALTH
• BMI Calculator — body mass index and your healthy weight range
• Calorie Calculator — BMR, TDEE and macros for your goal
• Body Fat Calculator — US Navy tape method
• Ideal Weight — Devine, Robinson, Miller and Hamwi formulas
• Water Intake — daily target from weight, activity and climate
• Pregnancy Due Date — due date, gestational age and trimester

MATH & DEVELOPER
• Fraction Calculator — exact fraction arithmetic, no rounding
• Statistics — mean, median, mode, variance, standard deviation, quartiles
• Number Base Converter — binary, octal, decimal, hex and bitwise operations
• Roman Numerals — both directions, strict standard notation
• Quadratic Equation — real and complex roots, vertex, discriminant
• GPA Calculator — weighted 4.0 scale

DATE & TIME
• Age Calculator — exact age, the day you were born, next birthday countdown
• Date Calculator — days between dates, add or subtract, business days
• Time Duration — hours between two times, built for timesheets
• Speed, Distance & Time — solve for any one of the three, plus pace

CONSTRUCTION — for civil engineers, contractors and site supervisors
• Construction Quantity — CFT, SFT and RFT takeoff straight from dimensions.
Add items, deduct doors and windows, mix feet, inches and metres freely, set
your own block and tile sizes, and get material estimates: cement bags, sand,
aggregate, bricks, tiles, paint and steel bar weight.

WHY PEOPLE KEEP IT INSTALLED

TRULY OFFLINE
The app has no internet permission at all. Not "works offline" — it cannot
connect. Nothing is tracked, nothing is collected, nothing is uploaded, ever.

A GUIDE INSIDE EVERY CALCULATOR
Not sure what a field wants? Tap "?" at the top of any calculator for a plain
explanation, a worked example, and the formula used.

SAVE, FIND AND SHARE YOUR WORK
Save any result to History, grouped by calculator. Rename entries, search
them, and export a calculator's results as a clean PDF that lands in your
Downloads folder ready to print, email or send on WhatsApp.

LOCK IT DOWN
Protect the app with a 4-digit PIN or your fingerprint — you pick one, exactly
like your phone's own lock.