Math Tools & Converters
Everyday tools: a scientific calculator, unit converter, number-base and matrix maths.
Updated June 2026 · Free · No sign-up
This is the general-purpose toolkit for calculations that do not fit a single formula, covering powerful all-in-one tools and conversions between systems of measurement and number bases. At its centre are the Scientific calculator, with trigonometry, logarithms, powers and memory, and the Unit Converter for length, weight, temperature, volume, speed and more.
For computing and discrete maths, the Binary/Hex and Hex calculators convert and operate across binary, decimal, hexadecimal and octal, while the Matrix calculator handles addition, multiplication, determinants and transposes for 2x2 and 3x3 matrices. The Random Number Generator rounds out the set for quick draws, lists and dice rolls.
All Math Tools & Converters
Scientific Calculator
Full scientific calculator with trig, logarithms, powers, roots, and memory functions.
Unit Converter Calculator
Convert between hundreds of units: length, weight, temperature, area, volume, speed, pressure, energy and more.
Binary / Hex Calculator
Convert between binary, decimal, hexadecimal, and octal number systems.
Hex Calculator Calculator
Perform arithmetic operations directly in hexadecimal — add, subtract, multiply hex numbers.
Random Number Calculator
Generate random numbers within any range. Single numbers, lists, or dice rolls.
Matrix Calculator
Add, subtract, multiply 2×2 and 3×3 matrices, and find determinant and transpose.
Frequently asked questions
How do you convert a decimal number to binary and hexadecimal?
To convert to binary, repeatedly divide the number by 2 and read the remainders from bottom to top; for hexadecimal, divide by 16 instead and use the digits A to F for the values 10 to 15. For example, decimal 255 is 11111111 in binary and FF in hexadecimal. The Binary/Hex calculator does these conversions in both directions automatically.
What does the determinant of a matrix tell you?
The determinant is a single number computed from a square matrix that indicates whether the matrix is invertible: if the determinant is zero the matrix is singular and has no inverse. For a 2x2 matrix [[a, b], [c, d]] the determinant is ad - bc. Geometrically, its absolute value is the scaling factor the matrix applies to area or volume.
Are degrees and radians different in a scientific calculator?
Yes, and using the wrong mode is a common source of errors. Trigonometric functions like sine and cosine give different results depending on whether the angle is read as degrees or radians, where 180 degrees equals pi radians (about 3.14159). Always confirm the calculator's angle mode before computing sin, cos or tan.
How is the metric unit of temperature converted to Fahrenheit?
To convert Celsius to Fahrenheit use F = C times 9/5 + 32, and to go back use C = (F - 32) times 5/9. So 100 degrees Celsius equals 212 degrees Fahrenheit, and 0 degrees Celsius equals 32 degrees Fahrenheit. The Unit Converter also supports Kelvin, where K = C + 273.15.
Explore other calculator hubs
Loan & EMI Calculators
Every EMI, eligibility and prepayment tool for Indian borrowers — in one place.
Income Tax Calculators (FY 2026-27)
Plan your FY 2026-27 taxes — regime comparison, deductions, TDS and salary, all updated to the latest slabs.
Investment & Mutual Fund Calculators
Project your wealth — SIP, lumpsum, step-up, withdrawals and return metrics for Indian investors.
Savings & Deposit Calculators
Maturity and interest for every Indian savings scheme — government and bank.
Health & Fitness Calculators
Know your numbers — body composition, calories and macros, with Asian-Indian health cutoffs.
CGPA & Percentage Calculators
Convert CGPA, SGPA and marks to percentage using each board's official formula.
Insurance Premium Calculators
Estimate the premium for every policy — life, health and motor — before you buy.
Retirement & Pension Calculators
Plan the corpus and monthly pension you'll retire on — every Indian retirement tool in one place.
GST & Business Calculators
Run the numbers for your shop or business — GST, pricing, margins and returns.
Date & Time Calculators
Work out any date, duration or auspicious time — from your age to today's Panchang.
Stock Market & Trading Calculators
Every trade-cost, margin and options tool an Indian trader needs — in one place.
Money & Budgeting Calculators
Plan a budget, grow your savings and protect against inflation — all in one place.
Property, NRI & Forex Calculators
Property purchase, NRI remittance and forex transfers — costed for India in one place.
Pregnancy & Women's Health Calculators
Plan your cycle and pregnancy — ovulation, due dates and healthy weight gain in one place.
Fitness & Running Calculators
Train by the numbers — pace, heart-rate zones, splits and strength, all in one toolkit.
Diet & Body Metrics Calculators
Know your body's numbers — macros, hydration, fasting windows and key health markers.
Statistics & Probability Calculators
From averages to p-values — descriptive stats, probability and inference made simple.
Geometry Calculators
Solve area, volume, triangles and circles with the correct formula every time.
Algebra & Numbers Calculators
Solve percentages, fractions, quadratics, exponents and factors with full steps.
Science & Engineering Calculators
Solve physics, chemistry and electronics with Ohm's law, half-life and molarity.
Exams & Admissions Calculators (India)
Predict your rank, band and score — and cost a degree abroad — all in one place.
Vehicle & Travel Calculators
Work out what your car really costs to buy and run — on-road price, fuel and EV charging.
Home & Energy Calculators
Get a grip on your power bill — estimate electricity costs, AC running and solar savings.
Construction & DIY Calculators
Estimate materials before you buy — concrete, tiles, roofing and Indian land units.
Everyday Tools & Fun Calculators
Quick everyday helpers and a few just-for-fun tools, from bill splits to pet ages.