The Smartest Free
Online Calculator Platform

⚖️

BMI Calculator

Health · Body Mass

Calculate Body Mass Index from height and weight. WHO-standard categories with visual indicator.

WHO StandardInstant Results

Calculate BMI →

🎂

Age Calculator

Health · Age & Birthday

Exact age in years, months, and days. Shows days until next birthday.

Exact to DaysBirthday Countdown

Calculate Age →

🥗

Calorie Calculator

Health · TDEE & BMR

Calculate daily calorie needs using Mifflin-St Jeor formula for any activity level.

TDEE + BMR5 Activity Levels

Calculate Calories →

😴

Sleep Calculator

Health · Sleep Cycles

Find best bedtime or wake-up time based on 90-minute sleep cycles.

90-Min CyclesWake Refreshed

Calculate Sleep →

🏦

EMI Calculator

Finance · Loan EMI

Calculate monthly EMI for home, car, or personal loans. Full principal and interest breakdown.

All Loan TypesFull Breakdown

Calculate EMI →

🇮🇳

GST Calculator India

Finance · India Tax

All slabs: 5%, 12%, 18%, 28%. CGST, SGST and IGST breakdown instantly.

All GST SlabsCGST+SGST+IGST

Calculate GST →

📈

SIP Calculator

Finance · Mutual Fund

Calculate SIP maturity value from monthly mutual fund investments. Step-up SIP supported.

Step-up SIPWealth Projection

Calculate SIP →

💼

Salary Calculator

Finance · Pay Periods

Convert salary between hourly, daily, weekly, monthly, and annual pay periods.

All Pay PeriodsAny Currency

Convert Salary →

📊

Compound Interest

Finance · Investment Growth

See how your money grows with compound interest. Daily, monthly, quarterly compounding.

Daily CompoundingGrowth Chart

Calculate Growth →

🏷️

Discount Calculator

Finance · Shopping

Calculate final price and savings from any discount percentage. Optional tax support.

Instant SavingsOptional Tax

Calculate Discount →

⚙️

Steel Weight Calculator

Engineering · MS Sections

Calculate MS steel bar, rod, flat, angle weight per metre. 7 section types supported.

7 Section Typeskg & TonnesMS/SS/Al

Calculate Weight →

🔩

Plate Weight Calculator

Engineering · MS Plate

Calculate mild steel plate weight from dimensions and thickness in kg and tonnes.

mm/m/ft InputPer Plate & Total

Calculate Weight →

🔧

Pipe Weight Calculator

Engineering · MS/GI/SS Pipe

MS, GI, SS pipe weight per metre from OD and wall thickness. NB size presets.

OD+WT MethodNB Presets

Calculate Weight →

📐

Beam Load Calculator

Engineering · Structural

Calculate beam reactions and max bending moment for simply supported beams.

Point LoadUDLReactions

Calculate Load →

🔥

Weld Size Calculator

Engineering · Fillet Weld

Calculate required fillet weld size from load and weld length. IS 800 code reference.

Fillet WeldIS 800 Code

Calculate Weld →

🔩

Bolt Torque Calculator

Engineering · Fasteners

Calculate tightening torque for metric bolts from grade and diameter. Grade 4.6 to 12.9.

Metric BoltsGrade 4.6–12.9

Calculate Torque →

🏗️

Cement Calculator

Construction · Bags Needed

Calculate cement bags for concrete slab, column, or wall. M10 to M25 mix ratios.

M10 to M25Bags + kg Output

Calculate Cement →

🪨

Concrete Volume Calculator

Construction · Volume m³

Calculate concrete volume for slab, beam, column in cubic metres and cubic feet.

Slab/Beam/Columnm³ + ft³

Calculate Volume →

🧱

Brick Calculator

Construction · Wall Bricks

Calculate number of bricks for any wall size with mortar and wastage allowance.

Standard SizesWastage Included

Calculate Bricks →

🎨

Paint Calculator

Construction · Litres Needed

Calculate paint for any room. Automatically deducts door and window areas.

Room CalculatorDoor/Window Deduct

Calculate Paint →

⬜

Tile Calculator

Construction · Floor & Wall

Calculate number of tiles for floor or wall area. Any tile size with wastage allowance.

Any Tile Size5% Wastage

Calculate Tiles →

🔢

Percentage Calculator

Student · Math

What is X% of Y? X is what % of Y? Percentage increase and decrease.

3 Calc TypesIncrease/Decrease

Calculate % →

🎓

GPA Calculator

Student · 4.0 Scale GPA

Calculate GPA from grades and credit hours on the 4.0 scale. Unlimited subjects.

4.0 ScaleUnlimited Subjects

Calculate GPA →

🏅

CGPA Calculator

Student · CGPA to %

Calculate CGPA from multiple semesters. Convert CGPA to percentage for Indian universities.

CGPA to %Multi-Semester

Calculate CGPA →

📋

Attendance Calculator

Student · India Universities

Calculate attendance % and exactly how many classes you can skip or need to attend.

75% Min AlertClasses Needed

Calculate →

➗

Fraction Calculator

Student · Math

Add, subtract, multiply, divide fractions. Auto-simplifies to lowest terms.

Auto SimplifyAll Operations

Calculate →

📏

mm to inch Converter

Converters · Length

Convert millimetres to inches and inches to mm instantly. Includes conversion table.

Live ConversionConversion Table

Convert Now →

📐

Feet to mm Converter

Converters · Length

Convert feet and inches to mm and reverse. Essential for engineering and construction.

ft+in InputReverse Conversion

Convert Now →

⚖️

kg to lbs Converter

Converters · Weight

Convert kilograms to pounds and pounds to kg instantly with conversion table.

Live ConversionConversion Table

Convert Now →

💪

Body Fat Calculator

Health · US Navy Method

Calculate body fat percentage using the US Navy circumference method for men and women.

US Navy MethodMale & Female

Calculate →

💚

Ideal Weight Calculator

Health · Healthy Weight Range

Find your ideal weight range using BMI, Hamwi, Devine and Robinson formulas.

4 FormulasBy Height

Calculate →

💧

Water Intake Calculator

Health · Daily Hydration

Calculate your recommended daily water intake based on weight, activity and climate.

India ClimateActivity Based

Calculate →

🏃

Running Pace Calculator

Health · Min/km Pace

Calculate running pace, speed and predicted finish times for 5K, 10K, marathon.

Pace PredictorAll Distances

Calculate →

🤰

Pregnancy Calculator

Health · Due Date & Week

Calculate current pregnancy week, trimester and estimated due date from LMP.

Due DateTrimester

Calculate →

🏛️

PPF Calculator India

Finance · 7.1% Maturity

Calculate PPF maturity amount and interest earned over 15 years at current rate.

15 Year Lock-inTax Free

Calculate →

🏦

FD Calculator India

Finance · Fixed Deposit

Calculate FD maturity amount for any Indian bank with quarterly/monthly compounding.

All BanksCumulative/Non

Calculate →

🏠

HRA Calculator India

Finance · Rent Exemption

Calculate HRA tax exemption under Section 10(13A) for metro and non-metro cities.

Sec 10(13A)Metro/Non-Metro

Calculate →

🏡

Home Loan Eligibility

Finance · Max Loan Amount

Calculate maximum home loan eligibility based on income, EMIs and bank FOIR norms.

FOIR BasedAll Banks

Calculate →

🎁

Gratuity Calculator

Finance · Gratuity Act 1972

Calculate gratuity amount as per the Payment of Gratuity Act based on salary and service.

Gratuity ActTax Exempt ₹20L

Calculate →

👴

NPS Calculator India

Finance · Pension Scheme

Calculate NPS maturity corpus, lump sum withdrawal and monthly pension at retirement.

80CCD Tax BenefitAnnuity Calc

Calculate →

🪣

Plastering Calculator

Construction · Cement & Sand

Calculate cement bags and sand for wall plastering — internal, external, and ceiling.

12mm/20mmAll Mix Ratios

Calculate →

📊

BBS Calculator

Engineering · Bar Bending Schedule

Calculate cutting length and total steel weight for RCC reinforcement bars with hooks.

Multi Bar TypeHook Allowance

Calculate →

🔩

MS Channel Weight

Engineering · ISMC IS 808

Calculate ISMC steel channel weight per metre. All standard sizes ISMC 75 to 400.

IS 808 StandardAll ISMC Sizes

Calculate →

🔩

I Beam Weight Calculator

Engineering · ISMB ISWB

Calculate ISMB and ISWB steel I-beam weight per metre as per IS 808.

ISMB + ISWBIS 808

Calculate →

⬜

Hollow Section Weight

Engineering · RHS SHS CHS

Calculate steel hollow section weight for square, rectangular and circular tubes.

RHS/SHS/CHSSteel Tubes

Calculate →

⚡

Cable Size Calculator

Engineering · IS 732 India

Calculate correct electrical cable size in sq mm from load, length and voltage drop.

IS 732Single & 3-Phase

Calculate →

🏗️

Steel Qty for Slab

Engineering · RCC Slab Steel

Calculate steel reinforcement quantity for RCC slabs — main and distribution bars.

Main + Dist. BarsIS 456

Calculate →

⛏️

Excavation Calculator

Construction · Earth Work

Calculate excavation volume for foundation pits, trenches and drains in m³.

Pit/Trench/SlopeSoil Weight

Calculate →

🧱

PCC Volume Calculator

Construction · Plain Cement Concrete

Calculate PCC volume and cement quantity for foundation beds and levelling courses.

1:4:8 MixFoundation Bed

Calculate →

📦

Shuttering Area Calculator

Construction · Formwork

Calculate shuttering/formwork area for column, beam and slab in sq metres.

Plywood EstimateAll Elements

Calculate →

🪜

Staircase Calculator

Construction · Steps & Riser

Calculate number of steps, riser height and tread width for comfortable staircases.

Comfort FormulaNBC Compliant

Calculate →

🏛️

Anna University CGPA

Student · Tamil Nadu

Calculate Anna University CGPA and convert to percentage using official formula.

Official FormulaRegulation 2021

Calculate →

🎓

VTU CGPA Calculator

Student · Karnataka

Calculate VTU CGPA and convert to percentage for Visvesvaraya Technological University.

CBCS SchemeOfficial Formula

Calculate →

✨

Grace Marks Calculator

Student · Pass/Fail Check

Check if you pass with grace marks. Calculate marks needed across subjects.

CBSE/Anna Uni/VTUSubject-wise

Calculate →

📊

Marks to Percentage

Student · Quick Convert

Convert total marks obtained to percentage. Subject-wise and total mode available.

Subject-wiseGrade Classification

Calculate →

📝

Internal Marks Calculator

Student · CIE Assessment

Calculate internal assessment marks from tests, assignments and attendance.

CIE ComponentsWeighted Average

Calculate →

📏

cm to inches Converter

Converters · Length

Convert centimetres to inches and inches to cm instantly with live results.

Live Conversion

Convert →

🌡️

Celsius ↔ Fahrenheit

Converters · Temperature

Convert Celsius to Fahrenheit and back instantly. Useful for weather and cooking.

Live Conversion

Convert →

🪣

Litres to Gallons

Converters · Volume

Convert litres to US and UK gallons instantly with full conversion table.

US + UK Gallons

Convert →

📝

Word Counter

Tools · Text Analysis

Count words, characters, sentences, paragraphs and reading time. Live as you type.

Live CounterReading Time

Open Tool →

🔐

Password Generator

Tools · Security

Generate strong, secure random passwords. Custom length, character types, one-click copy.

Crypto SecureOne-Click Copy

Generate →

🧾

Tax Calculator

Finance · Income Tax

Calculate income tax and net take-home pay. India New Tax Regime supported.

India TaxTake-Home Pay

Calculate Tax →