All calculators
Browse every calculator currently implemented on Calculator.org.in. Links are standard crawlable links for users and search engines.
Finance
Calculate loans, interest, deposits, investments, repayments, and income changes with transparent formulas and schedules.
EMI Calculator
Calculate monthly EMI, total interest, total payment, processing fee, total cost, and amortization summary.
Open EMI Calculator
Loan Calculator
Calculate monthly payment, total interest, total repayment, fees, and amortization summary.
Open Loan Calculator
Mortgage Calculator
Estimate monthly mortgage payment, total interest, total repayment, taxes, insurance, PMI, and amortization.
Open Mortgage Calculator
Auto Loan Calculator
Estimate monthly car payments, amount financed, total interest, tax, fees, and amortization.
Open Auto Loan Calculator
Credit Card Payoff Calculator
Estimate how long it may take to pay off a credit card balance or what monthly payment may be needed for a target payoff timeline.
Open Credit Card Payoff Calculator
APR Calculator
Estimate a loan's annual percentage rate from its reducing-balance interest rate, term, processing fee, mandatory upfront charges, and charges financed into the EMI.
Open APR Calculator
Debt-to-Income Ratio Calculator
Calculate current and projected debt-to-income ratios from gross income, housing costs, EMIs, credit card minimums, and other recurring monthly debts.
Open Debt-to-Income Ratio Calculator
Simple Interest Calculator
Calculate simple interest, total amount, principal, interest rate, or time period.
Open Simple Interest Calculator
Compound Interest Calculator
Calculate future value, compound interest earned, total contributions, and yearly growth.
Open Compound Interest Calculator
FD Calculator
Estimate fixed deposit maturity amount and interest earned using deposit amount, rate, tenure, and compounding frequency.
Open FD Calculator
CD Interest Calculator
Estimate certificate of deposit maturity balance, interest earned, and implied APY from deposit, rate, term, and compounding frequency.
Open CD Interest Calculator
CD Rate Calculator
Estimate the annual CD rate and APY needed to grow an initial deposit to a target maturity balance.
Open CD Rate Calculator
Savings Calculator
Project savings growth, interest earned, inflation-adjusted value, goal progress, required monthly savings, and an annual balance schedule.
Open Savings Calculator
Inflation Calculator
Estimate future cost, purchasing-power loss, cumulative inflation, inflation-adjusted growth, CPI change, and a year-by-year value path.
Open Inflation Calculator
Investment Return Calculator
Project investment growth from a lump sum and recurring contributions, then estimate fee drag, final-gain tax, inflation-adjusted value, and cash-flow annualized return.
Open Investment Return Calculator
Retirement Calculator
Estimate the corpus required at retirement, project the corpus from your current savings plan, solve the monthly contribution gap, and model inflation-linked retirement withdrawals.
Open Retirement Calculator
SIP Calculator
Estimate systematic investment plan future value, total investment, estimated returns, and yearly growth summary.
Open SIP Calculator
CAGR Calculator
Calculate compound annual growth rate, total return, growth multiple, inflation-adjusted growth, benchmark difference, and a constant-growth value path.
Open CAGR Calculator
Salary Increase Calculator
Calculate a gross salary increase by percentage, fixed annual raise, or new salary and see annual, monthly, biweekly, and weekly impact.
Open Salary Increase CalculatorMath
Solve arithmetic, number, statistics, geometry, ratio, and calculus problems with worked steps and formula guidance.
Percentage Calculator
Calculate percentages, percentage change, and adding or subtracting a percentage from a value.
Open Percentage Calculator
Average Calculator
Calculate arithmetic average, median, mode, count, sum, minimum, maximum, range, and sorted values from a list of numbers.
Open Average Calculator
Calculator
Free online calculator for everyday arithmetic with keyboard support.
Open Calculator
Rounding Calculator
Round numbers by decimal places, significant figures, place value, ceiling, floor, or truncation with tie-rule and comparison outputs.
Open Rounding Calculator
Mixed Number Calculator
Add, subtract, multiply, or divide mixed numbers, whole numbers, proper fractions, and improper fractions with step-by-step conversion results.
Open Mixed Number Calculator
Fraction Calculator
Add, subtract, multiply, or divide two fractions and see the simplified fraction, mixed number, decimal, and calculation steps.
Open Fraction Calculator
Long Division Calculator
Divide whole numbers with quotient, remainder, decimal result, and long division steps.
Open Long Division Calculator
LCM Calculator
Find the least common multiple of two or more whole numbers, with prime factors and steps.
Open LCM Calculator
Factor Calculator
Find all factors, factor pairs, and prime factorization for a whole number.
Open Factor Calculator
Ratio Calculator
Simplify a two-part ratio and convert it to decimal, percent, and share-of-total views.
Open Ratio Calculator
Proportion Calculator
Solve a missing value in a proportion A/B = C/D using cross multiplication.
Open Proportion Calculator
Scientific Calculator
Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, factorials, and parentheses without using unsafe code evaluation.
Open Scientific Calculator
Median Calculator
Find the median, sorted values, count, minimum, and maximum from a list of numbers.
Open Median Calculator
Statistics Calculator
Calculate mean, median, mode, range, variance, and sample standard deviation from a list of numbers.
Open Statistics Calculator
Standard Deviation Calculator
Calculate sample or population standard deviation, variance, mean, deviations, squared deviations, and coefficient of variation from a data set.
Open Standard Deviation Calculator
Weighted Average Calculator
Calculate a weighted mean from paired values and weights with contribution percentages, normalized weights, and an audit table.
Open Weighted Average Calculator
Pythagorean Theorem Calculator
Solve the missing side of a right triangle using a^2 + b^2 = c^2, with area and perimeter.
Open Pythagorean Theorem Calculator
Aspect Ratio Calculator
Calculate an image, video, or screen aspect ratio and resize dimensions while preserving proportions.
Open Aspect Ratio Calculator
Slope Calculator
Find the slope, line equation, and angle between two coordinate points.
Open Slope Calculator
Area Calculator
Calculate area for rectangles, circles, triangles, and trapezoids with clear formula output.
Open Area Calculator
Volume Calculator
Calculate volume for rectangular prisms, cylinders, spheres, and cones.
Open Volume Calculator
Derivative Calculator
Find the derivative of a polynomial expression and evaluate the derivative at a selected x value.
Open Derivative Calculator
Integral Calculator
Find the antiderivative of a polynomial and calculate a definite integral when bounds are provided.
Open Integral Calculator
Quadratic Formula Calculator
Solve ax² + bx + c = 0, classify the discriminant, and find real or complex roots, the vertex, axis of symmetry, and parabola direction.
Open Quadratic Formula CalculatorConstruction
Estimate construction materials, project dimensions, surface coverage, volume, stairs, roofing, and trade quantities.
Bitumen Calculator
Estimate bitumen binder quantity, litres, package count, mix weight, and binder-content scenarios from road dimensions, density, binder percentage, and wastage.
Open Bitumen Calculator
Asphalt Calculator
Estimate asphalt volume, tons, suggested order quantity, thickness scenarios, and optional material cost from length, width, thickness, density, and price.
Open Asphalt Calculator
Concrete Calculator
Estimate concrete cubic feet, cubic yards, waste allowance, bag count, and optional ready-mix cost for rectangular slabs and footings.
Open Concrete Calculator
Gravel Calculator
Estimate gravel area, cubic feet, cubic yards, tons, tons with waste, and optional material cost from project dimensions.
Open Gravel Calculator
Stone Calculator
Estimate stone cubic yards, tons, waste-adjusted tons, and optional material cost for rectangular, triangular, or circular areas.
Open Stone Calculator
Mulch Calculator
Estimate mulch cubic feet, cubic yards, bulk order quantity, bag counts, coverage, and optional bag or bulk cost.
Open Mulch Calculator
Cubic Yard Calculator
Estimate cubic yards, cubic feet, waste allowance, and optional material cost for rectangular, triangular, or circular areas.
Open Cubic Yard Calculator
Cubic Feet Calculator
Calculate cubic feet, cubic yards, cubic inches, quantity totals, and optional cost from rectangular dimensions.
Open Cubic Feet Calculator
Square Footage Calculator
Calculate square feet, conversions, waste allowance, quantity totals, package count, and optional cost for common area shapes.
Open Square Footage Calculator
Board Feet Calculator
Calculate board feet per piece, total board feet, waste-adjusted board feet, and optional lumber cost from thickness, width, length, and quantity.
Open Board Feet Calculator
Lumber Calculator
Estimate whole lumber pieces, bundle rounding, nominal and actual board feet, linear length, cubic volume, weight, fasteners, delivery loads, and cost in metric or imperial units.
Open Lumber Calculator
Paint Calculator
Estimate wall and ceiling paint, primer, whole containers, leftover paint, material cost, and labour from room dimensions, openings, coats, coverage, and waste.
Open Paint Calculator
Tile Calculator
Estimate floor or wall tiles using both area and edge-layout methods, then calculate waste, boxes, spares, adhesive, grout, labour, and project cost.
Open Tile Calculator
Flooring Calculator
Estimate laminate, vinyl plank, engineered wood, hardwood, bamboo, or cork flooring by room, box, plank, underlay, trim, transitions, and installed cost.
Open Flooring Calculator
Soil Calculator
Estimate topsoil, garden mix, compost, potting mix, or fill dirt by finished volume, settlement, weight, bags, bulk units, delivery loads, amendments, and cost.
Open Soil Calculator
Deck Calculator
Estimate deck boards, rows, waste, joists, rim boards, beams, posts, footings, concrete, fasteners, railing, stair materials, weight, delivery, labour, and cost.
Open Deck Calculator
Roofing Calculator
Estimate sloped roof area, pitch, waste, squares, shingle bundles or roofing sheets, underlayment, ridge caps, starter, edge and valley flashing, fasteners, delivery, labour, and cost.
Open Roofing Calculator
Insulation Calculator
Estimate insulation area, R-value shortfall, thickness, batts, rolls, boards, loose-fill bags or spray-foam kits, barrier rolls, delivery, labour, and cost.
Open Insulation Calculator
Stud Wall Calculator
Estimate on-centre studs, opening framing, corners, intersections, plates, blocking, headers, sheathing, fasteners, board feet, delivery, labour, and cost.
Open Stud Wall Calculator
Drywall Calculator
Estimate drywall sheets, net area, joint compound, tape, screws, and optional panel cost from room dimensions and sheet size.
Open Drywall Calculator
Stair Calculator
Estimate stair risers, treads, actual riser height, total run, stair angle, and stringer length from total rise and tread dimensions.
Open Stair Calculator
Roof Pitch Calculator
Calculate roof pitch, slope percent, roof angle, rafter length, and rafter length with optional overhang from rise and run.
Open Roof Pitch Calculator
Conduit Fill Calculator
Estimate conduit fill percentage, allowed fill area, and remaining area from conductor area, conductor count, and conduit internal area.
Open Conduit Fill CalculatorScience & Engineering
Use chemistry, networking, electrical, and logistics calculators for technical conversions, component identification, and planning estimates.
Subnet And IP Address Calculator
Calculate IPv4 subnet details including network address, broadcast address, usable host range, subnet mask, wildcard mask, and CIDR notation.
Open Subnet And IP Address Calculator
IPv6 Subnet Calculator
Expand or compress an IPv6 address, calculate its CIDR range and scope, create reverse DNS names, and plan exact child prefixes with 128-bit arithmetic.
Open IPv6 Subnet Calculator
Dilution Calculator
Solve C₁V₁ = C₂V₂, calculate stock and diluent volumes, plan replicates and overage, check transfer rounding, or generate an auditable serial dilution table.
Open Dilution Calculator
Density Calculator
Calculate density, mass, or volume with automatic SI and imperial conversion, geometric volume options, material references, significant figures, and uncertainty estimates.
Open Density Calculator
Moles Calculator
Convert mass, moles, molar mass, particles, solution molarity, and ideal-gas state values with exact Avogadro-constant handling and full equation audits.
Open Moles Calculator
Molarity Calculator
Calculate molarity, mass, volume, or moles with mass, volume, concentration unit conversion and purity-adjusted solution prep math.
Open Molarity Calculator
Molecular Weight Calculator
Calculate approximate molecular weight and molar mass from a chemical formula such as H2O, CO2, or Ca(OH)2.
Open Molecular Weight Calculator
Unit Converter
Convert common everyday, scientific, engineering, and digital units with category-aware selectors, transparent definitions, and a complete equivalents table.
Open Unit Converter
Resistor Calculator
Decode and encode 4-, 5-, and 6-band resistor colors, read SMD markings, combine resistor networks, and size an LED current-limiting resistor.
Open Resistor Calculator
Ohm's Law Calculator
Solve voltage, current, resistance, and power from any two known values with SI-prefix conversion, formula steps, resistor rating context, and tolerance sensitivity.
Open Ohm's Law Calculator
Voltage Drop Calculator
Estimate voltage drop, voltage drop percentage, and voltage at load from current, wire length, conductor material, phase, and wire size.
Open Voltage Drop Calculator
Freight Class Calculator
Estimate LTL freight class from shipment dimensions, total weight, quantity, and density.
Open Freight Class CalculatorHealth & Fitness
Estimate body composition, calorie needs, strength, and general health indicators with clear limitations and references.
BMI Calculator
Calculate adult body mass index using metric or imperial measurements, with category, healthy weight range, and medical context.
Open BMI Calculator
FFMI Calculator
Estimate fat-free mass index, normalized FFMI, fat-free mass, and fat mass from height, weight, and body fat percentage.
Open FFMI Calculator
Strength Calculator
Estimate one-rep max from weight lifted, repetitions, unit, and common strength formulas.
Open Strength Calculator
Calorie Calculator
Estimate BMR, daily maintenance calories, and general weight goal ranges using Mifflin-St Jeor.
Open Calorie Calculator
A1C Calculator
Convert A1C to estimated average glucose or estimated average glucose to A1C using the ADA/ADAG relationship.
Open A1C CalculatorEducation
Calculate GPA, grade averages, final-exam requirements, and AP practice-score estimates for academic planning.
GPA Calculator
Calculate semester GPA from course grades, custom grade points, and credit hours.
Open GPA Calculator
Cumulative GPA Calculator
Estimate a new cumulative GPA from current GPA, completed credits, semester GPA, and semester credits, with optional target GPA planning.
Open Cumulative GPA Calculator
Grade Average Calculator
Calculate an unweighted or weighted grade average, letter estimate, GPA estimate, and target score needed on remaining coursework.
Open Grade Average Calculator
Final Exam Calculator
Calculate the score needed on a final exam to reach a target course grade, with optional projected final grade.
Open Final Exam Calculator
AP Lang Score Calculator
Estimate an AP English Language and Composition practice score from multiple-choice correct answers and three essay rubric scores.
Open AP Lang Score Calculator
APUSH Score Calculator
Estimate an AP United States History practice score from MCQ, SAQ, DBQ, and LEQ raw points.
Open APUSH Score CalculatorDate & Time
Calculate age, working dates, elapsed duration, and calendar-based time intervals.
Age Calculator
Calculate exact age, total elapsed time, next birthday countdown, and birth day of week from date inputs.
Open Age Calculator
Working Dates Calculator
Count working days between dates or add and subtract working days while excluding weekends and custom holiday dates.
Open Working Dates Calculator
Time Duration Calculator
Calculate elapsed time between two 24-hour clock times, including optional break minutes and overnight spans.
Open Time Duration CalculatorBusiness
Calculate pricing, discounts, ROI, margins, markup, and advertising campaign costs.
Discount Calculator
Calculate sale price, discount amount, original price, discount percentage, and savings.
Open Discount Calculator
ROI Calculator
Calculate net profit, ROI percentage, and optional annualized ROI from investment inputs.
Open ROI Calculator
Profit Margin Calculator
Calculate profit, profit margin, markup, selling price from margin, and cost price from margin.
Open Profit Margin Calculator
Markup Calculator
Calculate markup, profit, margin, selling price from markup, and cost price from markup.
Open Markup Calculator
CPM Calculator
Calculate CPM, campaign cost, impressions, cost per impression, and impressions per dollar for advertising campaigns.
Open CPM CalculatorTax
Calculate tax-inclusive and tax-exclusive amounts with clear rate and rounding assumptions.
Everyday & Niche
Use practical and specialist calculators for tipping, brewing, gematria, and calendar-based interests.
Unit Converter
Convert common everyday, scientific, engineering, and digital units with category-aware selectors, transparent definitions, and a complete equivalents table.
Open Unit Converter
Tip Calculator
Calculate tip amount, total bill, per-person split, and rounded payment amounts.
Open Tip Calculator
ABV Calculator
Estimate alcohol by volume, alternate ABV, apparent attenuation, and gravity points from original and final gravity readings.
Open ABV Calculator
Gematria Calculator
Calculate English and Hebrew gematria values with common ciphers, word totals, letter breakdowns, and transparent arithmetic tables.
Open Gematria Calculator
Saturn Return Calculator
Estimate first, second, and third Saturn return timing from a birth date using Saturn's average orbital period.
Open Saturn Return Calculator