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.
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Loan Calculator
Calculate monthly payment, total interest, total repayment, fees, and amortization summary.
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Mortgage Calculator
Estimate monthly mortgage payment, total interest, total repayment, taxes, insurance, PMI, and amortization.
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Auto Loan Calculator
Estimate monthly car payments, amount financed, total interest, tax, fees, and amortization.
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Credit Card Payoff Calculator
Estimate Indian credit card payoff time in ₹ with separate GST on finance charges, or switch currency for an international repayment plan.
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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.
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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.
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Simple Interest Calculator
Calculate simple interest and total amount together, or solve for a missing principal, annual rate, or time period.
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Compound Interest Calculator
Calculate future value, compound interest earned, total contributions, and yearly growth.
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FD Calculator
Estimate fixed deposit maturity amount and interest earned using deposit amount, rate, tenure, and compounding frequency.
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CD / Term Deposit Interest Calculator
Estimate CD or term-deposit maturity value, interest earned, and annual yield with INR as the default or another selected currency.
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CD / Term Deposit Rate Calculator
Estimate the annual rate and yield needed to grow a CD, fixed deposit, or term deposit to a target maturity balance.
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Savings Calculator
Project savings growth, interest earned, inflation-adjusted value, goal progress, required monthly savings, and an annual balance schedule.
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Inflation Calculator
Estimate future cost, purchasing-power loss, cumulative inflation, inflation-adjusted growth, CPI change, and a year-by-year value path.
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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.
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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.
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SIP Calculator
Estimate systematic investment plan future value, total investment, estimated returns, and yearly growth summary.
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CAGR Calculator
Calculate compound annual growth rate, total return, growth multiple, inflation-adjusted growth, benchmark difference, and a constant-growth value path.
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Salary Increase Calculator
Calculate salary hike percentage, revised monthly pay, or new annual CTC from a percentage, fixed raise, or proposed salary.
Open 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.
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Average Calculator
Calculate arithmetic average, median, mode, count, sum, minimum, maximum, range, and sorted values from a list of numbers.
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Calculator
Free online calculator for everyday arithmetic with keyboard support.
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Rounding Calculator
Round numbers by decimal places, significant figures, place value, custom multiple, ceiling, floor, or truncation with tie-rule and comparison outputs.
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Mixed Number Calculator
Add, subtract, multiply, divide, simplify, or convert mixed numbers, whole numbers, proper fractions, and improper fractions with step-by-step results.
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Fraction Calculator
Add, subtract, multiply, or divide two fractions and see the simplified fraction, mixed number, decimal, and calculation steps.
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Long Division Calculator
Divide whole numbers with quotient, remainder, decimal result, and long division steps.
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LCM Calculator
Find the least common multiple of two or more whole numbers, with prime factors and steps.
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Factor Calculator
Find all factors, factor pairs, and prime factorization for a whole number.
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Ratio Calculator
Simplify a two-part ratio and convert it to decimal, percent, and share-of-total views.
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Proportion Calculator
Solve a missing value in a proportion A/B = C/D using cross multiplication.
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Scientific Calculator
Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, factorials, angle modes, and reusable session history.
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Median Calculator
Find the median, sorted values, count, minimum, and maximum from a list of numbers.
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Statistics Calculator
Calculate mean, median, mode, range, variance, and sample standard deviation from a list of numbers.
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Standard Deviation Calculator
Calculate sample or population standard deviation, variance, mean, deviations, squared deviations, and coefficient of variation from a data set.
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Weighted Average Calculator
Calculate a weighted mean from paired values and weights with contribution percentages, normalized weights, and an audit table.
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Pythagorean Theorem Calculator
Solve the missing side of a right triangle using a^2 + b^2 = c^2, with area and perimeter.
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Aspect Ratio Calculator
Calculate an image, video, or screen aspect ratio and resize dimensions while preserving proportions.
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Slope Calculator
Find the slope, line equation, and angle between two coordinate points.
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Area Calculator
Calculate area for 12 plane shapes, including rectangles, circles, polygons, sectors, ellipses, kites, and annuli.
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Volume Calculator
Calculate volume for 12 common solids with shape-specific dimensions, formulas, and substitution steps.
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Derivative Calculator
Differentiate nine polynomial, power, trigonometric, exponential, logarithmic, radical, and reciprocal function families with evaluation steps.
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Integral Calculator
Find antiderivatives and definite integrals for nine polynomial, power, trigonometric, exponential, logarithmic, radical, reciprocal, and constant families.
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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 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.
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Asphalt Calculator
Estimate asphalt volume, tons, suggested order quantity, thickness scenarios, and optional material cost from length, width, thickness, density, and price.
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Concrete Calculator
Estimate concrete cubic feet, cubic yards, waste allowance, bag count, and optional cost with a clearly labeled design-strength reference for rectangular or round pours.
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Gravel Calculator
Estimate gravel area, cubic feet, cubic yards, tons, tons with waste, and optional material cost from project dimensions.
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Stone Calculator
Estimate cubic yards, tons, bags, coverage, and cost for common stone materials or a custom supplier density.
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Mulch Calculator
Estimate mulch cubic feet, cubic yards, bulk order quantity, bag counts, coverage, and optional bag or bulk cost.
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Cubic Yard Calculator
Estimate cubic yards or cubic metres, waste allowance, rounded orders, bags, tonnage, and optional material cost using imperial or metric inputs.
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Cubic Feet Calculator
Calculate cubic feet, cubic metres, litres, and other volume conversions from matching or mixed measurement units.
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Square Footage Calculator
Calculate square feet or square metres, waste allowance, quantity totals, package count, and optional cost for common area shapes.
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Board Feet Calculator
Calculate board feet and cubic metres, including waste and optional pricing, from imperial or metric timber dimensions.
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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.
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Paint Calculator
Estimate wall and ceiling paint, primer, whole containers, leftover paint, material cost, and labour from room dimensions, openings, coats, coverage, and waste.
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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.
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Flooring Calculator
Estimate laminate, vinyl plank, engineered wood, hardwood, bamboo, or cork flooring by room, box, plank, underlay, trim, transitions, and installed cost.
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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.
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Deck Calculator
Estimate deck boards, rows, waste, joists, rim boards, beams, posts, footings, concrete, fasteners, railing, stair materials, weight, delivery, labour, and cost.
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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.
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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.
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Stud Wall Calculator
Estimate on-centre studs, opening framing, corners, intersections, plates, blocking, headers, sheathing, fasteners, board feet, delivery, labour, and cost.
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Drywall Calculator
Estimate drywall sheets, net area, joint compound, tape, screws, and optional panel cost from room dimensions and sheet size.
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Stair Calculator
Estimate stair risers, treads, actual riser height, total run, stair angle, and stringer length from total rise and tread dimensions.
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Roof Pitch Calculator
Calculate roof pitch, slope percent, roof angle, rafter length, and rafter length with optional overhang from rise and run.
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Conduit Fill Calculator
Estimate conduit fill percentage, allowed fill area, and remaining area from conductor area, conductor count, and conduit internal area.
Open 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.
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IPv6 Subnet Calculator
Find an IPv6 network address, understand its /prefix, and see the complete subnet range. Advanced mode adds child-prefix and reverse-DNS planning.
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Dilution Calculator
Solve C₁V₁ = C₂V₂, calculate stock and diluent volumes, plan replicates and overage, check transfer rounding, or generate an auditable serial dilution table.
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Density Calculator
Calculate density, mass, or volume with automatic SI and imperial conversion, geometric volume options, material references, significant figures, and uncertainty estimates.
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Moles Calculator
Use two simple inputs to convert grams to moles, or switch to an advanced pathway for particles, solutions, gas states, and reverse calculations.
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Molarity Calculator
Choose one clear solution-chemistry pathway to calculate molarity, mass, volume, or moles with explicit mL-to-L conversion.
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Molecular Weight Calculator
Calculate molecular weight from a chemical formula and see every element's atom count, atomic weight, mass contribution, and percentage of the total.
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Unit Converter
Search categories and units, then convert common everyday, scientific, engineering, and digital measurements with transparent definitions and a complete equivalents table.
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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.
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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.
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Voltage Drop Calculator
Estimate voltage drop, voltage drop percentage, and voltage at load from current, wire length, conductor material, phase, and wire size.
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US LTL Freight Class Calculator
Estimate US LTL freight class from actual packaged density and optionally compare actual, dimensional, and chargeable weight.
Open calculatorHealth & Fitness
Estimate body composition, calorie needs, strength, and general health indicators with clear limitations and references.
BMI Calculator
Calculate adult BMI in metric or imperial units, compare international and South Asian screening ranges, and estimate a healthy weight range.
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FFMI Calculator
Estimate fat-free mass index, normalized FFMI, fat-free mass, and fat mass from height, weight, and body fat percentage.
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Strength Calculator
Estimate one-rep max from weight lifted, repetitions, unit, and common strength formulas.
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Calorie Calculator
Estimate BMR, daily maintenance calories, and general weight goal ranges using Mifflin-St Jeor.
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A1C Calculator
Convert A1C to estimated average glucose or estimated average glucose to A1C using the ADA/ADAG relationship.
Open calculatorEducation
Calculate Indian marks percentages, GPA, grade averages, final-exam requirements, and practice-score estimates for academic planning.
GPA Calculator
Calculate credit-weighted semester GPA or Indian 10-point SGPA from course grades, custom grade points, and credits.
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Cumulative GPA Calculator
Estimate cumulative GPA or Indian 10-point CGPA from prior results, completed credits, a new semester, and optional target planning.
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Grade Average Calculator
Calculate an unweighted or weighted grade average, letter estimate, GPA estimate, and target score needed on remaining coursework.
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Final Exam Calculator
Find the score needed on a final exam or predict the course grade from an expected exam score.
Open calculatorMarks Percentage Calculator
Calculate an Indian school, board, college, or university marks percentage across five or six equal-maximum subjects, with an optional best-five comparison.
Open calculatorNegative Marking Calculator
Estimate a competitive-exam raw score from correct and incorrect answers using no penalty, common fractional penalties, or a custom deduction.
Open 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.
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Working Dates Calculator
Count working days between dates or add and subtract working days while excluding weekends, India's nationwide compulsory holidays, and custom dates.
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Time Duration Calculator
Calculate elapsed time using 24-hour inputs or hour, minute, and AM/PM controls, including break minutes and overnight spans.
Open calculatorBusiness
Calculate pricing, discounts, ROI, margins, markup, and advertising campaign costs.
Discount Calculator
Calculate discounts, savings, and optional GST-inclusive or GST-exclusive checkout totals.
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ROI Calculator
Calculate simple ROI or analyze regularly spaced multi-period cash flows, cumulative recovery, and IRR.
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Profit Margin Calculator
Calculate profit, profit margin, markup, selling price from margin, and cost price from margin.
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Markup Calculator
Calculate markup, profit, margin, selling price from markup, and cost price from markup.
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CPM Calculator
Calculate CPM, campaign cost, impressions, cost per impression, and impressions per dollar for advertising campaigns.
Open calculatorTax
Estimate Indian GST, income tax, TDS, and capital gains with transparent assumptions and worked results.
GST Calculator
Add or remove GST in India using current-rate presets and show the applicable CGST plus SGST/UTGST or IGST invoice breakdown.
Open calculatorIncome Tax Calculator India
Estimate Indian income tax and compare the new and old regimes with deductions, rebate, surcharge, cess, and slab-wise steps.
Open calculatorTDS Calculator India
Estimate tax deducted at source for common resident payments using current Indian rates, thresholds, PAN treatment, and section references.
Open calculatorCapital Gains Tax Calculator India
Estimate Indian short- or long-term capital gains tax for equity, property and other assets, including equity exemption and property indexation comparison.
Open calculatorEveryday & Niche
Use practical and specialist calculators for tipping, brewing, gematria, and calendar-based interests.
Tip Calculator
Calculate a percentage or fixed tip, total bill, tax, and per-person split with optional rounding.
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ABV Calculator
Estimate alcohol by volume, alternate ABV, apparent attenuation, and gravity points from original and final gravity readings.
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Gematria Calculator
Calculate and compare English, Hebrew, and Jewish/Latin gematria values with word totals, letter breakdowns, and transparent input handling.
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Saturn Return Calculator
Estimate first, second, and third Saturn return timing from a birth date using Saturn's average orbital period.
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