OnlineCalculator360
Date & Time Calculators
Age Calculator
Calculate exact age in years, months, and days.
Open →Age Comparison Calculator
Compare ages of two people, cars, homes, appliances, or any items. See exact age gap in years, months, and days.
Open →Date Difference Calculator
Find exact difference between two dates.
Open →Time Duration Calculator
Calculate time difference between two times.
Open →Work Experience Calculator
Compute total work experience across jobs.
Open →Roman Numeral Converter
Convert any number (1–3999) to Roman numerals or Roman numerals back to standard numbers instantly, with step-by-step breakdown.
Open →Speed Distance Time Calculator
Solve for speed, distance, or time. Enter any two values to calculate the third. Supports km/h, mph, m/s and km, miles, meters.
Open →Time Card Calculator
Track daily work hours, breaks, and overnight shifts across a 5/6/7-day week. Calculates total hours, overtime, and weekly pay with regular and OT split.
Open →Finance Calculators
EMI Calculator
Monthly EMI, total interest, and repayment.
Open →Home Loan Part-Payment Calculator
Check EMI cut, tenure cut, and interest saved.
Open →Pre-EMI vs Full EMI Calculator
Compare pre-EMI and full EMI total cost.
Open →Personal Loan EMI Calculator
Estimate personal loan EMI quickly.
Open →Home Loan EMI Calculator
Plan home loan costs and EMIs.
Open →Car Loan EMI Calculator
Check car loan EMI and payout.
Open →Simple Interest Calculator
Compute simple interest and maturity amount.
Open →Compound Interest Calculator
Estimate compound growth and returns.
Open →SIP Calculator
Project SIP investment value and gains.
Open →SWP Calculator
Calculate how long your corpus lasts with systematic monthly withdrawals and expected returns.
Open →FD Calculator
Estimate fixed deposit maturity value.
Open →GST Calculator
Add or remove GST instantly.
Open →Percentage Calculator
Percentage and percentage-change calculations.
Open →Discount Calculator
Find sale price, amount saved, and discount percentage instantly.
Open →CAGR Calculator
Calculate compound annual growth rate from initial value, final value, and years.
Open →PPF Calculator
Calculate Public Provident Fund maturity amount, total interest, and yearly breakdown.
Open →Tip Calculator
Calculate tip amount, total bill, and split per person for any group size.
Open →Lumpsum vs SIP Calculator
Compare one-time lumpsum investment returns against monthly SIP returns over the same period to find which strategy builds more wealth.
Open →NPS Calculator
Estimate your National Pension System corpus at retirement, lump sum withdrawal, and monthly pension based on contributions and expected returns.
Open →RD Calculator
Calculate recurring deposit maturity amount and total interest earned with quarterly compounding.
Open →Break-Even Point Calculator
Calculate BEP in units and revenue from fixed cost, variable cost, and selling price.
Open →Mortgage Calculator
Estimate monthly mortgage payment, total interest, amortization schedule, and payoff date.
Open →Savings Calculator
Estimate future savings value based on initial deposit, monthly contributions, interest rate, and compounding frequency.
Open →Retirement Savings Calculator
Project retirement corpus based on current savings, monthly contributions, expected return, and inflation. Includes readiness assessment and year-by-year breakdown.
Open →Profit Margin Calculator
Calculate profit, margin %, and markup % from cost and selling price. Find selling price from target margin or markup. Supports quantity for total profit.
Open →Sales Tax Calculator
Add sales tax to any price or remove tax from a total instantly. Supports custom rates, quantity, and pre-tax discounts.
Open →Stock Average Calculator
Calculate weighted average buy price across multiple stock purchases with different prices and quantities.
Open →Salary & Tax Calculators
CTC Hike Calculator
Estimate revised annual and monthly CTC.
Open →Hike Impact Over Years Calculator
Project salary growth with annual hikes over multiple years.
Open →Salary In-Hand Calculator
Approximate monthly take-home from CTC.
Open →HRA Calculator
Estimate exempt and taxable HRA.
Open →Gratuity Calculator
Estimate gratuity amount by tenure and salary.
Open →Income Tax Calculator
Indicative annual income tax estimate.
Open →Health Calculators
Water Intake Calculator
Find your daily water requirement in litres and glasses based on weight, activity level, and climate.
Open →Ideal Weight Calculator
Find your healthy weight range by height and gender using BMI, Devine, Robinson, Miller, and Hamwi formulas.
Open →Next Period Calculator
Predict your next menstrual period date, fertile window, and upcoming 6 periods based on last period date and average cycle length.
Open →Blood Sugar to A1C Calculator
Enter your average blood glucose in mg/dL or mmol/L to get the estimated A1C percentage. Covers all clinical ranges with category and interpretation.
Open →A1C to Blood Sugar Calculator
Turn your A1C into estimated average glucose in mg/dL or mmol/L. See the 2 to 3 month picture behind your HbA1c and check your range now.
Open →Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method from neck, waist, and hip measurements. Shows fat mass, lean mass, and body fat category.
Open →BMI Calculator
Check BMI score and category.
Open →Calorie Calculator
Estimate daily calorie needs (TDEE).
Open →Ovulation Calculator
Estimate fertile window and ovulation date.
Open →Pregnancy Due Date Calculator
Estimate due date, gestational age, and trimester from LMP, conception date, or IVF transfer.
Open →BMR Calculator
Calculate basal metabolic rate and TDEE using Mifflin-St Jeor or Harris-Benedict formula.
Open →Steps in a Mile Calculator
Estimate how many steps are in a mile based on your height using stride-to-height ratio.
Open →Kilojoules to Calories Converter
Convert kilojoules (kJ) to kilocalories (kcal) using kcal = kJ ÷ 4.184.
Open →Miles to Steps Calculator
Convert miles to steps based on your height or stride length.
Open →Steps to Calories Calculator
Calculate calories burned from steps using weight, pace, and stride length.
Open →Steps to Km Calculator
Convert steps to kilometres and miles using height-based stride estimation.
Open →Sobriety Calculator
Calculate how long you have been sober with live counter and milestone tracker.
Open →WHR Calculator
Calculate waist-to-hip ratio and health risk category using WHO thresholds.
Open →Travel Calculators
Budget Calculators
Length & Distance Converters
Centimeters to Feet and Inches Converter
Convert centimeters to feet and inches instantly. Ideal for height conversions.
Open →Centimeters to Inches Converter
Convert centimeters to inches with precision. Quick cm to in conversion.
Open →Inches to Centimeters Converter
Convert inches to centimeters instantly.
Open →Inches to Feet Converter
Convert inches to feet and decimal feet quickly.
Open →Feet to Inches Converter
Convert feet to inches instantly.
Open →Feet to Meters Converter
Convert feet to meters for construction, science, and everyday use.
Open →Meters to Feet and Inches Converter
Convert meters to feet and inches. Perfect for height conversions from metric to imperial.
Open →Meters to Inches Converter
Convert meters to inches accurately.
Open →Meters to Yards Converter
Convert meters to yards for sports, fabric, and landscaping measurements.
Open →Yards to Feet Converter
Convert yards to feet for construction, sports, and daily measurements.
Open →Yards to Meters Converter
Convert yards to meters for metric conversions.
Open →Inches to Millimeters Converter
Convert inches to millimeters for precision engineering and manufacturing.
Open →Millimeters to Inches Converter
Convert millimeters to inches for precision measurements.
Open →Inches to Yards Converter
Convert inches to yards for fabric, landscaping, and field measurements.
Open →Kilometers to Miles Converter
Convert kilometers to miles for driving, running, and travel distances.
Open →Miles to Kilometers Converter
Convert miles to kilometers for international travel and distance conversions.
Open →Miles to Feet Converter
Convert miles to feet for precise distance calculations.
Open →Miles to Meters Converter
Convert miles to meters for science, sports, and metric conversions.
Open →Sports Calculators
Net Run Rate Calculator
Calculate cricket NRR for a single match, track tournament NRR across matches, and find the exact win margin or chase overs needed to qualify.
Open →Pigeon Speed & Velocity Calculator
Calculate pigeon racing velocity from release distance and arrival time. Outputs in yards/min, m/min, km/h, and mph.
Open →Garden Calculators
Raised Bed Soil Calculator
Calculate how much soil, compost, and bags you need to fill a raised garden bed.
Open →Mulch Calculator
Calculate how much mulch you need for garden beds, borders, and tree rings in bags, cubic feet, and cubic yards.
Open →Potting Soil Calculator
Calculate how much potting mix you need for pots, planters, window boxes, and grow bags in litres, cubic feet, and bag counts.
Open →Plant Spacing Calculator
Calculate how many plants fit in a garden bed, raised bed, single row, or circular container based on plant spacing.
Open →Compost Calculator
Calculate how much compost you need for top-dressing, soil mixing, raised beds, containers, and top-ups in litres, cubic feet, and bag counts.
Open →Lawn Seed Calculator
Calculate how much grass seed you need for a new lawn, overseeding, patch repair, or lawn renovation. Get results in pounds, kilograms, and bag counts.
Open →Math Calculators
Percent Decrease Calculator
Calculate the percentage decrease between two numbers instantly. Enter the original and new value to find the exact percentage drop and absolute change.
Open →Percent Increase Calculator
Calculate the percentage increase between two numbers instantly. Enter the original and new value to find the exact percentage growth and absolute change.
Open →Percentage Difference Between Two Numbers
Find the percentage difference between two values using their average as the base. Ideal for symmetric comparisons with no fixed reference point.
Open →Percentage to Fraction Converter
Convert any percentage to a simplified fraction instantly. Get the reduced fraction and decimal equivalent with step-by-step working shown.
Open →Fraction to Percentage Converter
Convert any fraction to a percentage in seconds. Enter the numerator and denominator to get the exact percentage and decimal value with formula.
Open →Percentage to Decimal Converter
Convert any percentage to its decimal form instantly. Useful for formulas, spreadsheets, and programming. Shows fraction over 100 and full working.
Open →Percent Error Calculator
Calculate percentage error between an approximate and exact value. See error percentage, absolute difference, and whether the result is an over- or underestimate.
Open →Sale Price & Discount Calculator
Find the final price after any percentage discount. Enter the original price and discount to see the sale price and amount saved instantly.
Open →Percentage of a Percentage Calculator
Calculate a percentage of a percentage — like 30% of 40%. Useful for nested discounts, tax-on-tax calculations, and probability. Shows full formula.
Open →Rectangle Area Calculator
Calculate the area of any rectangle instantly. Enter length and width in any unit to get the exact area with the formula shown.
Open →Rectangle Diagonal Calculator
Calculate the diagonal of any rectangle using the Pythagorean theorem. Also shows area and perimeter. Works for rooms, screens, and plots.
Open →Rectangle Area, Perimeter & Diagonal
Find area, perimeter, and diagonal of any rectangle in one step. Enter length and width and get all three measurements with formulas shown.
Open →Circle Area Calculator
Calculate the area of a circle from its radius using πr². Also shows circumference. Useful for circular plots, pools, and round surfaces.
Open →Circle Circumference & Area Calculator
Enter the radius to get area, circumference, and diameter of any circle — all in one calculation with formulas shown.
Open →Box Volume & Surface Area Calculator
Find volume, surface area, and space diagonal of a cuboid from length, width, and height. Useful for boxes, rooms, and storage spaces.
Open →Cylinder Volume & Capacity Calculator
Calculate cylinder volume, lateral surface area, and total surface area from radius and height. Ideal for water tanks, pipes, and cans.
Open →Sphere Volume & Surface Area Calculator
Calculate the volume and surface area of a sphere from its radius. Works for balls, tanks, domes, and any spherical object.
Open →Cube Root Finder
Find the cube root of any positive or negative number instantly. Also shows the square root and fourth root. Works for all real numbers including negatives.
Open →Mean, Median & Mode Calculator
Calculate the average of any list of numbers instantly. Paste comma or newline-separated values to get the mean, median, sum, count, min, and max in one click.
Open →Decimal to Fraction Converter
Convert any decimal to a simplified fraction instantly. Enter a decimal like 0.75 and get the reduced fraction, mixed number, and percentage equivalent with formula shown.
Open →Weighted Average of Percentages Calculator
Calculate the average of multiple percentages instantly. Enter percentage values separated by commas to get the mean, sum, min, and max — useful for exam scores, surveys, and rates.
Open →Quadratic Equation Solver
Solve any quadratic equation ax² + bx + c = 0 instantly. Enter a, b, and c to get both roots, the discriminant, and the nature of roots — real or complex.
Open →Average Rate of Change Calculator
Calculate rate of change (slope) between two points. Enter x₁, y₁, x₂, y₂ to get the rate, direction, absolute change, and percentage change instantly.
Open →Physics Calculators
Speed Calculator — Distance ÷ Time
Calculate speed from distance and time instantly. Outputs in m/s, km/h, mph, and ft/s. Works for any object in motion.
Open →Velocity Calculator — Speed with Direction
Calculate velocity from displacement and time. Understand the difference between speed and velocity with directional results.
Open →Displacement Calculator — Kinematics
Calculate displacement using d = vt or the kinematic equation d = v₀t + ½at². Handles uniform and accelerated motion.
Open →Force Calculator — Newton's Second Law
Calculate force using F = ma. Enter mass and acceleration to get force in Newtons, kgf, and lbf instantly.
Open →Net Force Calculator — Sum of Forces
Calculate the net force on an object by summing multiple directional forces. Shows resultant force and direction.
Open →Density Calculator — Mass per Volume
Calculate density from mass and volume using ρ = m/V. Outputs in g/cm³, kg/m³, and lb/ft³. Solve for mass or volume too.
Open →Kinetic Energy Calculator — ½mv²
Calculate kinetic energy using KE = ½mv². Enter mass and velocity to get energy in Joules, kJ, calories, and kWh.
Open →Gravitational PE Calculator — mgh
Calculate gravitational potential energy using GPE = mgh. Enter mass, height, and gravity to get energy in Joules and kJ.
Open →Work & Energy Calculator (Joules)
Calculate work and energy in Joules using W = F × d. Convert between Joules, kJ, calories, and kWh instantly.
Open →Capacitor Energy Calculator — ½CV²
Calculate energy stored in a capacitor using E = ½CV². Enter capacitance and voltage for results in Joules, mJ, and µJ.
Open →Miles Per Hour Speed Calculator
Calculate speed in miles per hour from distance and time. Also converts mph to km/h, m/s, and ft/s instantly.
Open →Inches Per Second Speed Converter
Convert speed to and from inches per second. Supports m/s, km/h, mph, ft/s, and in/s with instant bidirectional conversion.
Open →PSF to PSI Pressure Converter
Convert pressure from pounds per square foot (PSF) to pounds per square inch (PSI) and other units. PSI = PSF ÷ 144.
Open →mg/mL Concentration Calculator
Calculate concentration in mg/mL from mass and volume. Also outputs g/L and % w/v. Used in pharmacy, chemistry, and nutrition.
Open →Construction Calculators
Concrete Volume Calculator
Calculate concrete volume for slab, footing, column, beam, or staircase in cubic metres and cubic feet. Enter dimensions and get instant results.
Open →Cement, Sand & Aggregate Calculator
Calculate cement bags, sand, and aggregate quantities for M10, M15, M20, M25, and M30 concrete mixes. Dry volume and material breakdown included.
Open →Brick Calculator
Calculate number of bricks, mortar quantity, and cement and sand for any wall area. Supports standard, modular, and custom brick sizes with wastage factor.
Open →AAC Block Calculator
Calculate number of AAC blocks, mortar, and cement needed for any wall with adjustable block size and wastage percentage.
Open →Plaster Calculator
Calculate cement and sand needed for plastering based on wall area, plaster thickness, and mix ratio. Supports 12mm and 20mm plaster coats.
Open →Tile Calculator
Calculate tile quantity, boxes needed, adhesive, and wastage for floor or wall tiling. Enter room area and tile size with custom wastage percentage.
Open →Paint Calculator
Calculate litres of paint needed from surface area, number of coats, and coverage rate. Supports wall, ceiling, and total room painting estimates.
Open →Roofing Sheet Calculator
Calculate number of roofing sheets, coverage area, and overlap for corrugated or profile metal roofing. Supports custom sheet sizes and side/end lap.
Open →Paver Block Calculator
Calculate the number of paver blocks needed for a driveway or patio from area and block dimensions, with adjustable wastage percentage.
Open →Flooring Cost Calculator
Calculate total flooring cost from area, material rate per sq ft or sq m, labour cost, and wastage percentage. Works for tiles, marble, wood, and vinyl.
Open →Steel Weight Calculator
Calculate the weight of TMT rebar or mild steel bars by diameter and length using the standard D²/162 formula. Supports 6mm to 40mm bar diameters.
Open →Rebar Quantity Calculator
Calculate number of rebar bars, total length, and weight for slab, beam, column, or footing reinforcement based on dimensions and spacing.
Open →Excavation Calculator
Calculate excavation volume in cubic metres and cubic feet for trenches, pits, and foundation cuts. Supports rectangular, trapezoidal, and circular cross-sections.
Open →Stair Calculator
Calculate riser height, tread depth, stair angle, total run, and number of steps from floor-to-floor height. Shows whether dimensions meet standard building codes.
Open →Construction Cost Calculator
Estimate total construction cost from built-up area and cost per square foot or square metre. Add separate rates for structure, finishing, and labour.
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