All Calculators
Browse our comprehensive collection of free online calculators. Find the perfect tool for your calculation needs.
Calculator Categories
Health & Medical
Health, fitness and medical calculation tools
Math & Science
Mathematical and scientific calculations
Finance & Investment
Financial planning and investment tools
Daily Life Tools
Everyday calculations and utilities
Unit Converters
Convert between different units and currencies
Business & Professional
Professional business calculation tools
Health & Medical
Steps to Calories Calculator
Convert steps to calories burned based on your weight and walking pace. Calculate how many calories you burn from daily steps, distance covered, and exercise duration.
Lean Body Mass Calculator
Calculate lean body mass (LBM) using Boer formula or body fat percentage. Enter weight, height, and optional body fat to get muscle mass and fat distribution.
Mean Arterial Pressure Calculator
Calculate Mean Arterial Pressure (MAP) from blood pressure readings. Assess organ perfusion status and cardiovascular health with clinical reference ranges.
Intermittent Fasting Calculator
Calculate intermittent fasting schedule. Choose 16:8, 18:6, OMAD protocol. Get eating window, meal plan, calorie distribution, and water intake recommendations.
Math & Science
Cross Product Calculator
Calculate cross product of two 3D vectors. Enter i, j, k components to find perpendicular vector, magnitude, direction, and unit vector with detailed steps.
Factoring Trinomials Calculator
Factor trinomials axยฒ + bx + c instantly. Enter coefficients to get factored form, step-by-step solutions, and verify results with detailed explanations.
Fourier Transform Calculator
Analyze signals with FFT: set sampling rate and length, choose window and zeroโpadding, then view magnitude and phase spectra with peak markers.
Least Common Multiple Calculator
Compute the least common multiple (LCM) of 2โ10 positive integers. Enter values, get step-by-step method using GCD or prime factors, and share deep links to preset inputs.
Finance & Investment
Net Worth Calculator
Calculate your net worth by entering assets and liabilities. Track financial health with detailed breakdown of cash, investments, real estate, debts, and loans.
Lease vs Buy Car Calculator
Compare leasing vs buying a car. Calculate total costs, monthly payments, and long-term value. Make informed auto financing decisions with side-by-side analysis.
EBITDA Margin Calculator
Calculate EBITDA margin to measure operating profitability. Enter revenue and EBITDA to get your margin percentage and financial performance insights.
Dollar Cost Averaging Calculator
Calculate dollar cost averaging strategy results. Enter amount, frequency, and periods to see average cost, total shares, return, and ROI analysis.
Daily Life Tools
Wallpaper Calculator
Calculate wallpaper rolls needed. Enter room size, roll dimensions, and pattern repeat to get accurate coverage, waste calculation, and purchasing guide.
Grass Seed Calculator
Calculate grass seed needed for your lawn. Enter area size and grass type to get seeding rates, bag quantities, and cost estimates for new lawns or overseeding.
Quilt Backing Calculator
Calculate quilt backing fabric requirements instantly. Get yardage needed, seam orientation, panel cutting instructions, and cost estimates for 42", 45", or 108" wide backing fabric.
Soap Making Calculator
Calculate lye and water amounts for soap making. Enter your oils, superfat percentage, and get precise NaOH/KOH measurements for perfect handmade soap recipes.
Unit Converters
Convert Liters to Pounds
Convert liters to pounds with density-based precision. Critical for US freight pricing, logistics planning, and international shipping weight calculations.
Convert Liters to Oz
Transform liters to fluid ounces (oz) with dual US/Imperial system support. Essential for bartending, cocktail recipes, and beverage measurements.
Convert Liters to Grams
Transform liters to grams using substance density. Essential for chemistry, cooking, and scientific calculations with precise results.
Convert Liters to Cups
Master recipe conversions across US, Metric, and Imperial cup systems. Essential for professional baking, international cooking, and precise culinary measurements.
Business & Professional
Employee Turnover Calculator
Calculate employee turnover rate, analyze costs, and compare to industry benchmarks. Get actionable insights to reduce turnover and improve retention.
Customer Lifetime Value Calculator
Calculate Customer Lifetime Value (LTV). Compare LTV/CAC ratio, analyze customer profitability, and optimize retention for sustainable growth.
Customer Acquisition Cost Calculator
Calculate CAC (Customer Acquisition Cost) and LTV/CAC ratio. Analyze marketing spend efficiency, compare to industry benchmarks, and optimize unit economics.
Operating Leverage Calculator
Calculate degree of operating leverage (DOL). Analyze how sales changes affect EBIT, measure fixed vs variable costs, and assess profit volatility risk.