Solve complex math instantly with our free, professional-grade tools.
Calculate your exact age in years, months, and days. Includes total weeks, next birthday countdown, and zodiac sign.
Calculate image dimensions, resize content for social media (16:9, 9:16, 4:5), and find missing width or height.
Calculate your true monthly payment including taxes, dealer fees, and trade-in equity (even if you owe money on your old car).
Calculate Body Mass Index (BMI), Body Fat percentage, and ideal weight range.
Calculate your Body Fat Percentage with military-grade accuracy. Provides detailed analysis of Lean Mass vs. Fat Mass and health categorization.
Calculate the break-even point, margin of safety, and sales volume needed to hit your target profit. Supports unit-based and revenue-based models.
Calculate the perfect cooling or heating capacity (BTUs) for your room based on size, insulation, and sun exposure.
Calculate your optimal daily calorie intake and macronutrient split (Protein, Carbs, Fats) to lose, maintain, or gain weight.
Project your investment growth with precision. Adjustable contribution frequencies, compounding intervals, inflation, and tax impacts.
Calculate concrete volume, bags needed, and bulk material breakdown for slabs, footings, and tubes. Includes rebar estimation.
Calculate Cost Per Mille (CPM), project impressions, and estimate full-funnel metrics like CPC, CPA, and ROAS for media planning.
Create a debt-free plan. Handles balance transfers (0% promo rates), variable strategies, and compares your plan against the minimum payment trap.
Calculate the duration between two dates, or add/subtract days, weeks, and months to find a deadline.
Bypass preview pages. Instantly convert Google Drive, Dropbox, and OneDrive share links into direct download URLs.
Calculate drywall sheets, screws, tape, and compound needed for any room. Supports multiple board sizes (4x8, 4x12) and ceiling exclusion.
Calculate true ROI by factoring in ESP costs, creative labor, and the hidden cost of unsubscribes (List Churn).
Predict your baby's eye color using the scientific Two-Gene genetic model. Analyze probability based on parents and grandparents.
Calculate tiles, planks, or laminates needed for any room. detailed box counts, waste analysis, and price breakdown.
Calculate the perfect hourly rate based on your target net income, billable efficiency, business expenses, and taxes.
Calculate your semester GPA and simulate how it affects your overall cumulative GPA.
Smart hosting comparison. Enter your resource requirements, and we'll find the cheapest matching plans on AWS and DigitalOcean, including hidden bandwidth and storage costs.
Calculate your ideal body weight using 4 medical standards (Robinson, Miller, Devine, Hamwi) and the Healthy BMI range.
Calculate the future cost of goods or the erosion of your purchasing power over time. Visualize how inflation eats away at savings.
Calculate how your savings and investments grow over time with the power of compound interest.
Calculate the true long-term value of a customer. Supports Retention-based, Margin-adjusted, and Discounted Cash Flow (DCF) models.
Calculate decking boards, joists, and fasteners. Supports diagonal patterns, board gaps, and substructure spacing.
Calculate your Total Daily Energy Expenditure (TDEE) and get a personalized meal plan for weight loss or muscle gain.
Calculate selling price, cost, or profit margin. Includes sales tax/VAT adjustments and discount safety analysis.
Calculate your monthly payment, analyze extra payments, and generate PDF reports.
Calculate cubic yards and bags for gardens. Supports multiple shapes (beds, tree rings) and estimates weight for bulk transport.
Calculate your true max using 7 different scientific formulas. Includes percentage-based training zones and Wilks Score analysis.
Pinpoint your exact fertile window. Features customizable Luteal Phase settings and gender-timing theories (Shettles Method).
Calculate exact paint needs for walls, ceilings, and trim. Accounts for windows, doors, surface texture, and multiple coats.
Calculate processing fees for PayPal, Stripe, and Square. Features 'Reverse Calculation' to ensure you receive the exact net amount.
Calculate percentages, percentage difference, percentage change, and find variables.
Convert your dog or cat's age into human years using veterinarian-approved formulas based on breed size.
Analyze display sharpness. Calculate Pixel Density (PPI), Dot Pitch, physical screen dimensions, and the ideal 'Retina' viewing distance.
Calculate your due date with precision using Last Period, Conception Date, or IVF Transfer. Includes a complete prenatal milestone timeline.
A comprehensive analysis of homeownership vs. renting. Accounts for opportunity cost, stock market returns, home appreciation, and selling fees.
Project your 401k/IRA growth with precision. Includes salary raises, complex employer matching logic, and inflation-adjusted retirement income estimates.
Calculate true Return on Ad Spend (ROAS). Features break-even analysis, agency fee deductions, and Lifetime Value (LTV) projections.
Calculate your true Annualized Return (CAGR) and Total ROI. Accounts for expense ratios, inflation adjustments, taxes, and regular contributions.
Calculate bundles, squares, and accessories. Accounts for roof pitch, overhangs, and complexity.
Analyze Logo Churn vs. Revenue Churn (MRR). Calculates Net Negative Churn, LTV, and your business's mathematical Growth Ceiling.
Calculate your true 'Take Home' pay by factoring in taxes, overtime, bonuses, and monthly deductions.
Calculate true engagement rates (ERR, ER, Impressions). Features weighted scoring for high-value actions (Shares/Saves) and industry benchmarking.
Calculate rise, run, and stringer length with safety code checks. Includes Blondel's ergonomic analysis and headroom clearance.
Compare your current loans against refinance offers. Analyzes monthly savings vs. total lifetime costs to prevent extending debt unnecessarily.
Professional-grade estimator using the 'Strip Method'. Accounts for pattern repeats, matching waste, and specific roll dimensions.
Calculate your precise daily hydration needs based on weight, activity, climate, and diet. Includes a smart drinking schedule.