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CalcLantern calculator directory

Calculations run in your browser. Choose a tool to see its method, example and limitations.

Home & Garden

Area & square footage Concrete volume Paint Calculator: Wall Area, Primer & Finish Containers Flooring Calculator: Room Areas, Allowance & Boxes Tile quantity Wallpaper rolls Drywall sheets Deck boards Fence materials Mulch Topsoil Compost Gravel & aggregate Raised Bed Soil Calculator: Full Fill, Top-Ups & Bags Plant spacing Grass seed Sod rolls Fertilizer coverage Paver quantity Board feet Sloped roof area Roof pitch & angle Siding panels Brick wall quantity Mortar bag yield Tile grout quantity Sealant cartridges Sloping-floor pool volume Elliptical pond with shelf Vertical cylinder tank fill Rainwater harvesting Irrigation run time Hose flow & fill time Garden path around a bed Circular bed edging Wall block quantity Gabion rock fill Greenhouse cover area Raised-bed board cut list Stacked firewood cords Tapered log volume Even board spacing Stair rise & run geometry Ramp slope geometry Driveway surface budget Lawn mowing time Solar output scenario

Finance

Mortgage payment Loan payment Compound interest Retirement savings Tax rate scenario Salary to hourly Profit margin & markup Currency conversion Inflation scenario Auto loan with trade-in Balloon loan maturity payment Loan payoff time Interest-only loan transition Refinance break-even Rent versus buy cash-cost scenario Home budget scenario Debt-to-income ratio Debt avalanche planner Monthly savings for a goal Time to a savings goal Emergency fund target Monthly budget balance Simple interest Effective annual rate Present value of a future amount Future value of annual deposits Bond current yield Fixed-coupon bond price Net present value Internal rate of return Return on investment Compound annual growth rate Rule of 72 doubling estimate Straight-line depreciation Declining-balance depreciation Break-even sales units Unit price comparison Sales tax at your rate Discounted price Sales commission Freelance hourly revenue target Inventory turnover Accounts receivable days

Health

Adult BMI Resting energy & TDEE Ovulation date estimate Pregnancy due date estimate Running pace from a completed run Race finish time at a target pace Even split-time planner Cycling cadence and gear speed Walking distance from steps One-repetition maximum estimate

Math

Percentage Quadratic graph Scientific calculator Ratio simplifier GCF & LCM Number-base converter Fraction arithmetic Grades & final exam target Linear equation solver Polynomial calculus Quadratic roots Polynomial evaluation Two-equation system Linear inequality Absolute-value equation Arithmetic sequence term Geometric sequence term Arithmetic series sum Geometric series sum Fibonacci number Factorial Permutations Combinations Percent error Percentage difference Scientific notation Significant-figure rounding Logarithmic equation Exponential growth & decay Real nth root Complex arithmetic 2×2 matrix multiplication 2×2 matrix inverse 3×3 determinant Vector dot product Vector cross product 2D distance Midpoint Line through two points 3D distance Right triangle Triangle from three sides Triangle from two sides & angle Circle Ellipse Trapezoid Regular polygon Sphere Cylinder Cone Rectangular prism Pyramid volume Cone frustum

Statistics

Binomial probability Poisson probability Normal interval probability Z-score Mean confidence interval Proportion sample size Mean, median & mode Standard deviation Sample covariance Pearson correlation Linear regression prediction Weighted average Geometric mean Harmonic mean Root mean square Interquartile range Percentile rank

Conversions

Temperature conversion Volume conversion Area conversion Speed conversion Pressure conversion Energy conversion Power conversion Digital storage conversion